Cache per Controller: 4 GB upgradable to 8 GB

Controller Configuration: Dual

Disk Drives Supported in Controller (Type, Size, Speed):

SFF 2.5- inch disk drives: 
146 GB, 300 GB at 15k rpm
300 GB, 600 GB, 900 GB and 1.2 TB at 10k rpm
500 GB, 1 TB at 7.2k rpm SAS nearline
LFF 3.5- inch disk drives:
2 TB, 3 TB and 4 TB at 7.2k rpm
900 GB and 1.2 TB at 10

Drive Type: Dual-port, hot-swappable 6 Gb SAS disk drives

Host Interface:

1 Gbps iSCSI and 6 Gbps SAS (optional 8 Gbps Fibre Channel, 1 Gbps iSCSI, 6 Gbps SAS or 10 Gbps iSCSI/Fibre Channel over Ethernet)

Maximum Drives Supported:

SFF enclosure: 24 x 2.5-inch drives
LFF enclosure: 12 x 3.5-inch drives

Raid Levels: RAID 0, 1, 5, 6 and 10

User Interface: Storwize V3700 graphical user interface