HP NAS VA User’s Guide October 16, 2001 1
Table of Contents TABLE OF CONTENTS ..................................................................................................2 LEGAL INFORMATION .................................................................................................7 Acknowledgments..............................................................................................................................................7 Software License Agreement.........................................................................
Using Help While You Work ...........................................................................................................................22 Printing Help Information ................................................................................................................................23 HP NAS WEB INTERFACE ..........................................................................................24 Identifying the HP NAS VA...............................................................
Action menu picks...................................................................................................................................41 Managing Local File Systems ..........................................................................................................................41 Action menu picks.......................................................................................................................................41 Command View SDM (Storage Device Manager) ...........
Viewing HP Support Documentation on the Web ...........................................................................................60 HP NAS VA Service and Support....................................................................................................................60 HP NAS VA Support Web Site...................................................................................................................60 Contacting Customer Support by Phone..............................................
Figure 3: RAID 5DP........................................................................................................................................77 RAID 1+0 and RAID 5DP Combined (AutoRAID)...............................................................................77 TROUBLESHOOTING ..................................................................................................78 General Issues....................................................................................................
Legal Information Acknowledgments Outline Java Applet licensed from Byte-Sized Computing (http://www.Byte-Sized.com). Software License Agreement IMPORTANT - READ CAREFULLY BEFORE USING THIS PRODUCT. THIS AGREEMENT APPLIES ONLY TO HEWLETT-PACKARD PROPRIETARY SOFTWARE AND THIRD PARTY SOFTWARE NOT SPECIFICALLY IDENITIFIED AS BEING LICENSED UNDER A SEPARATE AGREEMENT. SOME LICENSE AGREEMENTS FOR THIRD PARTY SOFTWARE MAY BE PROVIDED IN THE SOFTWARE ITSELF.
lease the Software, or directly or indirectly permit a third party to use or copy the Software. o Software Transfer: You may permanently transfer your rights under this Agreement, provided you (i) retain no copies; (ii) transfer all of the Software (including all components, the media, all printed materials, any upgrades, and this Agreement); and (iii) provide Hewlett-Packard with written notice of the transfer within ten (10) days. Any other assignment by you of this agreement shall be void.
SOFTWARE OR RELATED DOCUMENTATION IN TERMS OF THEIR CORRECTNESS, ACCURACY, RELIABILITY, OR OTHERWISE. NO ORAL OR WRITTEN INFORMATION OR ADVICE GIVEN BY HEWLETT-PACKARD OR A HEWLETT-PACKARD AUTHORIZED REPRESENTATIVE SHALL CREATE A WARRANTY OR IN ANY WAY INCREASE THE SCOPE OF THIS WARRANTY.
HP NAS VA Warranty Information Planning for Support Step 1 - Retain your Proof-of-Purchase Support of your HP NAS VA solution is based on length of ownership. Please retain your original proof-of-purchase (sales receipts). You may need this information should you have to contact HP for post sales support. If you do not have a copy of your proof-of-purchase, please contact your internal purchasing department.
Step 2 - Placing Part Orders To order service parts after your warranty has expired, please contact the appropriate HP Customer Care Parts Ordering center in your region, during the hours specified below. Region Canada Telephone Number Hours of Operation 800-387-3154 or M-F, 8:30am-5pm ET 905-206-4747 United States 800-227-8164 M-F, 6am-5pm PT Hewlett-Packard Limited Warranty Statement 1.
2. 3. 4. 5. 6. 12 This Limited Warranty does not apply to defects resulting from (a) improper or inadequate maintenance or calibration, (b) software, interfacing, parts, or supplies not supplied by HP, (c) unauthorized modification or misuse, (d) operation outside of the published environmental specifications for the product, (e) acts of God, or (f) improper site preparation or maintenance. HP does not warrant that the operation of HP products will be uninterrupted or error free.
