HP Surestore Disk Array 12h Storage Manager 60-NT User’s Guide - Page 119
Access Volume disabled with NVSRAM
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Operating on Microsoft Windows Restriction Workaround After installing the Host-Agent software, you see an error message with "Service Error 100" on the host. Causes include: The Host-Agent software does not find any controllers with firmware version 4.x. Controllers with firmware version 4.x have the Access Volume disabled with NVSRAM configuration settings. The NVSRAM on controllers in a Storage Array you are attempting to manage contains an Access Volume logical unit number that is already in use by another volume. A possibility of file system corruption exists when resources are moved back and forth multiple times between cluster nodes using Microsoft Cluster Server running under Windows 2000 Advanced Server. When the cluster resource is moved, the owning node flushes cache and then releases the reservation to the volume(s). The other node then reserves the volume(s). In some instances, file system reads and writes do not finish before the release. This results in a reservation conflict and file system corruption. Trying to recover using the chkdsk command causes the file system information to be corrected in such a way that some files are no longer accessible. The NVSRAM on controllers in a Storage Array you are attempting to manage contains an Access Volume logical unit number that is not supported by the operating system and installed patches. For example, the Access Volume is configured at LUN 32, but the operating system and service packs only support 8 LUNs. None. The problem is highly unlikely to occur during normal failover situations. 119
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