External RAID Controller & Subsystem Operation Manual
Table Of Contents
- Front Cover
- Chapter 1 RAID Functions: An Introduction
- Structured bookmarks
- 1.1 Logical Drive
- 1.2 Logical Volume
- 1.3 RAID Levels
- What are the RAID levels?
- NRAID
- JBOD
- RAID 0
- RAID 1
- RAID (0+1)
- RAID 3
- RAID 5
- 1.4 Spare Drives
- Global and Local Spare Drives
- 1.5 Identifying Drives
- Flash Selected SCSI Drive
- Flash All SCSI Drives
- Flash All but Selected Drives
- 1.6 Rebuild
- Automatic Rebuild and Manual Rebuild
- Automatic Rebuild
- Manual Rebuild
- Concurrent Rebuild in RAID (0+1)
- 1.7 Logical Volume (Multi-Level RAID)
- What is a logical volume?
- Spare drives assigned to a logical volume?
- Limitations:
- Partitioning - partitioning the logical drive or partitioning the logical volume?
- Different write policies within a logical volume?
- RAID expansion with logical volume?
- Different controller settings using logical volume?
- A logical volume with logical drives of different levels?
- Multi-level RAID systems
- Structured bookmarks
- Chapter 2 RAID Planning
- Chapter 3 Accessing the Array through Serial Port and Ethernet]
- Structured bookmarks
- 3.1 RS-232C Serial Port
- 3.1.1 Configuring RS-232C Connection via Front Panel
- 3.1.2 Starting RS-232C Terminal Emulation
- 3.2 Out-of-Band via Ethernet
- What Is the “Disk Reserved Space?”
- Other Concerns
- Web-Based Management
- Requirements
- 3.2.1 Connecting Ethernet Port:
- 3.2.2 Configuring the Controller
- 3.2.3 NPC Onboard
- The SNMP_TRAP section
- The EMAIL section
- The BROADCAST section
- Structured bookmarks
- Chapter 4 LCD Screen Messages
- Chapter 5 LCD Keypad Operation
- Structured bookmarks
- 5.1 Power on RAID Enclosure
- 5.2 Caching Parameters
- Optimization Modes
- Optimization Mode and Stripe Size
- Optimization for Random or Sequential I/O
- Write-Back/Write-Through Cache Enable/Disable
- 5.3 View Connected Drives:
- 5.4 Creating a Logical Drive
- Choosing a RAID Level:
- Choosing Member Drives:
- Logical Drive Preferences:
- Maximum Drive Capacity:
- Spare Drive Assignments:
- Disk Reserved Space:
- Write Policy:
- Initialization Mode:
- Stripe Size:
- 5.5 Creating a Logical Volume
- Initialization Mode
- Write Policy
- Logical Volume Assignment
- 5.6 Partitioning a Logical Drive/Logical Volume
- 5.7 Mapping a Logical Volume/Logical Drive to Host LUN
- 5.8 Assigning Spare Drive and Rebuild Settings
- Adding a Local Spare Drive
- Adding a Global Spare Drive
- Rebuild Settings
- 5.9 Viewing and Editing Logical Drives and Drive Members
- Deleting a Logical Drive
- Deleting a Partition of a Logical Drive
- Assigning a Name to a Logical Drive
- Rebuilding a Logical Drive
- Regenerating Logical Drive Parity
- Media Scan
- Write Policy
- 5.10 Viewing and Editing Host LUNs
- Viewing and Deleting LUN Mappings
- Pass-through SCSI Commands
- 5.11 Viewing and Editing SCSI Drives
- Scanning New SCSI Drive
- Identifying a Drive
- Deleting Spare Drive (Global / Local Spare Drive)
- 5.12 Viewing and Editing SCSI Channels
- Redefining Channel Mode
- Setting a SCSI Channel’s ID - Host Channel
- Viewing IDs
- Adding a Channel ID
- Deleting a Channel ID
- Setting a SCSI Channel’s Primary ID - Drive Channel
- Setting a SCSI Channel’s Secondary ID - Drive Channel
- Setting Channel Bus Terminator
- Setting Transfer Speed
- Setting Transfer Width
- Viewing and Editing SCSI Target - Drive Channel