HP NAS VA Overview The HP Surestore Network Attached Storage (NAS) VA solution stores data on your network. NAS solutions provide a simpler, more reliable, and cost-effective way to add storage to your network. The HP NAS VA solution consists of: o A file server o One or more storage arrays o Tape library (optional) o A rack The HP NAS VA solution offers the following features: o An operating system optimized for storage and file serving. o The NAS web interface for device management. o Context-sensitive .
hard disks, depending on your storage needs. Drive capacities may be mixed. If drive speeds are mixed, system performance will approximate the lowest speed drive in use. Virtual Array Your HP Virtual Array is preconfigured for you at installation by the HP Customer Engineer. Administrators with a strong working knowledge in HP -UX administration and the Logical Volume Manager can make changes through the Command View SDM.
Snapshots A snapshot is a read-only picture of a logical volume at a specific point in time that provides almost instantaneous access to the previous version of a file. Planning Your Storage You need to construct an overall storage architecture showing the amount of total storage available and how it should be allocated to different groups or functions. Storage space is spread across volume groups. In these volume groups, you must create logical volumes to divide your disk space.
Use this table to help you plan your storage system. 1. Look up the total available storage space Total available system storage _____ GB Take the figure from in the Unallocated Column the Storage Array Summary of the NAS web interface. See the Using the NAS Web Interface section of this manual. 2. Calculate space for creating LUNs Space for LUNs LUN 1 _____ GB Recommended configuration: Use the full LUN 2 _____ GB amount of space available on the array in LUN 3 _____ GB 1 LUN. and so forth 3.
Using the HP NAS VA Getting Started - Part 1 This section is a summary of how to get started with your HP NAS VA Storage system. For more details please see the following sections of this manual: o Planning Your Storage o Getting Started - Part 2 Recommendation Use Quick Setup if you want up to 256 GB of storage configured quickly on your VA 7100, 512 GB on your VA 7400. Quick Setup will create a single Volume Group and a single LUN on the VA 7100, one Volume Group with 2 LUNs on your VA7400.
NAS VA Storage Configuration Tools Command View NAS GUI Command Line Create LUNs (devices) Manage LUNs (devices) Create VGs Manage VGs Create LVs Manage LVs Create exports/shares Manage exports/shares Command View NAS GUI Command Line Quick Advanced Command SAM Command LVM Setup Setup View SDM View (console) X X X X X X X X X X X X X X X X X X X X X X X Command View NAS (under the Storage Tab) Quick Setup (QS) - is intended to be the shortest path to configure up to 256/512 GB of storage.
up to) Logical Volumes. Please refer to your UX documentation for instructions regarding all of the various LVM commands, parameters and their correct usage. Items to be aware of: Volume Group Creation o o QS is the fastest way to create usable storage for NAS VA. It provides one Volume Group of up to 256 GB and a single LUN of up to 256 GB for you on VA71000, and one Volume Group of up to 512 GB with up to 2 LUNs of 256GB each on the VA7400 array.
Plan your storage. Review the Planning your Storage section of this manual under: HP NAS VA Planning Your Storage o Set up your storage system. o The first time your HP NAS VA solution is booted up, it will not recognize that any storage arrays are attached. To make your solution recognize the attached arrays: 1. Go to the Storage tab. 2. Navigate the logic tree to Quick Setup and select RAID Devices. 3. No RAID devices are listed in the RAID Device Summary.
o o o o o o You are then asked if you want to specify NIS. If yes, then you will enter the domain name Next you set the NIS server name or IP address Finally, you are asked to verify the domain name and NIS server name or IP address.. When done, you will need to reboot your system. Upon rebooting, the system will be manageable from the NAS web interface where you can setup and configure your solution's additional parameters.
3. Click the tabs at the top of the page to perform the following tasks: o Identity: View general system information o Status: View overall health of hardware and environmental components on the NAS head and the overall health of any attached storage array o Storage: View and manage your storage here. The Quick Setup section allows you to initially configure up to 1 TB of storage and 1 LUN. The Advanced Setup section must be used for all subsequent storage configuration.
1. Click the ? button for on-line help in the upper right corner of the web interface window. A separate help window displays the topic pertaining to the screen you are viewing. 2. Review the information and close the window, or leave help running in the background by minimizing the screen. When viewing help, you can maximize the window or resize it with the buttons in the upper-right corner.
