HP StorageWorks Command Console V2.5 User Guide (AA-RV1UA-TE, March 2005)
Table Of Contents
- Contents
- About this Guide
- About SWCC
- Using Command Console
- Setting Up Notification
- Required Components for Notification
- Setting Up Pager Notification
- Using SWCC with a Third-Party Storage Management Program
- Using Event Logging on the Client System to Monitor Your Subsystem
- Interpreting Agent Email Messages
- About Event Information Fields
- Mapping State Change Digits to RAID System Components
- Table 11: State Change Digit Position and Corresponding RAID system Component
- The First Digit of the State Change Field (Overall RAID System)
- The Second Digit of the State Change Field (Disks)
- The Third Digit of the State Change Field (Power Supply)
- The Fourth Digit of the State Change Field (Fans)
- The Fifth Digit of the State Change Field (Battery)
- The Sixth Digit of the State Change Field (Temperature)
- The Seventh Digit of the State Change Field (This_Controller)
- The Eighth Digit of the State Change Field (Communications LUN)
- The Ninth Digit of the State Change Field (Other_Controller)
- The 10th Digit of the State Change Field (External Factors)
- The 11th Digit of the State Change Field (Logical Units)
- Using the Storage Window
- Why Use the Storage Window?
- Configuring a Controller
- Creating Virtual Disks
- Deleting Virtual Disks
- Modifying Virtual Disks
- Configuring the Operating System to Recognize Virtual Disk Changes
- Setting Passwords and Security Options (Network Only)
- Managing and Creating Spare Devices
- Using Configuration Files
- Understanding the Icons
- CLI Window
- Integrating SWCC with Insight Manager
- Troubleshooting
- Troubleshooting Connection Problems
- Invalid Network Port Numbers During Installation
- Network Port Assignments for UNIX-Client/Server Systems
- DHCP and WINS
- Connecting Via the Host SCSI Port
- “Access Denied” Message
- Adding New System by Using Internet Protocol Address May Cause Client to Stop Responding
- “No Agent Running” Message When Adding System to the Navigation Tree
- Troubleshooting the Client
- Authorization Error When Adding an Agent System
- Cannot Open Storage Window
- Client Hangs When LUN Is Deleted
- CLI RUN Commands
- Event Notification for Subsystems Connected to a Client System
- Invalid or Missing Fault Displays and Event Logs
- Pager Notification Continues After Exiting the Command Console Client
- Reconfiguration After Controller Replacement
- Some Graphics Do Not Scale Well with Large Fonts
- Starting Client from the Command Prompt
- Warning Message Windows
- Virtual Disk Recovery from a Configuration File
- Troubleshooting the HS-Series Agents
- Cluster Integration for the HS-Series Agents
- Troubleshooting Connection Problems
- Using the Command Console LUN
- Interpreting SNMP Traps
- Glossary
- Index
Glossary
143Command Console V2.5 User Guide
virtual disk A series of physical drives linked together so that the software
interprets the drives as being a single device. Logical storage
units are called virtual disks and are accessible by the host.
Each virtual disk has its own user-configurable parameters.
Some controllers use RAID techniques to provide virtual disks
with various cost, availability, and performance options.
Also called logical drives, volumes, volume sets, logical
storage units, logical units, units, and LUNs.
warm swap In some controllers, a feature that allows devices to be added,
removed, or replaced while the subsystem remains operational,
but with all activity on the controller's device buses stopped.
Wide Area Network
(WAN)
A network that spans a large geographic area.
write-back cache A cache configuration that increases the performance of host
write requests. If a host requests a write operation, the
controller writes the host's data first to the cache memory,
completing the request quickly. It performs the slower
operation of flushing data to the external storage device at a
later time. The host sees the write operation as complete when
the data reaches the cache.
For most controllers using write-back cache, the cache also
increases performance with read cache techniques.
write only A device state that indicates that while a member was being
reconstructed an error was found on another member of the
virtual disk.
write-through cache A technique for handling host write requests in read caches. If
the host requests a write operation, the controller writes data
directly to the external storage device and updates the cache
memory to ensure that the memory does not contain obsolete
data. This technique increases the chances that future host read
requests can be filled from the cache. The host sees the write
operation as complete only after the external storage device is
updated.
For some controller fault conditions, write-back cache resorts to
write-through cache operation to protect your data.