HP StorageWorks External Storage XP user guide Part number: T1706-96002 Second edition: December 2005
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Contents About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Intended audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prerequisites. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Firmware versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related documentation . . . . . . . . . . . . . .
LU Operation pane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Device Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Device List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Filter button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A Using XP12000 disk arrays with EVA GL disk arrays attached as subordinated external storage disk arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 Tables 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 6 Path Setting window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Using Priority Up to raise defined alternate paths in the LU Operation pane . . . . . . . . . . . . . . . . . . . 60 Add Paths window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About this guide This guide provides information about the following: • Mapping LDEVs • Setting alternate paths • Using External Storage XP • Combining External Storage XP with other HP StorageWorks products • Understanding requirements and restrictions • Preparing for External Storage XP operations • Installing External Storage XP • Uninstalling External Storage XP • Powering on and off disk arrays • Performing External Storage XP operations • Configuring external LUs • Mapping remote command devices • Tro
Firmware versions The recommended firmware versions shown in Table 1 provide the optimal level of support for the features provided with this product. Older firmware versions can be used; however, product features enabled with newer firmware will not appear.
CAUTION: Indicates that failure to follow directions could result in damage to equipment or data. IMPORTANT: NOTE: TIP: Provides clarifying information or specific instructions. Provides additional information. Provides helpful hints and shortcuts. HP technical support Telephone numbers for worldwide technical support are listed on the HP support web site: http://www.hp.com/support/.
1 External Storage XP for the XP10000/XP12000 Use External Storage XP to connect different types of HP or non-HP external storage devices (see ”Storage devices that can be connected as external disk arrays” on page 24) to an HP StorageWorks XP10000/XP12000 disk array, and map and access Logical Units (LUs) on external devices as if they were part of the XP10000/XP12000 array.
NOTE: With the exception of MSA, a host can directly access external disk array volumes that have not been mapped as local disk array volumes. Figure 1 External Storage XP concept Figure 1 illustrates a connection between a local disk array and an external disk array interconnected using External Storage XP software and fibre channel hardware. In this figure, the external disk array is connected to the external port of the local disk array via a switch (or hub) using a Fibre Channel interface.
You can set up to eight paths to the external LU (including paths set automatically). Among the paths to the external LU, the path with the highest priority is called the primary path, and other paths are alternate paths. When an external LU is mapped to an internal XP LDEV using External Storage XP, host I/O operations to an external LU via the XP10000/XP12000 are normally enabled using the mapped path.
switch. Since two ports of different clusters must be set in the local disk array for External Storage XP to use alternate path settings, HP does not recommend the configuration shown in Figure 4. Figure 4 Example of incorrect alternate path configurations Examples of switching I/O execution paths to alternate paths There are two alternate path modes: Single mode and Multi mode.
NOTE: As you restore the error path, use of the restored path automatically resumes. Figure 5 Alternate path mode is Multi mode NOTE: In Multi mode, active I/O load balancing occurs across external disk array ports and controllers. The XP and EMC DMX are examples of external disk arrays that use Multi mode. Alternate path mode is Single mode Figure 6 shows an example of when the alternate path mode is Single mode.
NOTE: As you restore the path with a priority higher than the current path, the I/O execution path automatically switches to the restored path with the highest priority. Figure 6 Alternate path mode is Single mode Alternate path mode is Single mode and at least one alternate path is in Standby status Figure 7 shows an example of when the alternate path mode is Single mode and there are alternate paths in Normal and Standby status.
NOTE: When the external disk array is an EVA disk array, as you restore the path with the highest priority, the I/O execution path switches back to the restored highest priority path. In this case, the status of the path for which the status changed to Normal when the error occurred changes back to Standby.
Figure 8 Alternate path mode is Single mode with only alternate paths in Standby NOTE: External disk arrays with Active/Standby (A/S) controllers, such as the MSA, are an example of Figure 8. A notable characteristic of using A/S controller disk arrays as external storage is that there is typically only a single port to the owning controller. Paths to the non-owning external controller’s ports are shown as Standby status. I/O load balancing does not occur across external controllers.
Writing new data to mapped external LUs Figure 9 Writing new data to mapped external LUs Figure 9 shows an example of writing new data from a host connected to the local disk array to a mapped external LU. In this case, use the following procedure: 1. Use the External Storage XP GUI to map the LU in the external disk array as an internal XP LDEV of the local disk array. NOTE: You must set IO Suppression mode to Disable. 2. Choose the emulation type of the mapped LDEV.