HP NAS Web Interface Identifying the HP NAS VA The Identity Tab The Identity tab displays the following general system information: o *System Hostname —The UNIX hostname for your HP NAS VA system o Description—HP NAS VA o Manufacturer—Hewlett-Packard Company o Product Number—The product number corresponding to the original configuration of the HP NAS VA o CPUs—Quantity of CPUs in the NAS server head o CPU Speed—Clock speed of CPUs in NAS server head o Memory—Amount of physical memory in NAS head, a portion
Configuring Your System and Network The Configuration Tab You can navigate within the System Configuration tree to set up: o System Properties: You can specify the system name, administrative password,and date and time in the administration of your system within the NAS web interface. You can also specify contact information. o Networking Settings: These settings allow you to set up your device on several network protocols. You enter your IP address and Domain Name Service information here.
Restarting the NAS Server Restart the NAS server if you install a new version of the NAS web interface. Note: When restarting the NAS server, it is not required that you shutdown/restart the storage array. To restart the NAS server: 1. Using the NAS web interface, click the Configuration tab, then navigate down the System Configuration tree to Shutdown/Restart. 2. Select Shutdown and Restart then click Apply.
System Properties System Hostname The system hostname uniquely identifies your HP NAS VA server on your network. It is a text string that contains as many as 15 characters drawn from the alphabet (A-Z), digits (0-9), and minus sign (-). No distinction is made between upper and lower case. However, the name must begin with a letter and the last character must not be a minus sign.
Alternatively, you can manage your GUI password from the command line with the Apache server tool htpasswd. Caution: Removing or not assigning an administrative password is a security risk. Date and Time Settings The HP NAS server uses the information on this screen to keep track of the date and time for operations such as time stamps for file generation and modification. Failure to set the proper date and time may lead to confusing behavior or misleading time stamping of files and log messages.
4. Click Apply. *Information appears on the Identity screen. Note: Blank fields do not affect the functionality of the device. However, entering your system location (including rack ID and rack position) lets you easily determine which device has issued an alert when you receive notification of an error. (The email message contains the system name.) If you provide your system location information, you can easily troubleshoot or repair the problem.
Networking Settings TCP/IP Settings IP Addresses The HP NAS server has multiple PCI slots available for Network Interface Cards (NIC). The number of PCI slots available is dependent on the server you purchased for your system. NICs can be single-port, dual-port, or quad-port 10/100 cards, or single-port gigabit cards. A list of currently supported hardware (including NICs) is available on the support web site. When you initially set up your HP NAS VA, you need to configure the primary NIC.
Domain Name Service (DNS) Domain Name Servers convert system names that people can remember (such as nasva.fc.hp.com) to IP addresses (such as 123.45.67.89) that are used by packet-routing software. To enter the DNS information: 1. Using the NAS web interface, click the Configuration tab. 2. Navigate down the System Configuration tree to the Networking Settings > TCP/IP section and select DNS. 3. If required, enter the DNS Domain Name. The HP NAS VA can belong to only one domain.
NIS Settings The HP NAS VA supports Network Information System (NIS). NIS maintains a central database of names and locations of resources on a network. NIS was formerly known as Yellow Pages. NIS Requirements If a master NIS server is to be used as the primary NIS method, the Master NIS server must be located on the same subnet as the NIS client (your HP NAS VA).
9. customer must decide for themselves the priority they want to apply to NIS as a search order item. However, if NIS is enabled, NIS must be listed in the search order for each item in the Choose Name Service Switch list. Proceed by entering NIS into the search order for each line item according to your system environment needs.
NFS Settings NFS Settings Network File System (NFS) settings are optional. NFS is a client/server application that lets a computer user view and optionally store and update files on a remote computer as though they were on the user's own computer. 1. Using the NAS web interface, click the Configuration tab. 2. Navigate down the System Configuration tree to the Networking Settings and select NFS. 3. A table displays a list of exported file systems and their associated access lists. 4.
