1746-E4A IBM EXP3524 Single ESM Expansion Unit, 1746-E4A

The IBM EXP3524 Expansion Unit, with support for up to twelve 3.5-inch high-performance SAS, nearline SAS drives or selfencrypting drives (SEDs), can offer the highest flexibility with support for a full range of requirements—high capacity (up to 36 TB) and low cost to high-performance critical applications. A single EXP3512 can help ensure that workload demands are assigned to the appropriate drive technology, allowing organizations to transparently tier storage without the high cost typically associated with this approach.

Part Numbers: 1746-E4A

Specifications:

Drive interface: 6 Gbps SAS

Supported drives: 6 Gbps SAS 2.5-inch drives: 146 GB 15k rpm, 300 GB 10k rpm, 600 GB 10k rpm 900 GB 10k rpm; 500 GB 7.2k rpm Nearline, 1 TB 7.2k rpm Nearline, 300 GB 10k rpm SED, 200 GB and 400 GB SSD

Maximum drives supported: EXP3512 – twenty-four 2.5-inch drives. Scalability up to 192 drives (mix of expansion enclosures)

Fans and power supplies: Dual

Rack support: Yes – standard

Size: 2U rack-optimized

Compatibility: IBM System Storage EXP3500.