HP Surestore Disk Array 12h System Administrator's Guide for HP-UX, MPE, and W - Page 237

Using AutoRAID Manager for Windows NT Performing Disk Array Maintenance Tasks 4. Click on the disk you want to test. 5. Click Test. 6. Select Read Verify or Write Read. 7. Enter the percent of the disk media you want to test. 8. If you are performing a Write/Read test, you must first Down the disk. The diagnostic test will begin and a progress indicator will be displayed in the Test Status box. When the test concludes, the results will be displayed. To continue using a disk following a Write/Read test, it must be manually included back in the array configuration. See "Including a Disk Manually" for more information. Downing a Disk If you must remove a disk from the array for testing or replacement, the disk should be downed before removing it from the array enclosure. In some situations, downing a disk may cause a loss of data redundancy or even a loss of user data. You must decide if you are willing to accept either of these conditions before downing the disk. In addition, if Auto Rebuild is enabled, the disk array will begin rebuilding the data on the downed disk immediately. If you do not want this to happen, you must disable Auto Rebuild before downing the disk. See "Rebuilding the Disk Array" for information on disabling Auto Rebuild. To down a disk: 1. Right-click the disk array from the Detail pane. 2. Click Properties. 3. Click the Diagnostics tab. 4. Click on the disk you want to down. 5. Click Down. 6. From the Down Physical Disk Warning dialog, select the desired option restricting the conditions under which the down can occur. To return a downed disk to the array configuration, you must manually include it. See "Including a Disk Manually " for more information. Switching Array Controllers In disk arrays with two controllers, the array automatically switches to the secondary controller if the primary controller fails. However, you can manually switch controllers if necessary. 237 Windows NT