CIFS Settings CIFS Settings (Samba) Common Internet File System (CIFS) settings are managed within the Samba web interface. The Samba software suite is a collection of programs that implements the Server Message Block (commonly abbreviated as SMB) protocol for UNIX systems. This protocol is also referred to as the Common Internet File System (CIFS) or LanManager protocol. Among other options, Windows shares and WINS Addresses can be managed within Samba. To access Samba: 1.
Managing Storage The Storage Tab Please review the following sections before proceeding: o Storage Overview o Planning Your Storage Your HP NAS VA must be completely configured before you attempt to set up your storage using the Storage tab.
Quick Setup RAID Device Setup For RAID device setup with a new system, please review the instructions in the Getting Started Part 1 and Getting Started - Part2 sections of this manual. In the NAS web interface Storage tab > Quick Setup, select RAID Device Setup. The RAID Device Setup page manages any VA 7100 and/or VA 7400 attached storage. You can initialize these devices and create Logical Volumes which can be shared with external systems via NFS or CIFS.
Refresh o Refreshes the browser page Details o Provides a detailed page of information on the selected storage device, describing the device software, hardware configuration and version. This can be useful to users knowledgeable in the detailed inner working of the attached arrays.. Initialize and configure Device o Prepares the storage device for use with the GUI. Any existing Logical Unit (LUN) configuration on the devi ce is deleted, and a new LUN is created encompassing the entire available storage.
Advanced Setup Local Storage Advanced Setup of Physical Devices The Physical Devices page allows you to manage attached disk and RAID storage devices similar to the Logical Volume Manger level and requires a detailed knowledge of UNIX system administration and the Logical Volume Manager. Caution: Use of the Advanced Setup Tools functions requires you to use Command View SDM to create and manage LUNs. Incorrect use of the Advanced Setup tools can result in data loss.
file systems and data on the device will be lost. Remove Volume Group and All Associated Devices... o Removes the selected physical volume and it’s encompassing Volume Group from the system. All Logical Volumes, file systems and data on the device(s) will be lost. Add Device to a New Volume Group... o Adds the selected device to a newly created Volume Group. Add Device to Existing Volume Group... o Adds the selected device to a Volume Group. This increases the size of the Volume Group.
Volume Groups The bottom grid displays the Volume Groups (VGs) configured in LVM. The VG name, size and mount point are displayed. Menu picks allow you to manage these Logical Volumes. Action menu picks Force Hardware Rescan o Will cause the server to scan it’s hardware interface for attached disk and storage devices. This may take several minutes on large system configurations.
Command View SDM (Storage Device Manager) Connecting to Command View SDM When selected, this page will contain the Command View SDM configuration page for the attached array RAID storage device. This web interface allows detailed configuration of the attached storage device. Note that in order to access this page, you will need to have installed appropriate certificates in your browser, as detailed in the Using the Command View SDM page of this manual.
If you use a later version of the plug-in, the Command View SDM will not launch correctly. Later versions cause problems because the plug-in no longer uses the internet Explorer certificate database and instead references the internal database maintained by keytool. You can get further information about this change at http://developer.java.sun.com. The first time you attempt to launch the Command View SDM, your browser will determine whether you have the correct version of the Java Plug-in installed.
certificate radio button is selected, then click Next. 9. Complete the Certificate Manager Import Wizard dialog, the click Finish. 10. Click Yes in the confirmation dialog box, then click OK. The first time you launch the Command View SDM browser, the software asks you to accept the certificate from Hewlett-Packard. you can choose either to accept the certificate each time you launch a session or to accept it for all sessions. To verify the certificate is installed correctly: 1.
Managing Arrays and LUNS Storage Array Summary The Storage Array Summary page displays a table that lists the storage array attached to the HP NAS VA and information about its storage configuration. To examine and manage the array: 1. Using the NAS web interface, click the Storage tab. 2. Navigate down the System Storage tree to the Advanced Setup > Command View SDM section and select Command View SDM. This will open the Command View SDM web interface. 3.
