Hitachi Hyper Scale-Out, Maintaining And Troubleshooting, Page: 30 / 42

22 Adding and replacing hardware components
Hyper Scale-Out Platform Supporting and Troubleshooting
Replacing one or more failed disks
If a disk (not in maintenance mode, and on an UP node) has been down for more than 10
minutes, the disk will be marked in ERROR and data will be migrated off of it. Once a disk
is in ERROR, it will stay that way until deleted.
Always replace failed drives with new or reformatted drives. Do not switch drives between
nodes:
• A node cannot recognize a drive from a different node because the controller will
mark the drive as “foreign.”
• Importing a foreign drive will disrupt the node's ability to map drives to a slot
location.
• You may swap a complete and intact set of drives from one node, however, because
this task requires manually importing them via bios or command line, it should only
be accomplished with the assistance of Hitachi Support personnel.
To replace a 3.5” HDD disk
1. Press the tray release button.
2. Pull the disk release lever completely open.
3. Unscrew the failed disk from the drive tray.
4. Attach the new replacement disk to the drive tray with the screws.
5. Insert and engage replacement disk assembly in slot.
6. Lock in the disk place.
Important: Ensure the tray handle is fully open and unlocked before
trying to pull the tray out or you can damage the disk.