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EMC VNXe3100 Hardware Information Guide
Overview
DAE description
Each DAE consists of the following components:
◆
Drive carrier
◆
Disk drives
◆
Midplane
◆
Link control cards (LCCs)
◆
Power supply/cooling modules
◆
EMI shielding
Drive carrier
Disk drive carriers are plastic assemblies that provide smooth, reliable contact with the
enclosure slot guides and midplane connectors. Each carrier has a handle with a latch and
spring clips. The latch holds the disk drive in place to ensure proper connection with the
midplane.
shows the disk drive ready LEDs that are integrated into
the chassis that the carrier is in. These LEDs primarily show the disk drive readiness as
well as activity.
Disk drives
You can visually distinguish between drive types by their different latch and handle
mechanisms and by the type, capacity, and speed labels on each drive. You can add or
remove a disk drive while the DAE is powered up, but you should exercise special care
when removing drives while they are in use. Disk drives are extremely sensitive electronic
components. For more information about the supported disk drives for the VNXe3100,
refer to the
EMC
®
VNXe™ Series Storage Systems Disk and OE Matrix
document.
Midplane
A midplane separates the front-facing disk drives from the rear-facing LCCs and power
supply/cooling modules. It distributes power and signals to all components in the
enclosure. LCCs, power supply/cooling modules, and disk drives plug directly into the
midplane.
LCCs
An LCC supports, controls, and monitors the DAE, and is the primary interconnect
management element. Each LCC includes connectors for input and expansion to
downstream devices.
shows an enclosure address (EA) indicator
shows an example of an LCC bus (loop)
identification indicator.
Power supply/cooling module
The power supply/cooling module integrates independent power supply and blower
cooling assemblies into a single module.
Each power supply is an auto-ranging power-factor-corrected, multi-output, off-line
converter with its own line cord. The drives and LCC have individual soft-start switches
that protect the disk drives and LCC if you install them while the disk enclosure is powered
up. A disk or power supply with power-related faults will not affect the operation of any
other device.