1. Using the NAS web interface, click the Storage tab. 2. Navigate down the System Storage tree to Quick Setup > RAID Device Setup. 3. Select the Action button. 4. Pick the Action menu selection Force Hardware Rescan (slow). This will cause the server to scan it’s hardware interface for disk and storage devices. This may take several minutes on large configurations. You may wish to review the following: Advanced Setup of Physical Devices Naming or Renaming an Array To name or rename an array: 1.
Managing Volume Groups Viewing Volume Groups A volume group is made up of one or more LUNs. To view the volume group: 1. Using the SDM web interface, click the Storage tab. 2. Navigate down the System Storage tree under Advanced Setup > Local Storage and select Logical Vols/Volume Groups.
Storage tab. Under the Local Storage section, select Logical Vols/Volume Groups. This page is intended for users knowledgeable in HP-UX system administration and the Logical Volume Manager. Caution: Incorrect use of these tools will result in data loss. A complete management suite is available to manage your logical volumes and volume groups. More help is available at Managing Logical Volumes and Volume Groups.
Managing Logical Volumes Viewing Logical Volume Information Logical volumes are the basic unit of logical storage for a file system on the HP NAS VA. You create logical volumes by allocating space in a volume group. Therefore, before you can create a logical volume, you must create a volume group. A complete management suite is available to manage your logical volumes and volume groups. More help is available at Managing Logical Volumes and Volume Groups.
o For UNIX users, create an export. Editing a Logical Volume 1. 2. To edit the logical volumes that exist on your HP NAS VA: Using the NAS web interface, click the Storage tab. Navigate down the System Storage tree to the Advanced Setup > Local Storage section and select Logical Vols/Volume Groups.
Allowing Access to Data Granting Users Access to Data Before network users can access the HP NAS VA, you must give them permission. This is a security concern. Each platform grants permission differently: o Windows: Shares are permissions that let you control Microsoft Windows users' access to data. You can create SMB shares for any directory within a file volume, including the root.
Verifying the HP NAS VA is Accessible to Users Windows To assign (map) a drive letter to a shared network resource: 1. In Network Neighborhood, double-click the computer that has the shared resource. 2. Right -click the shared folder and then click Map Network Drive. 3. To connect under a different user name, type the name in Connect As. 4. If you do not want to connect to the shared directory each time you log on, clear Reconnect at Logon.
Monitoring the System The Status Tab This tab allows you to monitor system status.
System Status Viewing the System Log The System Log page displays the contents of HPUX syslog. To view the System Log page: 1. Using the NAS web interface, click the Status tab. 2. Navigate the tree structure to the System Status section. 3. Select Syslog.
Performance Statistics Viewing System Utilization System utilization lets you view: o the current utilization of the CPUs o the current utilization of your system memory o Run Queue displays the current number of active processes waiting on scheduling. If this number is high, you may have users running computing jobs and not just file serving on the solution. This can adversely affect performance. o a table displays the amount of memory in the NAS server and the number of CPUs.
Viewing Top Output To view Top output: 1. Using the NAS web interface, click the Status tab. 2. Navigate down the System Status tree to the Performance Statistics section and select Top.
System Software Viewing the Software Patch List To view the list of currently installed software patches:: 1. Using the NAS web interface, click the Status tab. 2. Navigate down the System Status tree to the System Software section and select Patch List. A list of installed patches is displayed, filtered from the swlist command. Caution: This HP-UX operating system has been optimized and modified for the HP NAS VA solution for better file serving performance and manageability.
Contacting Support The Support Tab You can navigate within the Support Tab logic tree to: o View local support documentation o Gain access to web documentation o HP technical documentation o HP support o HP NAS website o HP software depot You can get HP contact information through any of the HP websites under the support tab. Just click on the link and then click on support. The HP NAS VA support website is available at www.hp.
Support Viewing Local Support Documentation You can view local support documentation from the NAS VA web interface Support Tab. Navigate the support logic tree to Support and select Local Documentation. Any locally stored support documents are available here. For further information, you can access HP support documentation on the web.
Web Documentation Viewing HP Support Documentation on the Web There is a variety of HP support documentation available on the web. You can access some of it through the Support tab under the Web Documentation section. o HP Docs on the web - provides access to technical documentation for many HP products. o HP NAS Online - takes you to the HP NAS web site with up to date information on all HP NAS products, including the HP NAS VA. o HP Software Online - links you to the HP Software depot for all HP products.
