HP StorageWorks Scalable File Share - Manual (Page 314)

CLI commands A–20
A.19 set commands
A.19.1 set array
The
set array
command turns on/off the blue LEDs on the SATA drives in the SFS20 array, and sets the
preferred server, rebuild priority, and surface scan delay for the array. Turning array LEDs on or off can help
you to physically locate the array in the event of a cabling or setup error.
Syntax
set array array_number [preferred_server=server_name] [locator=on|off]
[rebuild_priority=low|medium|high] [surface_scan_delay=delay_period]
Arguments
array_number
Required. Specify the number of the SFS20 array.
preferred_server
Optional. Specify the server that is to be the preferred server for the array.
locator
Optional. Specify whether the blue LED on the SATA drives in the SFS20
array are to be turned on or off.
rebuild_priority
Specifies the priority that is to be given to an array rebuild operation in
relation to input/output operations. This parameter is used when the array
is being rebuilt (for example, after a disk fails or a disk is replaced).
By default, this parameter is set to
high
. HP strongly recommends that you
do not change the default.
When low priority is specified, expansion or rebuild takes place only when
the array controller is not busy handling normal I/O requests. This setting
has minimal effect on normal I/O operations. However, there is an
increased risk that data will be lost if another physical drive fails while the
rebuild is in progress.
When medium priority is specified, expansion or rebuild occurs for half of
the time, and normal I/O requests are handled during the rest of the time.
When high priority is specified, expansion or rebuild occurs at the
expense of normal I/O operations. Although system performance is
affected, this setting provides better data protection because the array is
vulnerable to additional drive failures for a shorter time.
surface_scan_delay
Specifies the length of time the array must be idle before a surface scan
starts. By default, the delay is set to two seconds; HP recommends that you
do not change the default unless you are requested to do so by your HP
Customer Support representative.
NOTE: The
preferred server
field for a LUN can be set using the
set lun
command (see
Section A.19.3). If the
preferred server
field is set for a LUN, the LUN setting overrides the array
setting.
Example
The following example sets server
south4
as the preferred server for array
3
.
sfs> set array 3 preferred_server=south4
The following example turns on the blue LED on the SATA drives on array
3
.
sfs> set array 3 locator=on