Using existing data in mapped external LUs NOTE: With the exception of MSA, a host can directly access external disk array volumes that are not mapped as local disk array volumes. Figure 10 Using existing data in mapped external LUs (without formatting) Figure 10 shows an example of using existing data in a mapped external LU from the host connected to the local disk array. In this case, use the following procedure: 1.
Using external LUs for Volume Migration under Auto LUN XP Figure 11 Volume Migration using external LUs Figure 11 shows an example using an external LU for the Auto LUN XP Volume Migration operation. The mapped external LU is set as the source volume. The local disk array internal XP LDEV is set as the target volume. Existing data in the external LU is (in effect) migrated manually to the internal XP LDEV on the local disk array using Auto LUN XP volume migration.
Using external LUs for Business Copy operations Figure 12 Business Copy operations using an external LU Figure 12 shows an example using an external LU for Business Copy (BC) operations. The mapped external LU is set as the S-VOL of the BC pair. The local disk array internal XP LDEV is set as the P-VOL of the BC pair. For detailed information about Business Copy operations, see the HP StorageWorks Business Copy XP User Guide for the XP10000/XP12000. To perform this operation, follow these steps: 1.
• Auto LUN XP (manual mode, only) Use Auto LUN XP to display monitoring information concerning external volumes. For an example of using Auto LUN XP with External Storage XP, see ”Using existing data in mapped external LUs” on page 20. • Continuous Access XP (sync and async) • TrueCopy for z/OS® • Continuous Access XP Journal • Universal Replicator for z/OS • Business Copy XP For an example of using Business Copy XP with External Storage XP, see ”Using external LUs for Business Copy operations” on page 22.
NOTE: You must run Command View XP or XP Remote Web Console in Modify mode to perform External Storage XP operations. In View mode, you can only view External Storage XP information. • External Storage XP Enable the licensed External Storage XP feature in Command View XP or XP Remote Web Console.
Table 3 External Storage XP requirements (continued) Item Requirement Maximum number of external LUs that can be connected 15,360 for the XP12000 8,192 for the XP10000 1,024 volumes can be connected per port NOTE: If you use Snapshot XP, the number of external LUs that can be connected is as follows: • For the XP12000: Number of external LUs + Number of virtual LUs ≤15,360 • For the XP10000: Number of external LUs + Number of virtual LUs ≤8,192 Maximum number of FC paths that can exist to one external
When the amount of I/Os from the host to the external volume exceeds the maximum amount of I/Os the external disk array can accept, commands from the host to the local disk array might time out. As you configure the system using external volumes, consider the external disk array’s I/O capacity.
example, the XP10000/XP12000 can realize two fully-sized OPEN-3 LDEVs, with some space (insufficient to create a full Open-3) left over. Figure 14 External LU capacity is larger than capacity of specified emulation type • Figure 15 shows an example where the original capacity of the external LU is smaller than the normal size of the XP10000/XP12000 emulation type.
• Mapped LUs with different external LU attributes or reside on different arrays cannot be used to create one LUSE volume. • Attributes originally set for an LU on an XP external disk array (such as port security, LUN security, and LDEV Guard attributes) are not recognized by the local disk array when the external XP LU is mapped as a local disk array internal XP LDEV. To keep the original attributes, set those attributes on the mapped external LU from the local disk array side.
Uninstalling External Storage XP To uninstall External Storage XP, cancel any existing Flex Copy copy pairs, and delete any external LU mappings using the following procedure: 1. Log in to Command View XP or XP Remote Web Console. For instructions, see the HP StorageWorks Command View XP User Guide for XP Disk Arrays or the HP StorageWorks XP Remote Web Console User Guide for XP12000/XP10000. 2.
For instructions on mapping external LUs, see ”Mapping external LUs” on page 45. Using external LU groups When mapping an external LU as an internal XP LDEV, register the external LU in an external LU group. You can classify external LUs into groups according to their use. These groups are called external LU groups (ExG). For example, register several LUs in an external disk array in one external LU group.
Powering on and off disk arrays This section describes procedures for turning the power on or off at the local disk array and the external disk array after External Storage XP operations have begun. CAUTION: The Disconnect Subsystem command is not supported for this version. Wherever this section mentions execution of the Disconnect Subsystem command, please execute the Disconnect Volume command for each external disk array volume.
