Disk Patrol - Fujitsu Eternus DX100 S3 User Manual

Chapter 6 Information Settings and Display
6.4 Utility
6.4.7

Disk Patrol

This section explains the commands related to the disk patrol function.
The disk patrol function is a function that performs diagnostic tests on the disks without affecting the host I/O
performance. This function detects and corrects any disk problems if possible before a disk error occurs.
A disk error can cause data loss or data corruption if there is a double error of the disks or if a block error occurs
during rebuild operations. The disk patrol function checks the hot spares to ensure that they have no errors
before they are used during Rebuild or Redundant copy operations.
In addition, the disk patrol function can disconnect a disk with an error being detected if necessary.
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ETERNUS CLI User's Guide
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