GRASS VALLEY K2 SAN, Installation And Service Manual

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7. Cable and configure the Expansion Chassis.
8. Power up the RAID storage devices. Verify that they stabilize in an operational state with no
errors indicated.
9. Start up the K2 SAN.
10. Bind the RANKs in the Expansions Chassis using Background Bind.
11. When binding is complete, put the K2 SAN in an offline state as follows:
a) You must access Storage Utility (via the K2Config application login) with permissions
equivalent to K2 administrator or higher.
b) When you access Storage Utility, the K2 SAN must be offline.
c) All iSCSI clients and K2 clients in the K2 SAN must be shut down.
12. Restart all K2 Media Servers. Do not use the standard startup processes here. Just start up the
server(s) and wait until the Windows desktop appears. Especially do not use Server Control Panel
or start Failover Monitor.
13. In Storage Utility, select
Tools | Expand File System By Capacity
.
The first of a series of informational screens opens.
14. Work through the informational screens to verify information. When the option to retry becomes
available, if the new disks are not labeled correctly, retry to start the process. If you are not sure,
you can retry to be sure. Doing so does not cause problems.
15. A message box reports progress. When a message reports success, the process is complete.
16. Restart the K2 SAN.
17. If a redundant K2 SAN, test failover capabilities.
Expanding the media file system by bandwidth
If you want to retain your media file system and yet expand the bandwidth of your K2 SAN, you
must use the following procedures for dynamic bandwidth expansion. This process allows you to
add RANKs to the stripe group, thereby expanding its width, without reinitializing the file system.
This keeps the existing media intact. The additional RANKs can be made up of new disks in existing
RAID chassis, disks in new Expansion Chassis, or disks in new primary RAID chassis.
After the file system is expanded, existing media is still striped across the original narrower stripe
group, so it can not take advantage of the increased bandwidth. Also, if there is a significant portion
of the storage pool occupied by this existing media, its presence reduces the extent to which new
media can use the increased bandwidth. For this reason the dynamic bandwidth expansion process
provides the Restripe Utility, which restripes the existing media across the new wider stripe group.
This enables both the existing media and new media to get full benefit of the increased bandwidth.
If the media on your file system has a high turnover rate and you know existing media is to be deleted
soon, you have the option of disabling the Restripe Utility. This saves the system resources and time
required to restripe media.
The expansion chassis that you add to your K2 SAN must have unbound, unlabeled disks. If it
currently has disks bound or labeled, connecting it to your system can cause errors.
Dynamic bandwidth expansion is supported only with K2 system software version 3.2 and higher.
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Administering and maintaining the K2 SAN