Bus Interface 8-lane, 8 GT/s PCI Express 3.0 Compliant
Number of Channel / Port 16x 6Gb/s SAS / 6Gb/s SATA Channels
Data Transfer Rates Up to 6Gb/s per port
Port Type Four SFF-8643 mini-SAS HD
Storage Device Support 16x SAS/SATA HDD/SSD. Note: only Enterprise and NAS drives are supported. Please click Here for the full compatibility list.
Form Factor Low Profile
Controller Dimensions 5.97*2.68*0.06 (in) (RR2840A)
5.63''W*2.71''H*0.72''D (RR2840C)
Controller Weight 0.26lbs.
RAID Mode 0, 1, 5, 6, 1/0, 5/0 and JBOD / Non-RAID Mode
  • RAID 6 is not supported on macOS
  • Bootable RAID 6 is not supported
Operating System Support Window Server 2008 and Window 7 and later
macOS 10.9 and later
Advanced RAID Features Flash ROM for Upgradeable BIOS
Storage Health Inspector
Redundant RAID Configurations
BIOS PnP (plug and play) and BBS (BIOS boot specification) support
Bootable RAID Array
Multiple RAID Partitions supported
Supports multiple RAID Controllers per system
Support up to 4 RAID controllers per system
Online Array Roaming
Online RAID Level Migration (ORLM) - (not supported by macOS)
Online Capacity Expansion (OCE) - (not supported by macOS)
RAID Quick Initialization for fast array setup
Drive hot-plug support
Global Hot Spare Disk support
Automatic and configurable RAID Rebuilding Priority
Auto resume incomplete rebuilding after power on or reboot system
Disk Format compatible: 512, 512e, 4Kn
Larger than 2 TB Drive and RAID Array support
Spin down Massive Arrays of Idle Disks support
Native Command Queuing
Disk media scan and repair
Device Error Recovery support
Automatic remap and fix drive bad block for Redundant RAID Levels (RAID 1, 5, 6, 1/0, 5/0)
Staggered Drive Spin Up
Write Back and Write Through
RAID Management Suites: RAID Management Suites:
  • BIOS/UEFI/Firmware configuration tool
  • Browser-Based management tool
  • CLI(Command Line Interface- scriptable configuration tool)
  • API package
Enclosure Management Interface SGPIO, SES-2 and I2C
Drive LEDs supported SGPIO, SES-2 and LED Header
SMTP Email Alert Notification Yes
Alarm Buzzer Yes
Work Temp +5°C ~+ 55°C
Storage Temp -20°C ~ +80°C
Operating Voltage PCI-e: 12V, 3.3V
Power 14W
(12V 1A, 3.3V 0.5A)
MTBF (Mean Time Before Failure) 920,585 Hours
Certification Approval CE, FCC, RoHS, REACH, WEEE
8643-4sata-1m cable

8643-4SAS-1M - 1 Meter Cable length, SFF-8643 to Controller and 4x SFF-8482 to 4x SAS Drives.

8643-4sata-1m cable

8643-4SATA-1M - 1 Meter Cable length, SFF-8643 to Controller and 4x SATA to 4x SATA Drives.