Security About HP NAS VA Security Two basic ways to ensure the security of the HP NAS VA are: o control access to the device o set an administrative password to ensure that only authorized users gain access to key administrative functions Access and rights to the data that clients store on the HP NAS VA device can involve security in the Windows and UNIX environments. The subject of security is beyond the scope of this manual, but many excellent books are available.
HP NAS VA Security in an NT -only Environment The security schema for NT systems is different from that of UNIX, but there are two similarities: o You can set up the security model to allow user authentication at the share level; alternatively, you use a security domain, in which authentication is handled by a Primary Domain Controller (PDC) or Backup Domain Controller (BDC). o Processes are run with an identity of a user and any groups to which that user belongs for either that workstation or the domain.
At boot-up time, the HP NAS VA locates the PDC in the specified account domain, as well as the domain controller in the specified resource domain, then logs on to that domain. Permissions You can assign the following permissions to an NT resource: o Read o Delete o Write o Execute o Change Permissions o Take Ownership Additionally, you can group these permissions into standard permissions that consist of one or more previous permissions.
then determines the permissions to grant. Recall from HP NAS VA Security in a UNIX-only Environment that permissions are granted to three distinct groups: o user o group o other If the owner of the UNIX file does not map to a user in the NT domain, then an NT user ID will be generated in the local UNIX domain.
This table shows the mapping that takes place between the permissions. UNIX NT Equivalent r-Read -wWrite, Delete --x Execute -wx Write, Delete, Execute r-x Read, Execute rwRead, Write, Delete rwx Full Access --No Access Note: If share-level security is being used in the Windows environment, then only the share passwords affect access. The UNIX permissions have no effect.
The following table summarizes CIFS/9000 file locking: Mandatory Share Mode (Open Mode) CIFS/9000 Lock Windows Yes Lock UNIX – no advisory locking Planned Enhancement Lock UNIX - advisory locking Yes (HP-UX AR 0901) Lock UNIX/NFS – no advisory locking Planned Enhancement Lock UNIX/NFS – advisory locking Yes (HP-UX AR 0901) Lock PC-NFS Yes (HP-UX AR 0901) Byte Range Locking Lock Windows Yes Lock UNIX – no advisory locking Planned Enhancement Lock UNIX – advisory locking Yes Lock UNIX/NFS – no advisory lockin
disinfection for PCs and entire networks. Sophos Anti-Virus for Unix has two components: o SWEEP which provides on-demand checking of files on Unix file servers or workstations. Scheduled scans are also possible using SWEEP and standard Unix facilities. o InterCheck which is placed on non-Unix workstations to allow on-access virus checking.
Backup Backup Overview Backup of NAS devices has traditionally been difficult and time consuming. Technologies such as NDMP have been developed to improve this. However, NDMP is still slower and less reliable than integrating with the native agents that most backup vendors provide. The NAS operating system used in the NAS VA is based on HP-UX. This allows backup servers and agents to be run natively on the NAS head. This provides the best performance and compatibility available today.
High Availability Clustering Overview For mission critical environments, NAS head clustering is a requirement. The NAS VA is an ideal fit for this environment due to its modular nature. The high performance NAS head used in the NAS VA can be clustered to provide an extremely dense highly available NAS solution. In addition to high availability, clustering technologies provide scalable performance.
Other Features Using Snapshots A snapshot file system is used to duplicate the contents of a file system at a particular point in time, much like taking a photographic snapshot. Although files may change in the future, you have captured the contents of the file at the moment the snapshot was created. This snapshot copy of your data is read only.
support. This feature, as well as HP product enhancements, gives the customer exceptional value with CIFS/9000 Server over Samba open source and competitors' Windows interoperability products. CIFS/9000 Server runs on HP's enterprise ready server family, and has the flexibility to run as a connectivity application for Windows clients to a general-purpose server, or with NFS as a dedicated file server platform on a NAS single purpose server like you HP NAS VA solution.
