Maintenance Procedures
The following topics describe maintenance procedures for the HPE storage array.
Drive Maintenance
The procedures for maintaining drives are the same for the following:
• Solid State Drives (SSDs)
• Arrays
• Expansion Shelves
How the Storage Array Handles a Failed Drive
The HPE storage array is designed to be highly available, with redundant components. In some cases, more than one drive
could fail. If this occurs, the arrays use integrated spare space to rebuild data on one drive, even before the failed drive is
replaced. This ensures that the array restores maximum data redundancy in a timely manner.
When a drive fails, a rebuild process starts automatically on spare distributed space (not to a dedicated spare drive). If the
failed drive is inserted back to the array and is determined to be usable, a quick rebuild reinstates the drive. Even if a rebuild
has already begun on integrated spare space, the quick rebuild takes priority, and the full rebuild is halted.
When a new replacement drive is inserted, if data has already finished repopulating to the integrated spare space, data is
copied back to the new drive. If a second drive fails, and no drives have yet been replaced, there will be no second rebuild,
since the array can only rebuild the amount of data on one drive of integrated spare.
How to Tell that a Drive has Failed
Any of the following events can indicate that a solid state drive (SSD) has failed:
• LEDs are solid red or off
• Event appears in the Events list
• Receipt of an alert email from the array.
21 Drive faultDrive operation
Replace a Drive (SSD)
Use this procedure to replace SSDs in your HPE storage array or expansion shelf.
Before you begin
5 to 10 minutesTime required:
Replacement drive ordered from HPEParts required:
Maintenance Procedures 65
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