NetApp E-Series product portfolio.

Feature	E2600	E5400	E5500
Maximum Raw Capacity	768TB	1536TB	1536TB
Maximum Disk Drives	192	384	384
Max sustained Bandwidth	4,000 MBps	6,000 MBps	12,000 MBps
Form Factor	Dual (2) controllers in 4U/60, 2U/24 or 2U/12 shelf	Dual (2) controllers in 4U/60, 2U/24 or 2U/12 shelf	Dual (2) controllers in 4U/60, 2U/24 or 2U/12 shelf
Cache Memory	4GB	12GB or 24GB	24GB
IO Interface Options	6Gb SAS 8Gb FC 1Gb iSCSI 10Gb iSCSI	6Gb SAS 8Gb FC 10Gb iSCSI 40Gb IB	6Gb SAS 40Gb IB
Disk Shelves & Supported Drives	4U/60 drives 2TB/3/4TB 7.2K NL-SAS 900GB 10K SAS 2U/24 drives 600GB/900GB 10K SAS, 800GB SSD * 2U/12 drives 2TB/3/4TB 7.2K NL-SAS 600GB 15K SAS	4U/60 drives 2TB/3/4TB 7.2K NL-SAS 900GB 10K SAS 2U/24 drives 600GB/900GB 10K SAS 800GB SSD * 2U/12 drives 2TB/3/4TB 7.2K NL-SAS 600GB 15K SAS	4U/60 drives 2TB/3/4TB 7.2K NL-SAS 900GB 10K SAS 2U/24 drives 600GB/900GB 10K SAS 800GB SSD * 2U/12 drives 2TB/3/4TB 7.2K NL-SAS 600GB 15K SAS