- Slot Number
- Maximum Synchronous Transfer Clock
- Maximum Transfer Width
- Parity Check
- Disconnecting Support
- Maximum Tag Count
- Restore to Default Setting
- 5.13 System Functions
- Mute Beeper
- Change Password
- Changing Password
- Disabling Password
- Reset Controller
- Shutdown Controller
- Controller Maintenance
- Saving NVRAM to Disks
- Restore NVRAM from Disks
- 5.14 Controller Parameters
- Controller Name
- LCD Title Display Controller Name
- Password Validation Timeout
- Controller Unique Identifier
- Controller Date and Time
- Time Zone
- Date and Time
- SCSI Drive Low-level Format
- SCSI Drive Read/Write Test
- Structured bookmarks
- Chapter 6 Terminal Screen Messages
- Chapter 7 Terminal Operation
- Structured bookmarks
- 7.1 Power on RAID Enclosure
- 7.2 Caching Parameters
- Optimization Modes
- Optimization Mode and Stripe Size
- Optimization for Random or Sequential I/O
- Write-Back/Write-Through Cache Enable/Disable
- 7.3 Viewing the Connected Drives
- 7.4 Creating a Logical Drive
- Choosing a RAID Level:
- Choosing Member Drives:
- Logical Drive Preferences:
- Maximum Drive Capacity:
- Assign Spare Drives:
- Disk Reserved Space
- Logical Drive Assignments:
- Write Policy
- Initialization Mode
- Stripe Size
- 7.5 Creating a Logical Volume
- 7.6 Partitioning a Logical Drive/Logical Volume
- 7.7 Mapping a Logical Volume to Host LUN
- 7.8 Assigning Spare Drive, Rebuild Settings
- Adding Local Spare Drive
- Adding a Global Spare Drive
- 7.9 Viewing and Editing Logical Drive and Drive Members
- Deleting a Logical Drive
- Deleting a Partition of a Logical Drive
- Assigning a Name to a Logical Drive
- Rebuilding a Logical Drive
- Regenerating Logical Drive Parity
- Media Scan
- Write Policy
- 7.10 Viewing and Editing Host LUNs
- Viewing or Deleting LUN Mappings
- Edit Host-ID/WWN Name List
- Pass-through SCSI Commands
- 7.11 Viewing and Editing SCSI Drives
- Scanning New Drive
- Slot Number
- Drive Entry
- Identifying Drive
- Deleting Spare Drive (Global / Local Spare Drive)
- 7.12 Viewing and Editing SCSI Channels
- Redefining Channel Mode
- Viewing and Editing SCSI IDs - Host Channel
- Viewing and Editing SCSI IDs
- Adding a SCSI ID (Primary/Secondary Controller ID)
- Deleting an ID
- Setting a Primary Controller’s SCSI ID - Drive Channel
- Setting a Secondary Controller’s SCSI ID - Drive Channel
- Setting Channel Terminator
- Setting a Transfer Speed
- Drive Channel
- Setting the Transfer Width
- Viewing and Editing SCSI Target / Drive Channel
- Slot Number
- Maximum Synchronous Transfer Clock
- Maximum Transfer Width
- Parity Check
- Disconnecting Support
- Maximum Tag Count
- Data Rate
- 7.13 System Functions
- Mute Beeper
- Change Password
- Changing the Password
- Setting a New Password
- Disabling the Password
- Reset Controller
- Shutdown Controller
- 7.14 Controller Parameters
- Controller Name
- LCD Title Display Controller Name
- Saving NVRAM to Disks
- Restore NVRAM from Disks
- Password Validation Timeout
- Controller Unique Identifier
- Set Controller Date and Time
- Time Zone
- Date and Time
- 7.15 Drive Information
- View Drive Information
- SCSI Drive Utilities
- SCSI Drive Low-level Format
- SCSI Drive Read/Write Test
- Structured bookmarks
- Chapter 8 Fibre Operation
- Structured bookmarks
- 8.1 Overview
- 8.2 Major Concerns
- 8.3 Supported Features
- Fibre Chip
- Multiple Target IDs:
- Drive IDs:
- In-band Fibre and S.E.S. Support:
- 8.4 Configuration: Host and Drive Parameters
- Channel Mode:
- Primary and Secondary Controller IDs:
- Redundant Controller Cache Coherency Channel (RCC Channel):
- View Channel WWN
- View Device Port Name List (WWPN)
- View and Edit Fibre Drive
- User-Assigned ID (Scan SCSI Drive)
- View Drive Information
- View and Edit Host-Side Parameters
- 1. Fibre Channel Connection Type:
- View and Edit Drive-Side Parameters
- 2. Drive-Side Dual Loop:
- Controller Unique Identifier
- Controller Communications over Fibre Loops
- 8.5 Multi-Host Access Control: LUN Filtering
- Creating LUN Masks
- WWN Name List
- Logical Unit to Host LUN Mapping
- LUN Mask (ID Range) Configuration:
- Filter Type: Include or Exclude
- Access Mode: Read Only or Read/Write
- Sample Configuration:
- Configuration Procedure:
- Structured bookmarks
- Chapter 9 Advanced Configurations
- Structured bookmarks
- 9.1 Fault Prevention
- S.M.A.R.T.
- 9.1.1 Clone Failing Drive:
- Replace after Clone:
- Perpetual Clone:
- 9.1.2 S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology )
- Configuration Procedure
- Enabling the S.M.A.R.T. Feature
- Examining Whether Your Drives Support S.M.A.R.T.
- Using S.M.A.R.T. Functions
- 9.2 Host-side and Drive-side SCSI Parameters
- Foreword: SCSI Channel, SCSI ID and LUN
- 9.2.1 Host-side SCSI Parameters
- Maximum Concurrent Host LUN Connection (“Nexus” in SCSI):
- Number of Tags Reserved for each Host-LUN Connection:
- Maximum Queued I/O Count:
- LUNs per Host SCSI ID
- LUN Applicability:
- Peripheral Device Type:
- In-band (SCSI or Fibre):
- Peripheral Device Type Parameters for Various Operating Systems:
- Cylinder/Head/Sector Mapping:
- 9.2.2 Drive-side Parameters:
- SCSI Motor Spin-Up
- SCSI Reset at Power-Up
- Disk Access Delay Time
- SCSI I/O Timeout
- Maximum Tag Count (Tag Command Queuing)
- Detection of Drive Hot Swap Followed by Auto Rebuild
- SAF-TE and S.E.S. Enclosure Monitoring
- Periodic Drive Check Time
- Idle Drive Failure Detection
- Periodic Auto-Detect Failure Drive Swap Check Time
- 9.3 Monitoring and Safety Mechanisms
- Dynamic Switch Write-Policy
- View Peripheral Device Status
- Controller Auto-Shutdown - Event Trigger Option
- 9.4 Disk Array Parameters
- Rebuild Priority
- Verification on Writes
- Structured bookmarks
- Chapter 10 Redundant Controller
- Structured bookmarks
- 10.1 Operation Theory
- 10.1.1 Setup Flowchart
- 10.1.2 Considerations Related to Physical Connection
- SCSI-Based Controllers
- Fibre-Based Controllers
- 10.1.3 Grouping Hard Drives and LUN Mapping
- Logical Drive, Logical Volume, and Logical Partitions
- System Drive Mapping:
- Primary and Secondary IDs
- Mapping
- 10.1.4 Fault-Tolerance
- What Is a Redundant Controller Configuration?
- How does Failover and Failback Work?
- A. Channel Bus
- B. Controller Failover and Failback
- C. Active-to-Active Configuration:
- D. Traffic Distribution and Failover Process
- Symptoms
- Connection:
- 10.2 Preparing Controllers
- 10.2.1 Requirements:
- Cabling Requirements:
- Controller Settings:
- 10.2.2 Limitations
- 10.2.3 Configurable Parameters
- Primary or Secondary
- Active-to-Active Configuration
- Active-to-Standby Configuration
- Cache Synchronization
- Battery Support
- 10.3 Configuration
- 10.3.1 Via Front Panel Keypad
- Redundant Configuration Using Automatic Setting
- Enable Redundant Controller
- Autoconfig.