NOTE: When executing the Check Paths & Restore Vol. command, if the external LU is ready to be restored as the mapped LU, the external LU is set to Available. However, if the external LU is not ready to be restored, the external LU status remains as Blocked. NOTE: When executing the Check Paths & Restore Vol. command, if the external LU is ready to be restored as the mapped LU, the external LU is set to accept the I/Os and you can resume using the external LU as a mapped LU.
• ”LU Operation pane” on page 33 • ”Port Operation pane” on page 39 Starting External Storage XP operations 1. Log in to Command View XP or XP Remote Web Console. For instructions, see the HP StorageWorks Command View XP User Guide for XP Disk Arrays or the HP StorageWorks XP Remote Web Console User Guide for XP12000/XP10000. 2.
• Information Area Displays information according to the contents of the Device List, including: • Total number of External LUs: Number of external LUs connected. • Found WWNs: WWNs found when you clicked Discovery in the Device Tree (left pane). • Remain LUs: Number of external LU numbers available (out of 15,360), other than those that have already been used. • WWN Entry: Number of LUs that are currently used in the external disk array out of the maximum theoretically possible (15,360).
• Discovery Appears in the branch under the product name of the external disk array connected to the local disk array. When you select Discovery, External Storage XP searches external disk array ports that can be connected, and displays their WWNs.
Table 4 Items appearing in the Device List (continued) Item selected in Device Tree Information displayed in Device List Product name of connected external disk array ExG: External LU group number. This appears when you group the LUs from one or more external arrays under a common number. Serial: Serial number of the storage product. Product: Storage product name. Vendor: Storage vendor name. Ex-Dev. Status: Status of external disk array. Possible values: Warning, Checking, Cache Destage, and Disconnect.
Table 4 Items appearing in the Device List (continued) Item selected in Device Tree Information displayed in Device List Discovery WWN: World Wide Name of a recognized external array port. Serial: Serial number of the storage product. Product: Storage product name. Vendor: Storage vendor name. WWN of external disk array port LUN: LU number in the external disk array. Characteristic: ID number of external LU. Device: Device name of external LU. Ex-Dev. info.: Information about external disk array.
Filter button Displays the Filter window where you can restrict LUs displayed in the Device List. Figure 18 Filter window This window contains Enable and Disable options that control the display of unsupported devices. When you select Enable, information about unsupported disk arrays appears in the Device Tree and Device List. Unsupported disk arrays are indicated by Unknown Devices in the Device Tree and Device List. The Disable option is selected by default.
• Delete Cancels settings selected in the Preset list. Port Operation pane Use this pane to check port settings and set port attributes. This section describes items displayed in the pane. For instructions, see ”Setting port attributes on the local disk arrays” on page 44.
• Cancel button Cancels all settings in the Preset list. Port Tree This tree displays ports in the local disk array. Contents displayed in the Port List (right pane) vary according to the item selected in the Port Tree (left pane). Figure 21 Port Tree The Port Tree displays the following: • Subsystem When selected, displays information about all ports under Subsystem (the local array).
The rows corresponding to the ports that are about to be acted upon appear in the Preset list and the corresponding row in the Port List appears in blue italics. Figure 22 Port List The Port List displays the following items: • Port Port number. • Attribute Port attribute. External ports are used for connecting to the external disk array. • PCB Mode PCB mode of the port. Ports designated as External do not have High Speed mode.
When you select a setting in the Preset list and right-click, the following commands appear: • Detail Displays the Preset Detail window with detailed information about actions selected in the Preset list. When an error code appears in the Preset list, a corresponding error message appears in the Preset Detail window. Figure 23 Preset Detail window (changing port attribute) • Delete Cancels actions selected in the Preset list.
Overview of steps required to define external LUs Before using External Storage XP, define the external LUs and internal XP LDEVs. Figure 24 Tasks required before using external LUs The following is the general procedure for tasks required before performing External Storage XP operations. For detailed instructions see subsequent sections. 1. Configure LUs, ports, and host modes on the external disk array (”Configuring external disk array LUs, host mode, and ports” on page 44). 2.
6. For mainframe emulation types, use Volume Management to resize the volume or perform the Write to Control Blocks operation (see the HP StorageWorks LUN Configuration and Security Manager XP User Guide for the XP10000/XP12000). 7. Define alternate paths between the external disk array and the local disk array (”Defining alternate paths” on page 59). 8. Use LUN Manager to define paths (see the HP StorageWorks LUN Configuration and Security Manager XP User Guide for the XP10000/XP12000.
