v1.6.0 - HP StorageWorks NAS 8000 - Release Notes

LUN Management
• Do not use another storage array management tool, such as Command View SDM, to delete
LUNs associated with NAS 8000 volume groups. Once a volume group is created and
associated with a LUN, it is recognized by the NAS 8000 user interface, and must be managed
from it to ensure that you do not lose data.
• If a user accidentally deletes a LUN that was associated with a volume group, and the user
decides to reformat the dedicated-attached array using a text command, the user must follow
these steps:
1. Delete the remaining LUNs on the storage array.
2. Reboot the NAS 8000 server.
3. Execute the following command:
recoverSystemStorageDedicatedAttachConfig
This command will re-create the LUNs, volume groups, and volumes that were previously
being used, prior to the accidental LUN deletion. Caution: Deleting LUNs irreversibly
erases data; use extreme care to avoid data loss.
• As an alternative method to recover from an accidentally deleted LUN, the user may want to
consider deleting the rest of the LUNs in that volume group - leaving the other volume groups and
LUNs alone. In this case, the user should follow these steps:
1. Delete the remaining LUNs.
2. Reboot the NAS 8000 server.
3. Execute the following command:
recoverSystemStorageRegistryConfig
This will recover all storage, except for the volume groups and volumes that were attached to
the deleted LUNs.
4. Manually recreate the deleted LUNs, volume groups, and volumes.
This method preserves most of the user's data - as opposed to wiping out all LUNs by using
recoverSystemStorageDedicatedAttachConfig.
Volume Group Path Management
• The Test Selected Path menu item on the Volume Group Action menu may not be visible if
you’ve just enabled Data Path Manager in the Applications Tab. If this item is not visible, restart
the browser session and then it will be visible.
• If you choose Test Selected Path and it fails with an error message that says “Handle Existence
Exception”, you can fix the problem by navigating to the Storage tab, Storage Array Summary
page and selecting Actions > Scan for New Storage. Once the scan is completed, Test
Selected Path will work properly.
NFS Performance
• The Linux NFS client implementation in the 2.4.x kernels has a flaw when writing files of size
1024 KB or greater. The NFS caching code in the Linux NFS client is hindered, and the
performance drops to the level of a round trip to the storage subsystem. Testing performed with
HP-UX clients against Linux NFS servers running NFS v3 does not show this flaw.
Insight Manager
• Information about the Emulex Host Bus Adapters (HBAs) is not accessible from the Insight
Manager. However, detailed information about the Emulex HBAs can be retrieved by executing
the following text command:
invokeSystemTool lpfctool –hba –info
• The agents for Insight Manager do provide information about the state of the NAS hardware
platform, including the system board, main memory, I/O boards, and peripheral devices. The
Insight Manager can be accessed from the Status tab, or through a web browser at:
http://<nas machine name_or_ip_address>:2301
HP StorageWorks NAS 8000
Version 1.6.0 Release Notes 6