- Controller Unique ID
- Redundant Configuration Using Manual Setting
- 2. Controller Unique ID
- Starting the Redundant Controllers
- Creating Primary and Secondary ID
- Drive Channel
- Host Channel
- Assigning a Logical Drive/Logical Volume to the Secondary Controller
- Mapping a Logical Drive/Logical Volume to the Host LUNs
- Front Panel View of Controller Failure
- When and how is the failed controller replaced?
- 10.3.2 Via Terminal Emulation
- Redundant Configuration Using Automatic Setting
- Redundant Configuration Using Manual Setting
- Creating Primary and Secondary ID
- Assigning Logical Drives to the Secondary Controller
- Mapping a Logical Drive/Logical Volume to the Host LUNs
- Terminal Interface View of Controller Failure
- What will happen when one of the controllers fails?
- 10.3.3 When and How Is the Failed Controller Replaced?
- Forcing Controller Failover for Testing
- RCC Status (Redundant Controller Communications Channel)
- Secondary Controller RS-232
- Remote Redundant Controller
- Cache Synchronization on Write-Through
- Structured bookmarks
- Chapter 11 Record of Settings
- Structured bookmarks
- 11.1 View and Edit Logical Drives
- 11.2 View and Edit Logical Volumes
- 11.3 View and Edit Host LUN’s
- 11.4 View and Edit SCSI Drives
- 11.5 View and Edit SCSI Channels
- 11.6 View and Edit Configuration Parameters
- 11.7 View and Edit Peripheral Devices
- Set Peripheral Device Entry
- Define Peripheral Device Active Signal
- View System Information
- 11.8 Save NVRAM to Disk, Restore from Disk
- 11.9 RAID Security: Password
- Structured bookmarks
- Chapter 12 Array Expansion
- Structured bookmarks
- 12.1 Overview
- Note on Expansion
- 12.2 Mode 1 Expansion:
- Adding Drives to a Logical Drive
- Add-Drive Procedure
- 12.3 Mode 2 Expansion:
- Copy and Replace Drives with Drives of Larger Capacity
- Copy and Replace Procedure
- 12.4 Making Use of the Added Capacity: Expand Logical Drive
- 12.5 Expand Logical Volume
- 12.6 Configuration Example: Volume Extension in Windows 2000® Server
- Limitations When Using Windows 2000
- Example:
- Structured bookmarks
- Appendix A LCD Keypad Navigation Map
- Appendix B Firmware Functionality Specifications
- Appendix C System Functions: Upgrading Firmware
- Structured bookmarks
- Upgrading Firmware
- New Features Supported with Firmware 3.21
- Background RS-232C Firmware Download:
- Redundant Controller Rolling Firmware Upgrade:
- Redundant Controller Firmware Sync-version:
- Upgrading Firmware Using In-band SCSI + RAIDWatch Manager
- Establish the In-band SCSI connection in RAIDWatch Manager
- Upgrade Both Boot Record and Firmware Binaries
- Upgrade the Firmware Binary Only
- Upgrading Firmware Using RS-232C Terminal Emulation
- Establishing the connection for the RS-232C Terminal Emulation
- Upgrading Both Boot Record and Firmware Binaries
- Upgrading the Firmware Binary Only
- Structured bookmarks
- Appendix D Event Messages
- Index
Fibre Operation
8-13
2.
Communications Traffic Distributed over All Drive
Loops
: Select all drive loops and configure them as "Drive
+ RCCOM (Drive Loops plus Redundant Controller
Communications)." The communications traffic between
the two controllers will be automatically distributed over
all drive loops.
!
As displayed above, channel(s) selected as the
communications paths will be displayed as "channel
number (C: connected)" or "channel number (D:
disconnected)." If channels configured in a dual-loop are
selected, channel status will be displayed as "channel
number (pair loop; C or D)."
!
If any of the communications loops should fail, the inter-
controller traffic will be automatically shifted to the
remaining Drive/RCC loop(s).