If an error occurs, the failed setting appears in the Preset list and an error code appears. Figure 25 Error when changing port attribute To view error messages, select the failed row, right-click, and select Detail. 6. Set the topology according to the connection type. • When a switch is connected, set the topology to Fabric ON + Point to Point. • When a point-to-point connection is used, set the topology to FC_AL and AL_PA.
Add LU window NOTE: Before mapping the external volume, ensure that no other applications (such as RAID Manager) that use the command device are executing. Stop any applications that are executing before mapping the external volume.
• Characteristic2 External volume’s extended identifying information. This information is used for identifying logical volumes in the EVA disk array. For more information, see ”Description for Characteristic2” on page 86. • ExG (1-16384) Group number of connected external LUs. You can specify any decimal value from 1 to 16384. The E displayed outside the text box is the capital letter of the external LU group.
• Select Paths button Displays the Select Paths pane (see Figure 27) appears. Use the Select Paths pane to select paths as candidates for primary and alternate paths and select paths that cannot be set to primary and alternate paths. By default, all paths with a confirmed connection status of normal are set as candidates for primary and alternate paths. However, to set a specific path as the alternate path, use the Select Paths pane to specify candidates for alternate paths.
If you let alternate paths be set automatically with all connected normal paths as candidates, you can omit the setting operation on the Select Paths pane. Figure 27 Select Paths pane The Select Paths pane contains the following items: • Port Select the disk array port from the drop-down list. You can set alternate paths for the port you select. • Selected Paths External disk array port for which you can set the alternate path connecting to the disk array port selected in Port.
Auto Map Setting window Figure 28 Auto Map Setting window • ExG (1-16384) Group number containing the specified external LU. Specify any decimal value from 1 to 16384. The E displayed outside of the text box is the capital letter of the external LU group. • Emulation Type Emulation type of the external LU from the perspective of the XP10000/XP12000. To map the external LU as an open system volume, select the emulation type from the list.
goes to the XP10000/XP12000 cache and then to the external LU. If you select Disable, host I/O goes directly to the external LU cache, bypassing XP10000/XP12000 cache. If you set IO Suppression mode to Enable, Cache Mode is set to Disable automatically. CAUTION: If you set Disable, the bind mode of Cache LUN XP cannot be set.
• Cancel button Cancels all mapping operations, closes the Auto Map Setting window, and returns to the LU Operation pane. Select LDEV window Figure 29 Select LDEV window • CU list Select the CU number of the local subsystem to which you want to map the external LU. • LDEV Map Each cell in the map represents an internal XP CU and LDEV number. Select a cell for the internal XP LDEV on the map.
b. Select an emulation type from the Emulation Type list. c. Select the number of volumes to create in the LDEV box. d. Select the IO Suppression mode. e. Select the Cache Mode. f. Select the number of alternate paths that are automatically set in the Alternate Path box. g. Select the CLPR to be used in the CLPR box. To limit the CU selection range, select the Limited check box. h. Select the CU number in the CU# list box. i.
• To map one external LU in the series to a different internal XP LDEV: Map the external LU automatically using the Linear button. Release the Linear button, and map the external LU individually. . Figure 31 Mapping one external LU in a series to a different (non-sequential) internal XP LDEV 7. If you do not want to automatically set primary and alternate paths, but want to specify paths set as candidates for primary and alternate paths, click Select Paths. The Select Paths pane appears.
• If you do not need to set the SSID, the Add LU window closes, and the LU Operation pane appears. Settings appear in blue italics in the Device Tree and Device List. Contents specified in the Add LU window appear in the Preset list. To check details of settings, select the setting in the Preset list, right-click, and select Detail. To cancel settings, select the setting in the Preset list, right-click, and select Delete. Go to step 14. 11.
disk array’s port in the Device Tree. Select and right-click the volume you want to display, and select VMA Information. Figure 34 VMA Information pane The VMA Information pane displays the following information: • Vendor External disk array vendor. • Product External disk array product name. • LUN LU number of the external volume. • Attribute Select from the following access attributes: • Read/Write: Both read and write operations can be performed on the volume.
Setting alternate paths on each external LU Before you can use the external LU mapped as an internal XP LDEV, set at least one alternate path from the internal XP LDEV to the external LU (likely by way of an alternate controller). For detailed information, see ”Alternate paths” on page 12. NOTE: You can add or delete alternate paths by selecting multiple external LUs at one time.
• Product The external disk array product name • Serial The external disk array serial number • Group The external LU group and reference number • Characteristic Identification number of external LU. • Device The external LU device type • Capacity Capacity of external LU • Alternate Path List Status of alternate paths. The Alternate Path list consists of two tables. The Configured Paths table displays previously defined paths. The Available Paths table displays available paths.
