Apple Xserve Up Mac OS X Server Specifications Page 301

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Appendix
PCI RAID Card Command
Reference
Use this appendix to learn the megaraid commands to
manage a PCI RAID card.
The megaraid tool uses are described in the following table, along with parameter
explanations.
Parameter Description
megaraid -alarm -on | -off | -silence Turns the alarm on, off, or to silence.
When the alarm is set to silence, it turns
off for the current failure, but turns on
again for the next failure.
megaraid -changepolicy
ld
[-writecache
enable
|
disable
] [-readahead
on
|
off
|
adaptive
] [-iopolicy
direct
|
cached
] [-log
file
]
Changes the policy of an existing logical
drive. The parameter
ld
is the logical
drive ID. This option applies to all RAID
levels; however, the policies apply only to
individual logical drives.
megaraid -changestate
pd
-online |
-fail [-log
file
]
Changes the state of an existing physical
drive to
online or fail.
megaraid -chkcon
ld
-start | -stop |
-status [-log
file
]
Starts, stops, or checks the status
(percentage of progress) of a consistency
check for a specific logical drive. The
parameter
ld
is the logical drive ID.
megaraid -create auto [-numld
n
]
[-log
file
]
Destroys configured logical drives and
creates a RAID level based on the physical
drive or drives present. It can create from
1 to 40 logical drives, depending on the
number of logical drives (
numld
n
)
parameter. By default
numld is 1.
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