Hitachi HF-W2000 58 Instruction Manual page 259

10. SOFTWARE RAID1
(b) Replacing an HDD with the equipment turned off
1. Back up your data.
(See (2) Backing up files in 4. Hard Disk Drives (HDDs) and Solid State Drives (SSDs) in PRECAUTIONS.)
2. Shutdown the OS and unplug the power cord. Wait for at least one minute, and then replace the defective HDD
with a new one.
(See 6.3.6 Installing and removing an HDD or SSD.)
3. After the equipment turns on and the OS starts running, installation of the replacement HDD is automatically
detected and rebuilding starts. Verify that the DRIVE status lamp of the replaced HDD is blinking.
Starting the rebuilding manually
When the drive bay in which the replacement HDD is installed is shown as OFFLINE in the Hardware
status window, enter the following command at the command prompt as an administrator.
C:\> raidctrl /REBUILD
The DRIVE status lamp blinks after a while and RAID1 rebuilding starts.
4. When the DRIVE status lamp turns off, rebuilding is complete. In the Hardware status window, verify that the
status of both HDDs is normal.
NOTE
If the RAID status is shown as Optimal (Media Error) after rebuilding is complete, we recommend that you back
up your data and then also replace the copy source HDD with a new one. (For the replacement procedure, see 6.3.6
Installing and removing an HDD or SSD.)
After both HDDs have been replaced, set up the equipment again and restore the data from the backup files. (For
details about how to set up the equipment again, see 10.2.2 Setting up a new RAID1 configuration.)
Alternatively, recover the equipment by using a backup HDD. (See 10.5.2 Recovery by using a backup HDD.)
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