IBM DS3500, Installation, User'S, And Maintenance Manual

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Attention:
– The disconnect device (circuit breaker) must be rated at 20 A.
– Make sure that only 12 AWG or larger copper conductor wires are used for all of the wiring
between the DS3500 or EXP3500 dc power connectors and the dc power source.
DS3500 storage subsystem and EXP3500 storage enclosure
components
The DS3500 storage subsystem and EXP3500 storage enclosure have the following removable
components. These components, called customer replaceable units (CRUs), are accessible from the front or
rear of the storage subsystem.
v
(DS3512 and EXP3512) Up to 12 LFF 3.5–inch 6 Gbps SAS or NL SAS drives and drive filler panels.
v (DS3524 and EXP3524) Up to 24 SFF 2.5–inch 6 Gbps SAS, NL SAS, or SSD drives and drive filler
panels.
v (DS3512 and DS3524) Up to two controllers. Each controller supports the installation one of the
following optional host port adapters:
– 6 Gbps SAS
– 8 Gbps FC
– 1 Gbps iSCSI
– 10 Gbps iSCSI
v
(EXP3512 and EXP3524) Up to two ESM modules.
v
Two ac power supply and fan units (machine type 1746 models C2A, E2A, C4A, and E4A).
v
Two dc power supply and fan units (machine type 1746 models C4T and E4T).
Disk drives and bezels
The hot-swap drive bays that are accessible from the front of the DS3512 storage subsystem and EXP3512
storage enclosure are shown in Figure 1-2. The hot-swap drive bays that are accessible from the front of
the DS3524 storage subsystem and EXP3524 storage enclosure are shown in Figure 1-3 on page 1-9.
Hot-swap hard disk drive Filler panel
Bezels
Figure 1-2. DS3512 storage subsystem and EXP3512 storage enclosure hot-swap drive bays and bezels
1-8
System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide