Set Disk-Parameters - HP P2000 Reference Manual

set disk-parameters

Description Sets parameters that affect disk operation. Two features controlled by these parameters are disk
Self-Monitoring Analysis and Reporting Technology (SMART) and drive spin-down (DSD).
• Disks equipped with SMART technology can alert the controller of impending disk failure. When
SMART is enabled, the system checks for SMART events one minute after a restart and every five
minutes thereafter. SMART events are recorded in the event log. Changes to the SMART setting
take effect after a rescan or a controller restart.
• The DSD feature monitors disk activity within system enclosures and spins down inactive disks,
based on user-specified settings. This command sets DSD parameters for available disks and
global spares. To set DSD parameters for a vdisk, use
NOTE:
• Spun-down disks are not polled for SMART events.
• Operations requiring access to disks may be delayed while the disks are spinning back up.
Syntax
set disk-parameters
[smart enabled|disabled|on|off|detect-only]
[spin-down enabled|disabled|on|off]
[spin-down-delay delay]
Parameters smart enabled|disabled|on|off|detect-only
Optional. Enables or disables SMART monitoring for all disks in the storage system. Each disk added
after detect-only is set retains its SMART setting. Enabled by default.
When SMART is enabled, the system checks for SMART events one minute after a restart and every
five minutes thereafter. SMART events are recorded in the event log.
spin-down enabled|disabled|on|off
Optional. Enables or disables DSD for available disks and global spares. Disabled by default.
spin-down-delay delay
Optional. Sets the period of inactivity after which available disks and global spares automatically
spin down, from 1–360 minutes. DSD is enabled by a value in this range, or is disabled by the value
0. If DSD is enabled and no delay value is set, the default is 15 minutes.
Example Enable SMART and DSD, and set the DSD delay to 10 minutes:
# set disk-parameters smart on spin-down on spin-down-delay 10
Success: Command completed successfully.
See also • show disk-parameters
132 Alphabetical list of commands
DSD affects disk operations as follows:
set vdisk.