Acer Altos R920 Series - Manual (Page 22)

1 System tour 4
• 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