Hitachi 3090 G2 Hardware Reference Manual page 61

Caution:
Do not remove or replace a non-failed (operational) HDD that is in a
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working configuration; that means that the HDD is in use. Replacing a disk
while the disk is in use can cause data corruption or disk damage.
When ejecting an HDD, be certain that you only press the release button
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for the one drive. If you press the wrong release button or both release
buttons, the server will malfunction.
If, by chance, you eject both of the HDDs, it is highly likely that the system
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is corrupted. The best chance for data recovery is to do the following. Do
not re-insert the drives. First, hard power down the server, and then re-
insert the drives and reboot. When the system comes back online, confirm
whether the NVRAM is recovered.
Both HDDs are located at the front of the chassis behind the bezel. The HDDs are
mounted in drive trays for ease of replacement. The trays are marked with their drive
numbers, A and B. No tools are required for drive replacement.
Procedure
1. Make sure you have the new hard disk(s) present.
2. Identify the HDD to be replaced. Using NAS Manager, confirm which HDD is to be
replaced.
The LED of the drive that requires replacement is red. If both drive LEDs are red, see
the SMU messages for guidance.
3. From the node's CLI, issue the command chassis-drive-clean-configuration
--disable --drive drive_letter
Where drive_letter is A or B, the letter of the drive you are replacing.
For example, chassis-drive-clean-configuration --disable --drive A
This command removes the drive from the RAID group, so you can continue with
the rest of the steps
4. Remove the HDD:
a. Double-check that you are looking at the intended drive to be removed.
b. Carefully press the button on the right side of the front of the disk tray to
release the retention latch handle.
Caution: Make sure that you only press the release button for that
one drive.
c. Pull the retention latch handle outward to disengage the disk from the server.
d. Slide the disk tray out of the chassis.
5. Insert the replacement HDD:
a. Slide the replacement disk into the chassis until the retention latch handle
starts to close.
b. Press the retention latch handle towards the chassis to secure the disk in the
server. When the disk tray is fully seated, the retention latch handle will click
into the closed position.
Chapter 6: Replacing server components
Hitachi NAS Platform 3080 and 3090 G2 Hardware Reference
Replacing a hard disk drive
61