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Green circuit board with eight SATA ports and silver heatsink

Ruth's sister

Ruth's sister AAR-2820SA 128M 8-port SATA RAID controller

SKU CH-ANF4-4RVW8

Eight-port SATA RAID controller with 128 MB cache for storage arrays

  • 128 MB cache accelerates RAID rebuilds
  • Eight SATA ports connect multiple drives
  • AAR-2820SA model built for Adaptec arrays
  • Each card tested before shipment

8-port SATA RAID controller with 128 MB cache

This Ruth's sister AAR-2820SA card provides eight SATA ports for connecting multiple drives in a RAID array. The onboard 128 MB cache helps accelerate read and write operations across the configured volumes. It is suited for servers or workstations that need hardware RAID management for SATA storage. Each unit is tested before shipment to verify basic operation.

SATA interface limits throughput to the SATA

The controller communicates over SATA, so maximum drive speed is bound by the SATA specification rather than faster protocols. Eight ports share the host bus bandwidth, which can become a bottleneck when all drives are active simultaneously. The 128 MB cache size may limit performance with very large stripe sizes or heavy random workloads. Buyers needing higher port counts or newer interfaces should consider other solutions.

Highlights

  • 128 MB cache accelerates RAID rebuilds
  • Eight SATA ports connect multiple drives
  • AAR-2820SA model built for Adaptec arrays
  • Each card tested before shipment

Specifications

No published specifications for this item yet.

Questions about this item

Is the 128 MB cache on the AAR-2820SA sufficient for an eight-drive SATA array?

The 128 MB cache on the AAR-2820SA provides write-back acceleration for all eight SATA ports, which is the standard buffer size for this class of RAID controller.

What does the 2820 model number indicate about real-world throughput?

The 2820 model number identifies this as an eight-port SATA RAID controller with 128 MB cache, designed for internal server storage arrays.

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