Adaptec xw4100 Software User's Manual

Also see for 2120S - SCSI RAID Controller: User guide Installation guide Installation guide Installation and user guide Installation guide

Contents

Adaptec xw4100 Software User's Manual Manual pdf 73 page image

4-7Using the Command Line InterfaceCreating a RAID 5When creating a RAID 5, you need to determine the stripe size thatis most suitable for your environment. See Creating a RAID 0 formore information about determining the appropriate stripe size foryour environment.To recreate the data of a failed disk in a RAID 5, you use a form ofredundancy called parity. When you set up parity, you initializethe parity stripes by using a scrubbing switch (/scrub=TRUE).Parity is set up in the background, and the disks are availableimmediately.The /scrub switch is not available in UNIX/Linux. For UNIX/Linux, the RAID 5 is always created by building.To create a RAID 5, use the container create raid5command. In the following example, a RAID 5 is created on SCSIdevices (2,1,0), (2,2,0), and (2,3,0) using 100 M of available spacefrom each SCSI device. The /stripe_size switch specifies that eachstripe is 64 K in size.AAC0> container create raid5 /stripe_size=64K ((2,1,0),100M) (2,2,0) (2,3,0)Executing: container create raid5 /stripe_size=65,536((CHANNEL=2,ID=1,LUN=0),104,857,600)(CHANNEL=2,ID=2,LUN=0) (CHANNEL=2,ID=3,LUN=0)Deleting ArraysTo delete an array, use the container delete command. In thefollowing example, array 0 is deleted.AAC0> container delete 0Executing: container delete 0After running the container delete command, use thecontainer list command to verify that the array was deleted.In the following example, no arrays are found on the controller.AAC0> container listExecuting: container listNo containers found.