• Backoff: The external disk array replied Backoff. The status of the path is Waiting because a temporary error occurred in the external disk array’s volume. The primary path does not change to the alternate path in this status. After the error recovery, the status becomes Normal. If the status cannot be recovered from the error, the path status changes to the other status.
Changing the priority of alternate paths To change the priority of alternate paths, use the Priority Up and Priority Down commands displayed in the Path Setting window (Figure 36). Priority Up raises the priority of the path selected in the Alternate Path list. Priority Down lowers its priority.
6. Click Apply in the LU Operation pane. A confirmation message appears. 7. Click OK. The alternate path defined in the Path Setting window is applied to the local disk array, and specified contents appear in the Device List. 8. If errors occur during alternate path operations, failed settings appear in the Preset list, and error codes appear. To check error messages, select the failed setting, right-click, and select Detail. Canceling defined alternate paths 1.
NOTE: Use the Add Paths window to add paths to multiple external LUs at one time. However, path settings might not be applied because of the current path setting of each volume. After you click Set in the Add Paths window, check whether or not the new path settings can be applied in the Path Setting window for each external LU. If the setting cannot be applied, the setting from the Add Paths window does not appear on the Path Setting window.
7. Ensure that added paths are applied to the disk array in the Path Setting window. You can also change the alternate path setting in this window. 8. Click OK to save the settings. The Path Setting pane closes, and the LU Operation pane appears. Selected rows in the Device List appear in blue italics. Specified settings appear in the Preset list. To check setting details, select the setting in the Preset list, right-click, and select Detail.
• Release Moves WWNs to Unselected Paths. • OK Saves settings in the Delete Paths window, closes the Delete Paths window, and displays the Path Setting window. • Cancel Cancels all of the settings in the Delete Paths window, and closes the window. To delete the alternate paths of multiple external LUs: 1. In the External Storage XP operations window, click LU Operation. The LU Operation pane appears. 2. In the Device Tree, select an external LU group number.
Obtaining information about external LUs The LDEV Information window displays information about external disk arrays and external LUs mapped as internal XP LDEVs. To display this window, select the external LU group number in the device list, click the LU you want to display in the device list, right-click, select LDEV Information.
• View all LUs button Displays information about all the external LUs in the LDEV list. • View all Volumes button When the external LU is part of a LUSE volume, the LDEV list displays all LDEVs that make up the LUSE volume. LDEVs in other external LUs are not displayed, however, even though those LDEVs may be part of the LUSE volume. To check all LDEVs configuring a LUSE volume, use the Volume Detail command (”Displaying configuration information for external LUs (Volume Detail)” on page 67).
5. Click the row of the External Storage XP volume in the LDEV list, right-click, and select Restore. Figure 40 Shortcut menu of the LDEV Information window The Ex-Dev. Status column in the selected external LU row changes to Restore. 6. Click OK. The LDEV Information window closes, and the LU Operation pane appears. Specified contents appear in blue italics in the Device List and appear in the Preset list. To check details of settings, select the setting in the Preset list, right-click, and select Detail.
Mapping settings are preserved, even though the external LU is disconnected. Therefore, you can resume using the external LU as a mapped LDEV with the former settings. For instructions on resuming use of disconnected external LUs, see ”Checking connection status and resuming external LU operations (Check Paths & Restore Vol.)” on page 69. CAUTION: Executing the Disconnect Subsystem or Disconnect Volume command forcibly stops all host I/O operations to the specified LU.
CAUTION: To access the external disk array after executing the Disconnect Subsystem command, execute the Check Paths & Restore Vol. command. Disconnecting single external LUs (Disconnect Volume) 1. In the LU Operation tab, select an external LU group number in the Device Tree (left pane) Information about external LUs in the selected external LU group appears in the Device List (right pane). 2. Select the external LU in the device list, right-click, and select Disconnect Volume.
The path status displayed in the Path Setting pane changes to Checking. When External Storage XP finishes checking path status and the external LU can be restored, the Status column changes to Normal. If the external disk array cannot be restored, the status changes to Blockade. Restoring all external LUs in an external disk array (Check Paths & Restore Vol.) 1. In the LU Operation tab, click External Devices in the Device Tree (left pane).
