Adaptec 133U2 User Guide - Page 103
Pausing I/O on an Array
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Performing Array, Spare, and Disk Operations Pausing I/O on an Array Use this operation to pause data I/O on an array while you replace a disk, reconnect a loose connection, etc. If your array enclosure supports hot swapping1, you do not need to pause I/O to replace a disk. See the array enclosure documentation for more information. Note: Only a single action such as removal or inserting a drive (but not both) should be made with each use of Pause I/O. When you pause an array, all other devices on all channels on the array controller are also paused. I/O is automatically resumed after a specified pause interval. Note: The Pause I/O command is disabled if a Verify, Reconstruct, or Initialize operation is running. Follow these steps to pause and resume I/O on an array: 1 Click to open the Storage Configuration window. 2 Right-click the icon of the array you want to pause and select Pause I/O on the drop-down menu. 3 When the Pause I/O dialog box appears, enter a pause interval that does not exceed the maximum allowable pause period, and click OK to pause the array. Wait a few seconds until data I/O stops. Note: The minimum pause period is 5 seconds; the maximum pause period is 120 seconds. 1 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. 7-5
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