Windows 2000 And Windows Server - HP 4000/6000/8000 Release Note

Host server considerations
This section provides important information about the host servers.

Windows 2000 and Windows Server 2003

Drive-letter remapping can occur in the following situations and can affect data access:
• Replacing one server with another
• Replacing a Fibre Channel adapter in a server
During a server or adapter replacement, use Disk Manager to manually remap drives to drive letters.
This restores access to your data.
When you replace a Fibre Channel adapter in a server, you must reinstall the HBA driver. Windows
2000 and Windows Server 2003 automatically reload the original driver, reset registry settings, and
create new connections on the HSV controller. Assign the new World Wide Names (WWNs) to the
appropriate server.
Registry growth in Windows
The Windows plug-and-play architecture limits the number of plug-and-play devices that you can add or
remove from the registry. When you add or remove devices, or create snapshots, the plug-and-play
manager adds entries to the registry.
If the registry contains more than 700 entries, the next time the system reboots, the following error
message is displayed: Failed to load Windows 2000 due to a file missing or
corrupt in the \WINNT\SYSTEM32\CONFIG\SYSTEM directory.
See Microsoft Knowledge Base article (269075) for more information about registry growth.
Known limitations for large LUNs in Windows 2000
In Windows 2000, if you remove a logical unit number (LUN) greater than 7, and then perform a disk
scan, the Found New Hardware wizard may ask you to finish installing the device that was removed.
The Device Manager may display the device with a yellow warning icon. Reboot the system to remove
the device.
Windows 2000 dynamic disk snapshots and snapclones
Windows 2000 does not support the use of snapshots or snapclones in HP SANs if you present the
snapshot or snapclone to the same Windows 2000 host as the LUN from which it was created. Snapshot
and snapclone are features of the HSG80 and HSV controller-based HP storage systems. All dynamic
disks on a system have information in their metadata about the other dynamic disks that exist on the
system. When Windows encounters two dynamic disks with the same information, it cannot resolve
the conflict.
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