Installation manual

51 ATTO Technology Inc. ATTO Utilities Installation and Operation Manual
File System Repair Tools
When a RAID array has been made accessible by setting the drive states appropriately, the host's file system may
still have integrity problems. Most operating systems have utilities that try to detect and repair file access issues.
Windows: CHKDSK
Chkdsk (Chkdsk.exe) is a Windows command-line tool
that checks formatted disks for problems. Chkdsk then
tries to repair any problems that it finds. For example,
Chkdsk can repair problems related to bad sectors,
lost clusters, cross-linked files, and directory errors. To
use Chkdsk, you must log on as an administrator.
Linux: FSCK
The system utility fsck ("file system check") performs a
file system consistency check and interactive repair. It
has options to do a quick check, preen files, preen and
clean files, and others.
Mac OS X: First Aid (part of Disk Utilities)
Launch Disk Utility from OS X or the OS X Installer In
the column on the left, select the volume you want to
repair, and then on the right, click the
First Aid tab.
Click
Repair Disk to verify and repair any problems on
the selected volume(s). The results of the repair will be
posted in the window. When no problems are found, it
reports: “The volume “diskname” appears to be OK."
Occasionally, at the end of a scan, a message similar
to the following will appear: “Scan complete. Problems
were found, but Disk First Aid cannot repair them.”
Note
If there are problems found, you should click
Repair Disk to scan again. If the same
problem(s) are found during the second
scan, it means First Aid cannot repair the
disk. This indicates that some of your files
may be more severely damaged. To repair
this damage, you can either back up your
disk and reformat, or obtain a more
comprehensive disk repair program.
Command Line Interface
Using CLI to Identify a Failed Drive
Blockdevscan
The blockdevscan CLI command shows a list of all attached drives and their usage. Use this command to update the
list of drive IDs, which are needed by other CLI commands.
For members of a RAID Group, the InUse column shows the RAID Group name.
blockdevscan
6
;ID Vendor Product SerialNumber Capacity InUse Port
;----------------------------------------------------------------------
0 ST3250310NS 9SF0800F 232.88GB r5
1 ST3250310NS 9SF076NJ 232.88GB r5
2 ST3160812AS-1 5LS25P51 149.10GB r5
3 ST3250620AS 6QF0LJ17 232.88GB r5
Ready.