HP MSA2324sa HP StorageWorks 2300 Family Modular Smart Array CLI reference gui - Page 116

show advanced-settings, Host Control of Caching

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show advanced-settings Description For API use, shows the settings for advanced system-configuration options. Syntax show advanced-settings Output Background Scrub Shows whether disks are automatically checked for disk defects to ensure system health. Partner Firmware Upgrade Shows whether component firmware versions are monitored and will be automatically upgraded on the partner controller. Utility Priority Priority at which jobs (such as vdisk verification and reconstruction but not background scrub) run with respect to I/O operations competing for the system's processors: High, Medium, or Low. SMART Shows whether Self-Monitoring Analysis and Reporting Technology is enabled or disabled for all disks, or is set to detect-only, which specifies that each new drive inserted in the system retains its current SMART setting. Dynamic Spare Configuration Shows whether the storage system will automatically designate a properly sized drive as a spare. Enclosure Polling Rate Shows the interval at which the storage system polls the EC (EMP) for status changes. Host Control of Caching Shows whether host control of write-back cache is enabled or disabled. When disabled, hosts cannot use the SCSI MODE SELECT command to change the storage system's cache setting. Sync Cache Mode Shows how the SCSI SYNCHRONIZE CACHE command is handled: • Immediate - Good status is returned immediately and cache content is unchanged. • Flush To Disk - Good status is returned only after all write-back data for the specified volume is flushed to disk. Missing LUN Response Missing LUN Response enables the host drivers to continue probing for LUNs until they reach the LUN to which they have access. • Not Ready - Sends a reply that there is a LUN where a gap has been created but that its "not ready." Sense data returned is sensekey = 2, code = 4, qualifier = 3. • Illegal Request - Sends a reply that there is a LUN but that the request is "illegal." Sense data returned is sensekey = 5, code = 25h, qualifier = 0. Controller Failure Shows whether the cache policy automatically changes to write-through when a controller fails. SuperCap Failure Shows whether the cache policy automatically changes to write-through when cache backup power is not fully charged or fails. CompactFlash Failure Shows whether the cache policy automatically changes to write-through when CompactFlash memory fails. Power Supply Failure Shows whether the cache policy automatically changes to write-through when a power supply fails. Fan Failure Shows whether the cache policy automatically changes to write-through when a fan fails. 116

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116
show advanced-settings
Description
For API use, shows the settings for advanced system-configuration options.
Syntax
show advanced-settings
Output
Background Scrub
Shows whether disks are automatically checked for disk defects to ensure system health.
Partner Firmware Upgrade
Shows whether component firmware versions are monitored and will be automatically upgraded on
the partner controller.
Utility Priority
Priority at which jobs (such as vdisk verification and reconstruction but not background scrub) run
with respect to I/O operations competing for the system's processors: High, Medium, or Low.
SMART
Shows whether Self-Monitoring Analysis and Reporting Technology is enabled or disabled for all
disks, or is set to detect-only, which specifies that each new drive inserted in the system retains its
current SMART setting.
Dynamic Spare Configuration
Shows whether the storage system will automatically designate a properly sized drive as a spare.
Enclosure Polling Rate
Shows the interval at which the storage system polls the EC (EMP) for status changes.
Host Control of Caching
Shows whether host control of write-back cache is enabled or disabled. When disabled, hosts
cannot use the
SCSI MODE SELECT
command to change the storage system's cache setting.
Sync Cache Mode
Shows how the
SCSI SYNCHRONIZE CACHE
command is handled:
•
Immediate
– Good status is returned immediately and cache content is unchanged.
•
Flush To Disk
– Good status is returned only after all write-back data for the specified
volume is flushed to disk.
Missing LUN Response
Missing LUN Response enables the host drivers to continue probing for LUNs until they reach the
LUN to which they have access.
•
Not Ready
– Sends a reply that there is a LUN where a gap has been created but that its “not
ready.” Sense data returned is sensekey = 2, code = 4, qualifier = 3.
•
Illegal Request
– Sends a reply that there is a LUN but that the request is “illegal.” Sense
data returned is sensekey = 5, code = 25h, qualifier = 0.
Controller Failure
Shows whether the cache policy automatically changes to write-through when a controller fails.
SuperCap Failure
Shows whether the cache policy automatically changes to write-through when cache backup power
is not fully charged or fails.
CompactFlash Failure
Shows whether the cache policy automatically changes to write-through when CompactFlash
memory fails.
Power Supply Failure
Shows whether the cache policy automatically changes to write-through when a power supply fails.
Fan Failure
Shows whether the cache policy automatically changes to write-through when a fan fails.