Recovery From A Failure In Both Hdds; Recovering A Normal Hdd That Was Set To Offline By Mistake - Hitachi HF-W2000 58 Instruction Manual

10. SOFTWARE RAID1

10.4.5 Recovery from a failure in both HDDs

After you replace both HDDs, set up the equipment again (see 10.2.2 Setting up a new RAID1 configuration), and
then recover the data from the backup files.
Alternatively, recover the equipment by using a backup HDD. (See 10.5.2 Recovery by using a backup HDD.)

10.4.6 Recovering a normal HDD that was set to offline by mistake

On this equipment, RAID1 keeps track of all HDDs that have been set to offline (hereinafter referred to as offline
HDDs) for any reason. Therefore, an offline HDD cannot be used within equipment that sets the HDD to offline.
As an exception, however, if a normal HDD is set to offline by mistake or if an HDD is set to offline by the RAS
software for evaluation of the equipment, the following action can restore the offline HDD, and allow it to be used
as a new HDD again.
● If you apply the recovery method for an offline HDD to an HDD that was set to offline by
something other than the RAS software, the HDD might not be recovered, or even if it is
recovered, the HDD might not work properly.
● Use the recovery method for an offline HDD only to evaluate the equipment. If you apply the
recovery method for an offline HDD to equipment actually used in the field, for example, a
system in normal operation, malfunctions such as data loss might result.
● If an HDD is automatically set to offline by the equipment, the HDD might have failed. Do not
apply the recovery method for an offline HDD to such an HDD.
● An HDD recovered by using the recovery method for an offline HDD must not be used for
equipment actually used in the field. If it is, malfunctions such as data loss might result.
1. Shutdown the OS and unplug the power cord. Then, wait for at least one minute and remove the normal HDD.
Record the drive bay number of the removed HDD.
2. Install only the offline HDD.
3. Initialize the offline HDD by using the software RAID utility. See 10.6.2 Starting and exiting the software
RAID utility and 10.6.7 Drive initialization feature.
4. Wait for about one minute, and then install the offline HDD and the normal HDD removed in step 1 in the
original HDD drive bay. (Check the recorded drive bay number to ensure that the installation location is
correct.)
The offline HDD can now be used as a new HDD again.
NOTICE
10-20