Maintenance Procedures; Drive Maintenance; How The Storage Array Handles A Failed Drive; How To Tell That A Drive Has Failed - HPE Nimble Storage HF Series Hardware Manual

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)
Hard Disk Drives (HDDs)
Arrays
Expansion Shelves

How the Storage Array Handles a Failed Drive

The HPE storage array is designed to be highly available, with redundant components. With Triple+ Parity RAID, an Adaptive
Flash array continues serving data with up to two independent HDD failures. At the RAID level, three drives are dedicated to
parity, which is striped evenly across the RAID group. Data is reconstructed from parity onto the replacement disk when the
failed drive is replaced.

How to Tell that a Drive has Failed

Any of the following events can indicate that a hard disk drive (HDD) or 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.
1 Drive B (empty)
1 Drive fault

Replace a Failed Drive (SSD)

Use this procedure to replace SSDs in your HPE storage array or expansion shelf.
2 Drive A operation (populated)
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