| The MSA20 enclosure is a SATA 1.5 Gb/s disk drive storage enclosure with Ultra320 SCSI host connectivity. The MSA20 is a 2U rack-mountable 12-drive SATA external enclosure that is for minimum I/O workloads such as reference data, archival, and disk-to-disk backup. All models of the MSA20 enclosure family have the following features: Support for SATA 160GB and 250GB drives allows up to 3TB of raw storage capacity in a 2U enclosure. Supports up to 12 (1-inch) SATA 1.5 Gb/s Universal serial hard disk drives. Up to 24TB of raw storage capacity in 18U when deployed behind the MSA1500 SAN controller shelf. Houses up to 21 enclosures in one 42U rack for a single-rack storage capacity of up to 63TB of disk storage. Ultra320 (LVD) host support compatibility with sixth generation Smart Array controllers. 128MB battery-backed write cache with 72hr battery life. Integrated Smart Array technology to minimize drive-rebuild time. Support for RAID 0, RAID 1, RAID 5, and advanced data guarding (ADG). Hot-pluggable disk drives, power supplies, and fans. Redundant fans and redundant power supplies. Integrated environmental monitoring monitors environmental conditions within the enclosure and components, such as the power supply and fans. Easy removal of parts provides better serviceability. No tools are required.
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