Unbind - Silicon Graphics CHALLENGE RAID Owner's Manual

unbind

You can change the cache size, the cache page size values, or the type of
caching for any physical disk unit without affecting the information stored
on it. Follow these steps:
1. Disable the cache:
raid5 -d device setcache 0
2. Wait for the cache memory to be written to disk, which may take
several minutes.
3. Reassign cache size and re-enable caching:
raid5 -d device setcache 1 -u 64 [parameters]
Before changing a cache parameter, you must always disable the
Note:
cache.
The following example enables the system cache with an 8 MB cache
partitioned into 8 KB pages, with a 50% low watermark value and a 75%
high watermark value.
setcache -d sc4d2l0 1 -u 8 -p 8 -l 50 -h 75
The unbind parameter deconfigures physical disks from their current logical
configuration into LUNs.
Caution: This parameter destroys all data on the LUN (disk group). For
complete messages, it is recommended that you use the
You must be root to use this parameter. For complete messages, it is
Note:
recommended that you use the
To unbind disks, use
raid5 -d device unbind lun-number [-o]
option.
-v
unbind
option.
-v
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