6. Click Yes or No. • If you click Yes, a confirmation message appears. To cancel the operation, click Cancel. Otherwise go to step 8. • If you click No, a warning message appears asking if you really want to execute the Delete LU operation without first flushing data in XP10000/XP12000 cache memory to the external LU. To cancel the operation, click Cancel.
For more information about RAID Manager and command devices, see the HP StorageWorks RAID Manager XP User Guide.
As you select an external volume group number in the Device Tree on the LU Operation pane, the information shown in Table 7 appears.
• External Storage XP’s Discovery operation cannot identify remote command devices. • You cannot execute I/Os to remote command devices. • You cannot set command devices to disabled on remote command devices. • You cannot set command devices’ security on remote command devices. • Do not set command devices’ security on the external disk array side for command devices mapped as remote command devices. • You cannot create LUSE volumes using remote command devices.
Table 9 General External Storage XP troubleshooting (continued) Error Corrective action The external LU cannot be mapped as an internal XP LDEV of the local disk array. Correct the error and retry the operation. The source of the error could be any of the following: • • The path to the external LU is blocked. The number of mapped external LUs exceeds the maximum number (15,360 LUs for XP12000 or 8,192 LUs for XP10000) available for the local disk array.
Table 9 General External Storage XP troubleshooting (continued) Error Corrective action LDEV size reduced Status: The volume capacity setting of the external disk array changed (was reduced). Corrective action: Check the volume capacity of the external disk array’s LU. Execute the Delete LU operation, and execute the Add LU operation. Not ready Status: The external disk array’s LU is currently being formatted. Corrective action: Wait until the formatting finishes.
Table 9 General External Storage XP troubleshooting (continued) Error Corrective action Initiator port Status: The port attribute of the external (for example, XP) disk array was changed to Initiator. Corrective action: Set the port attribute of the external disk array back to target. If you cannot restore the path, contact your HP Account Support Representative. RCU target port Status: The port attribute of the external disk array changed to RCU target.
Table 9 General External Storage XP troubleshooting (continued) Error Corrective action The Discovery operation cannot be performed. Correct the error and retry the operation. The source of the error could be one of the following: • • • • • • • • • Command View XP or XP Remote Web Console is not in Modify mode. The local disk array port and external disk array port are not connected using FC cables. Port security is improperly set on the external disk array.
Table 10 System parameter settings (Thunder 9500V Series subsystem) (continued) Pane name Parameter Parameter setting Data Striping Operation if the processor failure occurs Set this parameter to Reset of occurred. Inquiry Setting Command Queuing Mode Set this parameter to ON. Vendor ID Keep this parameter as HITACHI (default), and do not change. Product ID Keep this parameter as DF600 (default), and do not change.
Table 11 System parameter settings (TagmaStore AMS and TagmaStore WMS) Pane name Parameters Boot Options Start Attribute Parameter setting • Single Mode Specify this parameter when the TagmaStore AMS or TagmaStore WMS subsystem is in the one-controller configuration. • Dual Active Mode Specify this parameter when the TagmaStore AMS or TagmaStore WMS subsystem is in the two-controller configuration. NOTE: Be sure to specify that Data Share Mode will be used.
Lightning 9900 Series subsystem When connecting a Lightning 9900 Series subsystem as the external disk array, you must set the port’s host mode to PC Server (0C). Also, the port attribute must be the target or RCU target port. Required volume capacity for emulation types When you map an external LU as a local disk array internal XP LDEV, you must specify the XP10000/XP12000 emulation type for the mapped LU.
Figure 44 shows how to calculate the LU capacity for OPEN-3 emulation. For open systems, the most used emulation type is OPEN-V. Figure 44 Calculating LU capacity (OPEN-3 example) Each emulation type has certain minimum and maximum capacities (see Table 14 on page 84): • Base LDEV capacity (4,818,240 in the OPEN-3 example). When the external LU’s capacity is less than the emulation type’s base LDEV capacity, a Customized Volume (CV) is created when mapping the volume.
According to these restrictions, you can calculate the external volume’s maximum usable capacity for each emulation type. When the mapped external volume’s capacity is more than the specified emulation type’s maximum capacity, a certain part of the external volume cannot be used. The minimum data area capacity, base data area capacity, and control information area capacity for each emulation type are listed in Table 13. For the OPEN-L emulation type, CVs cannot be created.