Feature Mix Native ed Support NT4.0 BDC Yes No Support Member Server (CIFS/9000) Yes Yes Global and Local Groups Yes Yes Domain Local, Universal Groups; Group No Yes Nesting NTLM Authentication Yes Yes Kerberos Authentication Yes Yes* * UPN Logon Name No Yes* Dial-In Options (Q193897) No Yes Intellimirror Yes Yes* * Clients: W95, W98, NT4.0, W2000 Yes Yes SIDHistory No Yes *Windows 2000 Pro only For more Windows 2000 features, see the NAS Windows 2000 document on the support web page (www.hp.
o o o o Intellimirror: provides the primary benefits related to custom mobile profiles o User Data Management - Users have access to their data regardless of the hardware that they logged on to. o Software Installation and Maintenance - Users have "just in time" application installations regardless of the hardware that they are logged on to. o User Settings Management - Users' desktops are available regardless of the hardware that they are logged on to.
To turn user quotas off: vxquotaoff mount_point SNMP SNMP Daemon The SNMP daemon is the Master SNMP Agent and the collection of subagents that would attach to the Master Agent collectively form a single SNMP Agent. The SNMP Agent accepts SNMP Get, GetNext and Set requests from an SNMP Manager which cause it to read or write the Management Information Base (MIB). The MIB objects are instrumented by the sub Agents.
Virtual Array Virtual Array Your HP Virtual Array is preconfigured for you at installation by the HP Customer Engineer. Administrators with a strong working knowledge in HP -UX administration and the Logical Volume Manager can make changes through the Command View SDM. The term “Virtual Array” refers to the way the disks within the array are treated as a pool of data storage blocks instead of real physical disks.
RAID 1+0 provides data redundancy and good performance. However, the performance is achieved by using a less efficient technique of storing redundant data called “mirroring.” Mirroring maintains two sets of the data: a primary set and a backup set, or “mirror”, of the primary set. Therefore, half of the disk space is consumed by redundant data. The data is also striped across the disks in the array. Figure 2 is an example showing the distribution of primary data and mirror data in a RAID 1+0 configuration.
Also, if a third disk in the LUN fails while in a degraded state, parity can no longer be used and all data in the LUN becomes inaccessible. Figure 3 is an example showing the distribution of user data and parity data in a RAID 5DP configuration. The example shows one LUN with five stripes, each stripe with five segments: three data segments and two parity segments (P n and Q n ). The segments are striped across the disks in a rotating fashion.
Troubleshooting General Issues Problem Solution The storage device ? Make sure the cables are connected correctly and securely. The does not power on. primary power cord needs to be connected when power is turned on. ? Cycle the power switch off and back on. On boot up, my NAS VA does not bring up the web interface, leaving me stuck at a prompt. From the command line, run set_parms initial.
Problem Solution What happens if a drive fails and there is no active spare? HP recommends that at least one drive be assigned as a global active spare at all times. If a drive fails and no active spare is present, system warnings alert you that a drive failure occurred and that the logical drive (RAID set) is in a critical state. Although the system continues to rebuild and serve files without interruption, there is a much greater risk of data loss in this state.
Browser Issues Problem The web browser does not connect to the unit. The HP NAS VA is not responding. The IP address does not respond to the web browser. The NAS web interface pages are not displaying correctly in Internet Explorer. The NAS web interface in Netscape is small and unreadable on my HP-UX machine. The NAS web interface pages are not displaying on my HP-UX machine. 80 Solution Try disabling the proxy on the web browser, or exclude intranet addresses.
Problem Solution My new system does not recognize that there are arrays attached. The first time a newly ignited operating system is brought up, the NAS web interface does not recognize the attached arrays. Read the Getting Started - Part 2 section of this manual for information on how to get your system to recognize the attached arrays. Release Notes The following late-breaking information supplements the HP NAS VA User's Guide and online help.
Known Problems 1. Dual homed systems: If you have a problem communicating with your arrays on a dual homed system, including failure of the armdiscover command, there are several items that should be investigated: o Check to make sure the following file exists /opt/sanmgr/hostagent/config/commIpAddr.txt This file contains the IP address of the default or onboard NIC (LAN0). If the file does not exist, you should create it. o The netconf file can tell you the IP address of LAN0.
