CLI Guide

WR Policy
Shown by the details parameter. The cache write policy:
● write-back: Write-back caching does not wait for data to be completely written to disk before
signaling the host that the write is complete. This is the preferred setting for a fault-tolerant
environment because it improves the performance of write operations and throughput.
● write-through: Write-through caching significantly impacts performance by waiting for data
to be completely written to disk before signaling the host that the write is complete. Use this
setting only when operating in an environment with low or no fault tolerance.
WWN
Shown by the details parameter. The World Wide Name of the volume
Examples Show about all volumes.
# show volumes
Show detailed information for volume volA.
# show volumes details volA
Show volumes whose names start with Vol followed by any single character, an underscore, and a
two-digit number — such as VolA_01 or Vol3_10, but not volA_01 or Vol3_1.
# show volumes pattern Vol?_[0-9][0-9]
Basetypes
volumes
status
See also
create volume
delete volumes
expand volume
set volume
show disk-groups
show maps
show pools
show vdisks
shutdown
Description
Shuts down the Storage Controller in a controller module. This ensures that a proper failover
sequence is used, which includes stopping all I/O operations and writing any data in write cache
to disk.
CAUTION: Performing a shut down will cause data to be unavailable from the Storage
Controller that is shut down. If the Storage Controller in each controller module is shut
down, hosts cannot access the system’s data.
Minimum role manage
Syntax
Shutdown
[a|b|both]
Parameters
a|b|both
Optional. Specifies to shut down the Storage Controller in controller A, B, or both. If this parameter is
omitted, the command affects the controller being accessed.
Examples Shut down the Storage Controller in controller A.
# shutdown a
Alphabetical list of commands 273