Table 13 LDEV capacity information for emulation types (continued) Emulation type Minimum data area capacity (blocks) Base data area capacity (blocks) Control information area capacity (blocks) 3390-9B 87,000 17,429,580 43,500 3390-9C 87,000 17,429,580 43,500 3390-M 87,000 114,004,800 92,220 3390-MA 87,000 114,004,800 92,220 3390-MB 87,000 114,004,800 92,220 3390-MC 87,000 114,004,800 92,220 As shown in Table 14, base and minimum LDEV capacities are the same for the OPEN-L and
Table 14 Volume capacity information for emulation types (continued) Emulation type Base LDEV capacity (blocks) Minimum LDEV capacity (blocks) Maximum capacity Maximum number of external LU of LDEVs when (blocks) maximum capacity of external LU is mapped OPEN-3 4,818,240 83,520 1,207,934,976 250 OPEN-E 28,480,320 99,360 1,207,934,976 42 OPEN-8 14,389,920 110,880 1,207,934,976 83 OPEN-9 14,461,920 110,880 1,207,934,976 83 3380-KA 3,833,280 82,080 981,319,680 256 6586-KA 3,833,
Table 14 Volume capacity information for emulation types (continued) Emulation type Base LDEV capacity (blocks) Minimum LDEV capacity (blocks) Maximum capacity Maximum number of external LU of LDEVs when (blocks) maximum capacity of external LU is mapped 3390-M 114,097,020 179,220 1,459,588,096 12 3390-MA 114,097,020 179,220 1,459,588,096 12 3390-MB 114,097,020 179,220 1,459,588,096 12 3390-MC 114,097,020 179,220 1,459,588,096 12 Description for Characteristic2 When the connected e
2. Select the disk array volume (C) with the same capacity as the mapped internal volume (B) or a bigger capacity than the mapped internal volume (B). The volume’s (C) emulation type must be OPEN-V. 3. If you select the disk array volume (C) with a bigger capacity than the mapped internal volume (B), create the CV with the same capacity as the mapped internal volume (B) out of the disk array volume (C) using Volume Management.
3. Create a copy pair. Figure 47 Copying data to external disk arrays (setting external volumes as S-VOLs) Additional information about TagmaStore AMS, TagmaStore WMS, and Thunder 9500V Series subsystems Relationship between serial number and subsystem model When the external disk array is a TagmaStore AMS, TagmaStore WMS, or Thunder 9500V Series subsystem, you can identify the disk array model from the serial number displayed in the Serial column in the Device List on the LU Operation pane.
Table 16 Relationship between port’s WWN and controller (continued) Model Controller Port WWN1 9570V Controller 0 XXXXXXXXXXXXXXX0 9530V 9520V XXXXXXXXXXXXXXX1 Controller 1 AMS 500 9580V XXXXXXXXXXXXXXX2 XXXXXXXXXXXXXXX3 Controller 0 XXXXXXXXXXXXXXX0 9585V XXXXXXXXXXXXXXX1 AMS 1000 XXXXXXXXXXXXXXX2 XXXXXXXXXXXXXXX3 Controller 1 XXXXXXXXXXXXXXX4 XXXXXXXXXXXXXXX5 XXXXXXXXXXXXXXX6 XXXXXXXXXXXXXXX7 1. In WWN, X is an arbitrary number or character.
External Storage XP for the XP10000/XP12000
A Using XP12000 disk arrays with EVA GL disk arrays attached as subordinated external storage disk arrays Preface This appendix describes the procedure and relevant recommendations for configuring HP StorageWorks XP12000 and EVA GL (EVA3000 or 5000) disk arrays where the EVA is used as a highly available external storage disk array. For the XP12000 to properly manage highly available (HA) connectivity to an EVA GL disk array, the XP12000 and EVA must have firmware versions 50-04-28-00/00 or later and v3.
Minimum physical configuration for HA For highly available (HA) functionality to be possible, each EVA controller must be connected to the XP12000 so there is at least one fiber channel path from each XP12000 cluster to one of the separate EVA controllers through their respective fibre channel switch connections. Figure 48 illustrates this connection.
more than one XP port can drive a single active EVA port to a particular EVA LU.1 An example of this configuration is illustrated in Figure 49. Figure 49 XP12000-EVA connections for expanded performance Creating new EVA host objects for the XP12000 The EVA family of disk arrays organizes its LU presentations to attached hosts by defining and manipulating host objects.
external port. Additionally, set Host OS to Microsoft Windows for the XP12000 to use the EVA LUs correctly. Figure 50 illustrates this step. Figure 50 Creating EVA host objects After the host object is created, add the remaining XP12000 external ports by selecting the new host object, and clicking the Ports tab. For each port, enter the world wide port name, and click Add Port. Figure 51 illustrates this step.
