Acer R920 Series manual Media storage, SAS controller, Integrated hardware RAID optional

4 1 System tour

•Memory reliability, availability, and serviceability (RAS) features

-Memory scrub engine

-Memory mirroring

-Memory sparing

Note: For more information on system RAS features, refer to

“Appendix B: Memory configuration” on page 163.

Media storage

•One 5.25-inch device bay supports:

•DAT 160 tape drive

•AIT-2 tape drive

•LT0-3 half-height tape drive

•Up to eight hot-plug drive carriers

•2.5-inch SAS hard disk drives

SAS controller

•LSI 1078 SAS controller

•Supports RAID levels 0, and 1

Integrated hardware RAID (optional)

•Supports RAID levels 0, 1, 5, 6, 10, 50, and 60 with installation of the following components:

•RAID activation key (iButton)

•DDR2-667 registered ECC DIMM for RAID cache

•RAID Battery Backup Unit (BBU). Available as an upgrade option.

Serial ATA port

•Two internal 7-pin vertical SATA ports

•Supports transfer rate of up to 3.0 GB/s