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Expsas R644 RAID Adapter X8 PCIe 2 To-6gb / Mfr. No.: Esas-R644-000

Expsas R644 RAID Adapter X8 PCIe 2 To-6gb / Mfr. No.: Esas-R644-000
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Item Number: att-esasr644000
Vendor Number: ESAS-R644-000
Vendor: Atto Technology
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The ExpressSAS R644 RAID adapter provides 6Gb/s SAS/SATA connectivity to Direct Attached Storage via 4 external and 4 internal ports. With transfer rates of up to 1200MB/s per port, the R644 is well suited for high-bandwidth workflows, such as digital content creation, streaming video and audio, transactional databases, and email and Web servers.

The R644 combines advanced engineering and innovative features to ensure smooth data transfers and consistent performance. Leveraging ATTO's market-tested RAID stack and exclusive latency management features, the R644 helps customers create, share and protect data and digital assets more effectively.

General Information

ManufacturerAtto Technology
Manufacturer Part NumberESAS-R644-000
Manufacturer Website Address
Product LineExpressSAS
Product ModelR644
Product NameExpressSAS R644
Product TypeSAS Controller

Technical Information

Host InterfacePCI Express 2.0 x8
Controller Type6Gb/s SAS
RAID SupportedYes


Total Number of SAS Ports8
Number of SAS Ports (Internal)4
Number of SAS Ports (External)4

Physical Characteristics

Form FactorPlug-in Card
Card HeightLow-profile
Weight (Approximate)1.20 lb


Package Contents
  • ExpressSAS R644 4-port SAS RAID Controller
  • Full-height Bracket
Platform SupportedMac
Green CompliantYes
Green Compliance Certificate/AuthorityRoHS-6
Country of OriginUnited States


Limited Warranty3 Year
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