CLI Guide

● no-affinity: This setting uses the highest available performing tiers first and only uses the
Archive tier when space is exhausted in the other tiers. Volume data will swap into higher
performing tiers based on frequency of access and tier space availability. This is the default.
● archive: This setting prioritizes the volume data to the least performing tier available. Volume
data can move to higher performing tiers based on frequency of access and available space in the
tiers.
● performance: This setting prioritizes volume data to the higher performing tiers. If no space
is available, lower performing tier space is used. Performance affinity volume data will swap into
higher tiers based upon frequency of access or when space is made available.
volume
The name or serial number of the volume to change. A name that includes a space must be enclosed
in double quotes.
Examples Rename volume Vol1 to Vol2.
# set volume name Vol2 Vol1
Set identifying information for Vol3.
# set volume identifying-information "Project X data" Vol3
Set volume OldFiles to have affinity for the Archive tier.
# set volume tier-affinity archive OldFiles
Change the snapshot retention priority for Vol1 to low.
# set volume snapshot-retention-priority low Vol1
See also
show maps
show volumes
set volume-cache-parameters
Description
Sets cache options for a specified volume or specified volumes.
NOTE: Only change the read-ahead cache settings if you fully understand how the host
operating system, application, and adapter move data so that you can adjust the settings
accordingly. Be prepared to monitor system performance and adjust read-ahead size until you
find the optimal size for your application.
CAUTION: Changing the cache optimization setting while I/O is active can cause data
corruption or loss. Before changing this setting, quiesce I/O from all initiators.
Minimum role manage
Syntax
set volume-cache-parameters
[optimization standard|no-mirror]
[read-ahead-size disabled|adaptive|stripe|512KB|1MB|2MB|4MB|8MB|16MB|
32MB]
[write-policy write-back|write-through|wb|wt]
volume |all
Parameters
[optimization standard|no-mirror]
Optional. Sets the cache optimization mode:
● standard: This controller cache mode of operation is optimized for sequential and random I/O
and is the optimization of choice for most workloads. In this mode, the cache is kept coherent
with the partner controller. This mode gives you high performance and high redundancy. This is
the default.
Alphabetical list of commands 163