HP StorageWorks 3000/5000 Enterprise Virtual Array connectivity 4.1A for Windows release notes (5697-7038, November 2007)

Error: Invalid Operation
Disk resource Pending Timeout for large configurations
To ensure continuous o p eration of disk resources across a SAN with disk resource counts g reater than 8,
HP recommends that you increase the Pending Timeout value for each disk resource from 180 seconds
to 360 seconds
.
To view and set the Pending Timeout value:
1. Open the Microsoft Cluster Administrator.
2. Select a disk resource in the left pane.
3. One at a time,
right-click each disk resource in the right pane and select Properties.
4. Click the Advanced tab on the Properties menu.
5. Change the Pending Timeout value to 360.
6. Click OK .
Host server considerations
This section provides important information about the host server.
Windows 2000 and Windows Server 2003 considerations
Drive-let
ter remapping can occur in the following situations and can affect data access.
• Replacing one server with another
• Replacing an FCA in one of your systems
During a se
rver or adapter changeover, use Disk M anager to manually remap drives to drive
letters. This restores proper access to your data.
When you replace an FCA in a server, you must reinstall the adapter driver. Windows 2000
and Window
s Ser ver 2003 automatically reload the original adapter driver and reset important
registr y settings. New connections are created on the HSV controller. Assign the new WWN s to
the appropriate host.
Registry growth in Windows
The Windows plug-and-play feature limits the number of plug-and-play devices that are added or removed
from the registry. When you add or remove devices, or create or delete snapshots, the plug-and-play
manager adds entries to the registry, which can cause the registry to exceed the allowed capacity.
If the reg istr y contains more tha n 700 entries, the next time the system reboots, the following error
message appears: Failed to load Windows 2000 due to a file missing or corrupt
in the \WINNT\SYSTEM32\CONFIG\SYSTEM directory.
SeetheMicrosoftKnowledgeBasearticle(Q269075)formoreinformationabouttheregistrygrowthissue.
Known li
mitations for large LUNs in Windows 2000
In Wind
ows 2 0 00 , if you remove any logical unit number (LUN) greater than 7, and then you perform a
subseq
uent d isk scan, the Found New H ardware wizard may ask you to finish installing the device that
was removed. The D evice Manager may display the device with a yellow warning icon. Reboot the
system to remove the device.
Windows 2 000 dynamic disk snapshots and snapclones
The Windows 2000 environment does not support the use of snapshots and snapclones in HP SANs if the
snapshot or snapclone is presented to the same host as the LUN from which the snapshot or s napclone
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