Glossary Glossary A Access Control List (ACL) A list associated with a file that contains information about which users or groups have permission to access or modify the file. Active spare A previously installed physical drive used as a backup in case an assigned drive fails. The active spare automatically takes over the duties of the failed drive. Agent A program that performs a background task for a user and reports to the user when the task is done or some expected event has taken place.
C CIFS See Common Internet File System. Collision The result of two devices transmitting signals at the same time on the same channel, usually resulting in a garbled transmission. Command View Storage Device Manager (SDM) A web interface for the storage array that allows you to manage the storage on the array, monitor the status of the arrays, perform array diagnostics, and download new firmware.
E Event log A log of critical or informational events that occurred on the network. Export To make a portion of a file system on a remote computer accessible to a local (client) computer. G Gateway A combination of hardware and software that links two different networks using different communications protocols so that information can be passed from one to the other. A gateway both transfers information and converts it to a form compatible with the protocols used by the receiving network.
I IP address A unique 32-bit value that identifies network hosts using TCP/IP. An IP address, or block of addresses, is assigned upon application to organizations responsible for that function. No two network hosts can be assigned the same IP address. Each address consists of a network number, optional subnetwork number and host number, written as four numbers separated by periods. Each number can be 0 to 255.
N Network File System (NFS) An network protocol designed by Sun Microsystems that allows all network users to access shared files stored on computers of different types. Users can manipulate shared files as if they were stored locally on the user's own hard disk. With NFS, computers connected to a network operate as clients while accessing remote files, and as servers while providing remote users access to local shared files. The NFS standards are publicly available and widely used.
S SCSI See Small Computer System Interface. Security Account Manager (SAM) database A database used to authenticate users. Server Message Block (SMB) protocol A network protocol designed and implemented by Microsoft and used by Windows clients to communicate file access requests to Windows servers. This has been replaced by CIFS. Share To make files, directories, or folders accessible to other users over a network.
allowed when they serve to delimit components of "domain style names." No blank or space characters are permitted as part of a name. No distinction is made between upper and lower case. However, the name must begin with a letter and the last character must not be a minus sign or period. The name you use appears on the Identity screen of the user interface and in Network Neighborhood in a Windows networking environment.
W Windows Internet Naming Service (WINS) The Windows NT Server method for associating a computer's host name with its address. Workgroup A group of computers on a network that connect to each other using peer relationships.
Index A Access Granting User............................................................................................................................................................. 51 Multi-Platform ........................................................................................................................................................... 63 Verifying User.......................................................................................................................................
B Backup application ........................................................................................................................................................ 67 Backup Overview.......................................................................................................................................................... 67 Bitmap............................................................................................................................................................
Creating LUNs ............................................................................................................................................................... 15 Customer Support .......................................................................................................................................................... 60 Contacting......................................................................................................................................................
Samba .......................................................................................................................................................................... 35 While You Work ....................................................................................................................................................... 22 Hostname Security.................................................................................................................................................
Lock Files........................................................................................................................................................................ 64 Logical Storage .............................................................................................................................................................. 13 Logical Unit Number Array...............................................................................................................................
N Nameserver..................................................................................................................................................................... 80 NAS Web Interface ....................................................................................................................................................... 21 Netconf file .................................................................................................................................................
Network....................................................................................................................................................................... 55 NFS .............................................................................................................................................................................. 55 Status .................................................................................................................................................
Restarting Your NAS Server ....................................................................................................................................... 25 Run Queue....................................................................................................................................................................... 55 S Samba CIFS Settings ...............................................................................................................................................
Sun MicrosystemsTM Java Plug-in ............................................................................................................................ 42 Support HP NAS VA Service and Support .......................................................................................................................... 60 Local Documentation................................................................................................................................................ 59 Planning.............
V VDL.................................................................................................................................................................................. 65 Viewing HP Support Documentation..................................................................................................................................... 60 Local Support Documentation ................................................................................................................................
