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Disk and filler modules
Each DPE-AX includes at least four hard disk drives. The first four disks, marked 0-3, are system disks (sometimes called vault disks) and contain vital software specific to the physical slot they occupy in the chassis. Do not move a system disk from its assigned slot to another slot.
Remove a system disk only if you need to replace it because it failed.
Disk modules
SATA 500
SATA 500
SATA 500
Figure 5
SATA 500
SATA 500
SATA 500
SATA 500
SATA 500 GB
SATA 500
SATA 500 SATA 500 SATA 500
CL3880
DPE-AX system (vault) disks
If a drive fails, you can replace it with another while the storage system continues running; software rebuilds the contents of the original disk onto its replacement.
DPE-AX and DAE-AX chassis have twelve slots for disk modules. Any unoccupied disk module slot requires a filler module to maintain air flow.
Each disk module, shown in Figure 6, consists of one disk drive in a carrier. You can add or remove a disk module while the storage system is powered up, but you should exercise special care when removing drives while they are in use.
Hardware and Operational Overview 5
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Disk drives
Figure 6 Disk module
Drive carrier
The disk drives are standard 3.5-inch (8.75-cm) by 1.0-inch (2.54-cm) serial advanced technology attachment (SATA) or serial attached
SCSI (SAS) drives. AX4–5 systems also support 2.5–inch SAS drives mounted in 3.5–inch drive carriers. For a detailed list of supported disk drives and the minimum revision of the FLARE
® operating environment (OE) that supports each disk, refer to the Disk and FLARE
OE Matrix under “Technical description” on the Learn page on the storage-system support website or contact your service provider.
The disk drive carrier is a plastic assembly that provides smooth, reliable contact with the enclosure slot guides and system board connectors. It has a handle with a latch and spring clips. The latch holds the disk module in place to ensure proper connection with the connectors.
6 Hardware and Operational Overview
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