Adaptec 133U2 User Guide - Page 111
Downing the Drive, Pausing I/O to an Array Disk Drive
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Performing Array, Spare, and Disk Operations Downing the Drive Use this option to stop all data I/O to a member of an array and remove it from the array. You might need this option if the disk generates a S.M.A.R.T.1 alert indicating that it is about to fail. When you down an array member, a spare is activated immediately (if available) to replace it, and a reconstruct is triggered. Note: The Down a Drive command can be used only for array members, not for spare disks or single disks. Follow these steps to down a disk: 1 Click to open the Storage Configuration window. 2 Right-click the icon of the disk you want to down and select Down a Drive from the drop-down menu. If a spare is available, it replaces the downed disk immediately and a reconstruct of the array is triggered. 3 Wait until the Reconstruct operation is completed, and then continue with your work in the program. Pausing I/O to an Array Disk Drive Use this option to pause data I/O on a disk drive that is connected to an array controller. You can use this option to replace the disk if the array enclosure does not support hot swapping2. See the array enclosure documentation for more information. When you pause I/O to a disk drive, all other devices connected to the array controller are paused as well. I/O resumes automatically at the end of the pause period. 1 S.M.A.R.T. stands for Self-Monitoring Analysis and Reporting Technology. Hard drives that support this technology continually analyze their performance and generate an alert if they determine that the disk is likely to fail in the next few hours. Adaptec CI/O Management Software generates an event notification if it receives this alert, allowing you to replace the disk before it actually fails. 2 Hot swapping support means that the array enclosure electrically isolates the bad disk's SCSI connector from the SCSI bus while the disk is being swapped to prevent data corruption. Data can still be transferred to and from the remaining good disks while the bad drive is replaced. 7-13
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