The Promise 2TB SATA Drive Module is a hot-pluggable hard drive in a special drive carrier module designed for hot-swappable upgrade or replacement. The drive operates at 7,200 rpm and is equipped with 32MB of disk cache. Serial ATA hard drives Serial ATA hard drives combine low cost with excellent performance. Serial ATA drives feature a point-to-point interconnect to each drive, so each drive is electrically isolated from the others and multiple drives don't compete for bandwidth. The drives come with 32MB of disk cache, operate at 7,200 revolutions per minute (rpm), and use a protocol that enables fast data transfer to and from the hard drive-3 gigabits of data per second. Tiered storage in a single RAID box The Promise VTrak E-Class drive modules can be mixed inside a single RAID subsystem or in the expansion chassis allowing for flexible tiered storage configurations. 7200-rpm SATA drives deliver high capacity and excellent sequential performance for audio and video data. Promise serial ATA drive module compatibility These SATA drive modules are qualified for use with Promise VTrak E-Class RAID subsystems and VTrak expansion chassis only.