128 Alphabetical list of commands
show cache-parameters
Description
Shows cache settings and status for the system and optionally for a volume.
Min. role
monitor
Syntax
show cache-parameters
[
volume
]
Parameters
volume
Optional. Name or serial number of the volume for which to show settings. A name that includes a
space must be enclosed in double quotes. If this parameter is not specified, only system-wide settings
are shown.
Output System cache parameters:
Operation Mode
Shows the system’s operating mode, also called the cache redundancy mode:
•
Independent Cache Performance Mode
: For a dual-controller system, controller failover is
disabled and data in a controller’s write-back cache is not mirrored to the partner controller. This
improves write performance at the risk of losing unwritten data if a controller failure occurs while
there is data in controller cache.
•
Active-Active ULP
: Both controllers are active using ULP (Unified LUN Presentation). Data
for volumes configured to use write-back cache is automatically mirrored between the two
controllers to provide fault tolerance.
•
Single Controller
: There is only a single controller in the enclosure.
•
Failed Over
: Operation has failed over to one controller because its partner is not
operational. The system has lost redundancy.
•
Down
: Both controllers are not operational.
Controller cache parameters:
Write Back Status
Shows the current, system-wide cache policy as determined by auto-write-through logic. This value is
not settable by users. If an auto-write-through trigger condition (such as a CompactFlash failure) is
met, the cache policy for all volumes changes to write-through, overriding the volume-specific
settings. When the problem is corrected, the cache policy reverts to the value configured for each
individual volume.
•
Enabled
: Write-back. This is the normal state.
•
Disabled
: Write-through.
•
Not up
: The controller is not up.
CompactFlash Status
•
Not Installed
: The CompactFlash card is not installed.
•
Installed
: The CompactFlash card is installed.
CompactFlash Health
•
OK
•
Degraded
•
Fault
•
N/A
•
Unknown
Summary of Contents for AssuredSAN 6004
Page 11: ...Document conventions and symbols 11 TIP Provides helpful hints and shortcuts...
Page 114: ...114 Alphabetical list of commands See also set cli parameters show protocols...
Page 139: ...show controller statistics 139 See also reset all statistics reset controller statistics...
Page 162: ...162 Alphabetical list of commands See also show power supplies...
