FS6200 Server System Implementation Guide - Public Support ...

Customizing the Server Configuration
The FS6200 Server also supports up to eight active I/Os to individual VSS disks. This
capability enables the FS6200 Server to potentially achieve improved I/O performance
when dividing disk families into fewer members. The number of LUNs needed for
satisfactory performance varies based on many factors, including the data access patterns
of your applications.
Refer to the ClearPath Enterprise Servers Server External Disk and Tape Storage Systems
Configuration Guide for detailed storage configuration guidance that must be followed
when configuring FS6200 Server disk and tape storage.
You use the System Editor of the MCP Console to create a peripheral configuration
diagram (PCD) that describes the FS6200 Server storage configuration. PCD creation is
fully automated on the FS6200 Server. You only need to select those devices that the MCP
is to use, optionally adjust the device numbers used to identify devices, and add
comments about the devices. Comments placed into the PCD are visible in some of the
MCP screen displays.
Reconfiguring VSS Disks
Some disks have formats other than the VSS formats supported by the MCP. For example,
disks can have an MBR/GPT format (used by Windows and Linux) or disks can be
unformatted.
When adding LUNs to the FS6200 Server to be used as VSS disks, do not set persistent
binding on the LUNs as is done for IOM systems using OCManager.
To add a LUN to the PCD for use as an MCP VSS disk:
1. If the disk is formatted as MBR/GPT, recreate or reinitialize the LUN using the storage
system interface.
2. Use the System Editor of the MCP Console to edit the active Peripheral Configuration
Diagram (PCD) and assign the disk to the MCP.
3. Commit the PCD change by setting it as the active PCD.
4. Acquire the disk by the MCP.
5. Use the INIT system command to format as VSS1 or VSS2.
6. You might need to OK a warning message if the disk is in MBR/GPT format.
To release a VSS disk to firmware use (not expected to be a frequent action)
1. PG PK NOLABEL.
2. Halt the MCP.
3. Edit the active PCD and unmark the disk so it is not assigned to the MCP.
4. Commit the updated PCD and start the MCP.
5. Use Disk Manager to format the disk.
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