HP recommends defining Vdisk settings so the number of Vdisks presented to the XP is balanced between the two EVA controllers and across controller ports. Figure 52 Selecting Vdisk’s Preferred path/mode After EVA Vdisks are created, they can be assigned to the previously defined XP12000 host object; thereby presenting them to the XP12000. Figure 53 illustrates this step.
Operation pane in External Storage, right-click on the desired ports, and select Change to External. Figure 54 illustrates this step. Figure 54 Defining XP12000 external ports After external ports are defined, EVA LUs presented to the XP12000 can be defined as XP external storage LDEVs. Defining XP12000 external storage LDEVs Use Command View XP or XP Remote Web Console to define external storage LDEVs.
NOTE: You must select external storage LUs through the presenting controller. Failure to do so results in new external LDEVs being placed in a blockade state shortly after a host attempts to access them. Figure 55 Selecting EVA LUs After you select an external logical unit (LU), the Add LU pane appears. At this point, you can configure each individual external LU by choosing options such as the emulation type, the number of LDEVs (CVS is used), and the LU’s unique LDEV identifiers within the XP12000.
XP12000-attached host, see the HP StorageWorks Command View XP User Guide for XP Disk Arrays or the HP StorageWorks XP Remote Web console User Guide for XP12000/XP10000. Configuring MSA1000/1500 as external disk arrays Connecting MSA1000/1500 If you connect an HP StorageWorks Modular Smart Array (MSA) with two controllers as an external disk array (highly recommended), set the port’s host mode to Tru64 and use Selective Storage Presentation.
The MSA Disk Array does not require any special firmware level or hardware additive to be usable by External Storage XP as long as the firmware level in use supports the appropriate host mode setting (for example, Windows or Tru64). NOTE: Download the ACU and ACU Online User Guide from the following address: http://h18004.www1.hp.com/products/servers/proliantstorage/software-management/acumatrix/inde x.
optimization algorithm the ACU uses can be compensated for by specifying a size of 40963 MB, which results in the correct size of 40960 MB (40 GB). Figure 59 Defining MSA LUs with ACU Selective Storage Presentation You must institute LUN security on MSAs using the ACU Selective Storage Presentation (SSP) feature (Figure 60). Use SSP to limit access to individual MSA LUs (in this case, logical drives 1 and 2) by selected host (or XP10000/XP12000) HBA world wide names.
HP strongly cautions you to carefully weigh the financial cost of a dedicated XP12000 external port versus the benefit of any added EVA external storage performance. For firmware revisions specified in ”Preface” on page 91, a host-connected EVA port can out-perform an external storage-connected XP12000 external port by an estimated ratio of as much as 4 to1 when the number of usable I/O operations per second (IOPS) is considered.
Using XP12000 disk arrays with EVA GL disk arrays attached as subordinated external storage disk arrays
Index A ACU (Array Configuration Utility) 98, 99 ACU Selective Storage Presentation (SSP) 100 Add LU operation 52 Add LU window 46 alternate paths adding to multiple external LUs 61 canceling 61 changing 61 defining 12, 57, 59 deleting to multiple external LUs 63 Path Setting window 57 priority of 60 specifying candidates 48 switching I/O execution paths to 14 XP12000-EVA GL disk arrays 101 applications, combining External Storage XP with 22 Array Configuration Utility (ACU) 98, 99 attributes 27, 30 audienc
LU Operation pane 33 mapping 11, 29, 45 maximum number of 24 non-sequential mapping 54 restoring 66 size limitations 26 status 65 troubleshooting 74, 75 using data in 20 Volume Detail window 67 Volume Migration 21 writing data to 19 External port setting 29 external ports, defining 95 external storage LDEVs, defining 96 F features 11 Fibre Channel switches supported 24 Filter button 38 firmware versions 8 G group number 47, 50 groups, external LUs 30 H HA (highly available) functionality requirements 92
size limitations 26 P Path Setting window 57 Port List 40 Port Operation pane 39 Port Tree 40 ports list of 40 local disk array settings 44 settings 29, 39 powering off disk arrays 31, 32 prerequisites 7 Preset list 38, 41 primary path 13 priority of alternate paths, changing 60 R RAID manager 56 related documentation 8 remote command devices defined 71 mapping as 74 specifications 72 restoring external LUs 66 retention term 56 S SANtinel 28 Select LDEV window 52 Select Paths pane 48 Selective Storage Pr
