megaraid -showadapter

     megaraid -showdevices

     megaraid -showconfig [ld]

     megaraid -destroyconfig [-yes]

     megaraid -create R0 | R1 | R5 -drive { 0 1 2 3} [-stripesize n] [-size x]
              [-writecache enable | disable] [-readahead on | off | adaptive]
              [-iopolicy direct | cached]

     megaraid -create auto [-numld n]

     megaraid -changepolicy ld [-writecache enable | disable]
              [-readahead on | off | adaptive] [-iopolicy direct | cached]

     megaraid -rebuild pd -start | -stop | -status

     megaraid -chkcon ld -start | -stop | -status

     megaraid -initialize ld -start | -stop | -status

     megaraid -spare pd -create | -delete

     megaraid -changestate pd -online | -fail

     megaraid -alarm -on | -off | -silence

     megaraid -flash flashFileName

DESCRIPTION

     megaraid is a command line RAID management tool. This tool can create
     logical drive using multiple/single physical drives. Also, it has the
     capability to manage these logical/ physical drives and provides options
     to monitor and trigger any action on these logical/physical drives.

     If -log option is given, then all the displayed information will be
     logged with Date and Time in a file specified by -log option. This option
     will apply to all commands/operations.

COMMAND DETAILS

     megaraid -showadapter [-log file]

     Displays all relevant information about the adapter including product
     identification, battery status, number of logical drives created, cache
     size etc.

     megaraid -showdevices [-log file]

     Displays all drives connected to the MegaRAID adapter. This will display
     Drive Id, Identification, size, status and any SMART alerts. The status

     Clears the configuration. If the user does not specify "yes" the system
     will prompt for reconfirmation.

     megaraid -create R0 | R1 | R5 -drive { 0 1 2 3} [-stripesize n] [-size x]
     [-writecache enable | disable] [-readahead on | off | adaptive]
     [-iopolicy direct | cached] [-log file]

     megaraid -create auto [-numld n] [-log file]

     Creates a logical drive and adds it to the existing configuration. The
     RAID level and participating physical drives are mandatory parameters.
     All other parameters are optional. If size is not specified, then the
     remaining size of the array will automatically be used. If stripe size
     and cache policy are not specified then the default values will automati-
     cally be used. The stripe size parameter is in Kilobytes and valid stripe
     sizes are 16, 32, 64 and 128 KiloBytes. The size parameter is in MB and
     the minimum size of a logical drive must be 100MB. A logical drive cannot
     be created with a capacity less than 100MB. Once a logical drive is cre-
     ated, the cache policy can be changed using the changepolicy command.

     Auto Create will automatically destroy all current configuared logical
     drives and create RAID Level depending on physical drive present. It can
     create n ( 1 to 40) logical drive(s) depending on numld parameter. By
     default numld is 1.

     Default values are as follows:

     stripesize 64K

     writecache enabled

     readcache off

     cached io

     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 id must be
     the logical drive id. This option will apply to all RAID levels; however,
     the policies will only apply to individual logical drives.

     megaraid -spare pd -create | -delete [-log file]

     Creates or deletes a global hotspare. Hotspares can be created from ready
     pool devices. After deletion, a hotspare drive will be a ready drive. The
     parameter pd is the physical drive id.

     megaraid -rebuild pd -start | -stop | -status [-log file]

     Rebuilds, starts, stops or gives the status of a particular physical

     Initializes, starts, stops, or gives the status (percentage of progress)
     of a particular logical drive. The parameter ld is the logical drive id.

     megaraid -changestate pd -online | -fail [-log file]

     Changes the state of a physical drive from online to failed. The parame-
     ter pd is the physical drive id.

     megaraid -alarm -on | -off | -silence

     Turn Alarm on, off or silence. When alarm set to silence, it will turn
     off for current failure but it will turn on for next failure.

EXAMPLES

     Creating RAID0 Logical Drive with a stripe size of 128K and a drive size
     of 1 GB = 1024 MB

     megaraid -create R0 -drive 0 1 2 -stripesize 128 -size 1024

     Creating RAID1 Logical Drive with a stripe size of 64K and a drive size
     of full capacity

     megaraid -create R1 -drive 0 1 -stripesize 64

     Creating RAID5 Logical Drive with a stripe size of 64K and a drive size
     of full capacity, the cache policy is Read Ahead, WriteCached enabled,
     and CachedIO

     megaraid -create R1 -drive 0 1 -stripesize 64 -writecache enable
     -readahead on -iopolicy cached

     Creating automatically  5 logcial drives

     megaraid -create auto -numld 5

     Run Check Consistency on logical drive 5 RAID 5

     megaraid -chkcon 5 -start

Mac OS X                          22 Mar 2004                         Mac OS X