Prerequisites for Stopping a Disk (SPARCstorage Array)

Because SPARCstorage Array disks are in trays, to stop one disk you should stop all disks in the tray to ensure proper shutdown. This involves:

• Unmounting file systems on the disks in the tray

• Stopping all database processes accessing the disks in the tray

• Stopping all other processes accessing the disks in the tray

• Stopping the disks

Stopping the disk also causes a sync_cache to flush outstanding writes in NVRAM.

1. Make sure you have met the prerequisites ("Prerequisites for Managing the System") and have read the preliminary information ("Preliminary Information for Stopping and Starting Disks").

2. Check for other DiskSuite objects on the affected controller, disk, or tray.

   In the Disk View window, display the controller. Display the controller's Info window and select Device Mappings to view which objects (metadevices, hot spares, state database replicas) might be using the physical device(s).

3. Stop all access to the disk.

   For example, unmount any file systems associated with the disk, or stop all I/O to a database using the disk.

4. In the Disk View window, select a controller, tray, or single disk and choose Stop Disks from the Object menu.

5. A Stop Disk dialog box appears, reminding you that all I/O to the disk should be stopped. Click Continue.

6. The system notifies you when the disk is stopped. Click OK.

   For a SPARCstorage Array, a down arrow appears beneath each disk that is stopped, indicating that the disk is spun down. If you stop a SCSI disk, no down arrow appears.