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Silver 3.5 inch SAS hard drive bare drive, model ST32000645SS

Seagate

Seagate ST32000645SS 2TB 7200 RPM 64MB SAS 6Gb/s 3.5" internal hard drive

SKU CH-C3DJ-J8KBD MPN ST32000645SS

A 3.5 inch SAS hard drive with 2TB capacity, 7200 RPM speed and 64MB cache for continuous server operation

  • Total capacity2 TB
  • Interface typeSAS 6Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory64 MB
  • Built for 24×7 server reliability with fifth-generation SAS design
  • 2TB capacity stores large datasets on a single 3.5" drive
  • 7200 RPM spindle speed delivers fast sequential data access
  • 64MB cache buffers bursts for smoother throughput
  • SAS 6Gb/s interface provides 7.2Gb/s transfer rate for enterprise arrays

Enterprise drive identity

This is a Seagate Constellation ES.2 bare drive with 2TB capacity, 7200 RPM spindle speed and 64MB cache. It uses a SAS 6Gb/s interface in a 3.5 inch form factor and is built for 24×7 operation in server environments.

Suitability profile

The drive suits administrators who need a high-reliability SAS disk for continuous workloads in storage arrays or servers. Buyers who require a different interface or a larger capacity should consider other options.

Deciding specification

The SAS 6Gb/s interface is the single factor that determines compatibility; the drive will only function with a SAS host bus adapter or a controller that explicitly supports SAS signalling.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $167.99
Pricier than about 63% of the 4,938 comparable items (median $107.99).
Total capacity 2 TB
Typical for this category: the median of 2,372 items is 2 TB.
Price per TB $84.00 per TB
Pricier than about 59% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineConstellation ES.2
Model nameST32000645SS
Total capacity2 TB
Recommended useIdeal for Servers
Performance
Rotational speed7,200 RPM
Mean latency6Gb/s
Storage
Cache memory64 MB
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.66 kg
Package size178 × 133 × 38 mm

Questions about this item

What real-world throughput does the SAS 6Gb/s interface on the ST32000645SS deliver?

The SAS 6Gb/s interface caps at 6Gb/s transfer rate; actual sustained throughput depends on the 7200 RPM platters and 64MB cache, and will be lower than the interface maximum.

What physical space and mounting does the 3.5" ST32000645SS require?

The drive uses a standard 3.5" form factor and fits any 3.5" drive bay with SAS backplane or cable connectors; no tray is included with this bare drive.

How is the ST32000645SS installed in a server, and what step is often missed?

Mount the bare drive in a 3.5" bay, attach SAS data and power cables, then configure the drive in the RAID or HBA BIOS so the OS can see the 2TB volume.

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