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- Description
- Specifications
1814-52A is the machine type and model of the IBM System Storage EXP520 Storage Expansion Enclosure, which IBM's installation guide says attaches only to the DS5020 storage subsystem. The enclosure holds up to 16 enhanced disk drive modules (E-DDMs) in 4 Gbps fibre channel, FC-SAS or SATA versions, giving up to 9.6 TB with 600 GB FC drives or 32 TB with 2 TB SATA drives.
IBM gives the EXP520 two hot-swappable and redundant environmental service modules (ESMs), labeled ESM A and ESM B, each with two SFP module ports. It also has two removable power supply and fan units, each with one power supply and two fans, and it is 3 U high. Up to six EXP520 enclosures fit on one redundant drive loop pair, for 112 drives, and the maximum with 2 TB SATA drives is 224 TB.
IBM supports only drives ordered as 1814-52A feature codes, and solid state drives need DS5020 controller firmware 7.70 while FC-SAS drives need 7.77. Moving drives from an EXP810 needs a separate purchase option. Check the DS5020 controller firmware level and the number of enclosures already on the loop before adding a 1814-52A. Other IBM storage and tape spares are grouped under the IBM tape and Storwize hub.
| 1814-52A Specs | |
| Machine type-model | 1814-52A (EXP520) |
| Attaches to | IBM DS5020 only |
| Height | 3U |
| Drive bays | 16 E-DDM |
| Drive types | 4 Gbps FC, FC-SAS, SATA |
| Capacity per enclosure | 9.6 TB FC (600 GB), 32 TB SATA (2 TB) |
| ESMs | 2, hot-swap, redundant, 2 SFP ports each |
| Power | 2 power supply and fan units |
| Per loop pair | up to 6 enclosures, 112 drives |
| Firmware | SSD 7.70, FC-SAS 7.77 |