Preliminary Information for Stopping and Starting Disks

• DiskSuite supports starting and stopping not only SPARCstorage Array disks, but non-SPARCstorage Array (SCSI) disks as well.

• If a SPARCstorage Array disk is spun down, a "down arrow" appears beneath the disk on the Disk View canvas. The Disk Information window also shows the disk's status. (Currently, the Disk View window does not display a "down arrow" for a non-SPARCstorage Array (SCSI) disk. Any I/O performed on a non-SPARCstorage Array disk automatically spins up that disk.)

• Stopping a disk is usually performed as part of a sequence of steps when performing hardware maintenance. Normally you would not stop a disk on its own.

• You can spin down a single SPARCstorage Array tray to replace a disk without having to power down the entire SPARCstorage Array.

• Currently, DiskSuite does not generate an event notification when stopping or starting a disk. This means that if you are running multiple instances of DiskSuite Tool on the same host, stopping or starting a disk in one DiskSuite Tool will not update the other instance. To avoid this potential problem, do not run multiple instances of DiskSuite Tool on the same host when stopping and starting disks.

The ssaadm(1M) command does not generate an event notification for DiskSuite when used to start and stop a disk. For this reason, do not use DiskSuite Tool and ssaadm(1M) together when stopping and starting disks. Doing so could cause DiskSuite Tool to display a disk`s status incorrectly. Always use one or the other to both stop and start a disk.