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Silver 3.5 inch SAS enterprise hard drive with label showing model ST33000650SS

Seagate

Seagate ST33000650SS 3TB 7200 RPM 64MB SAS 6Gb/s 3.5" internal hard drive

SKU CH-Y57P-P5H83 MPN ST33000650SS

3 TB enterprise SAS drive with 7200 RPM, 64 MB cache and 8.5 ms average seek time for 24×7 server workloads

  • Interface typeSAS 6Gb/s
  • Form factor3.5 in (8.89 cm)
  • Cache memory64 MB
  • Average seek time8.5 ms
  • Mean write time9.5 ms
  • Mean latency4.16 ms
  • 3TB capacity for large-scale enterprise storage
  • 7200 RPM spindle speed for fast data access
  • 64MB cache buffer improves throughput
  • SAS 6Gb/s interface for server compatibility
  • 5ms average seek time reduces latency

Enterprise 3 TB SAS drive

This Seagate Constellation ES.2 model delivers 3 TB of storage on a 3.5 inch form factor with a SAS 6Gb/s interface. It spins at 7200 RPM and carries a 64 MB cache for sustained throughput in multi-drive arrays. The unit is supplied new and built for continuous 24×7 operation in server environments.

Suited for RAID arrays and bulk storage

Buyers deploying SAS-based servers or external JBOD enclosures will match the drive’s native interface and firmware tuning. Systems that lack a SAS backplane or hardware RAID controller cannot use this drive, so desktop builders without that infrastructure should look elsewhere.

SAS 6Gb/s interface decides fit

The single specification that determines compatibility is the SAS 6Gb/s connection; the host must present a matching SAS port or expander. Average seek time is 8.5 ms, average write time is 9.5 ms and average latency is 4.16 ms, figures that confirm enterprise-class responsiveness.

How it compares

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

Price $58.99
Cheaper than about 71% of the 4,938 comparable items (median $107.99).

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Specifications

Product
Brand nameSeagate
Product lineConstellation ES.2
Model nameST33000650SS
Recommended useIdeal for Servers
Performance
Average seek time8.5 ms
Mean write time9.5 ms
Mean latency4.16 ms
Rotational speed7,200 RPM
Storage
Cache memory64 MB
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight1.36 kg
Package size160 × 122 × 33 mm

Questions about this item

Will the 7200 RPM spindle speed cause the drive to overheat in a 24×7 server?

The Constellation ES.2 series is designed for 24×7 operation with best-in-class energy efficiency to manage heat during sustained use.

How much audible noise does the 3.5" mechanism produce under constant load?

Enterprise drives of this class are engineered for rack environments where acoustic levels are secondary to reliability and throughput.

What SAS infrastructure is needed to run this 6Gb/s drive?

A SAS 6Gb/s compatible host bus adapter, RAID controller or server backplane is required for the drive to function.

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