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Twenty bare 3.5 inch enterprise SAS drives in bulk packaging

Seagate

Seagate Cheetah 15K.7 ST3600057SS-20PK 600GB 15000 RPM 16MB SAS 6Gb/s 3.5" 20 Pack internal hard drive

SKU CH-J2N6-W30G6

Twenty enterprise-grade 3.5" SAS drives deliver 600GB each at 15000 RPM with 16MB cache for high-throughput server workloads

  • Total capacity600 GB
  • Interface typeSAS 6Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed15,000 RPM
  • Cache memory16 MB
  • 15000 RPM spindle speed for fast transactional throughput
  • 600GB capacity per drive in a 20-pack bundle
  • SAS 6Gb/s interface for enterprise host connectivity
  • 16MB cache and 2ms average latency reduce access delays
  • 55% annualized failure rate with 1x10E16 unrecoverable error rate

Enterprise 20-Pack SAS Drives

This pack contains twenty new Seagate Cheetah 15K.7 enterprise hard drives, each offering 600GB capacity with a 15000 RPM spindle speed and 16MB cache. The drives use a SAS 6Gb/s interface and a 3.5-inch form factor, supplied as bare units without retail packaging. They are built for high-throughput server and storage arrays that demand sustained random I/O performance.

Suited for Multi-Drive Arrays

Storage architects populating rackmount enclosures or external JBODs with identical spindles will benefit from the matched firmware and consistent 2ms average latency across all twenty units. The quoted 0.55 percent annualized failure rate and 1x10E16 unrecoverable error rate support reliability planning for mission-critical workloads. Buyers who need a single drive or a smaller quantity should look elsewhere.

15000 RPM Spindle Speed

The 15000 RPM rotational speed is the decisive specification that determines whether this drive meets the required random-access latency for transaction-heavy databases or high-frequency logging. Lower-speed alternatives cannot deliver the same IOPS density, while the SAS 6Gb/s interface ensures the full throughput potential reaches the controller.

How it compares

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

Price $1,518.99
Pricier than about 91% of the 4,938 comparable items (median $107.99).
Total capacity 600 GB
Lower than about 76% of the 2,372 comparable items (median 2 TB).
Price per TB $2,531.65 per TB
Pricier than about 91% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineCheetah 15K.7
Model nameST3600057SS-20PK
Total capacity600 GB
Performance
Rotational speed15,000 RPM
Mean latency2 ms
Storage
Cache memory16 MB
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

Will the 15000 RPM spindle motor need scheduled bearing replacement?

The drive carries an annualized failure rate of .55 percent, indicating the spindle assembly is rated for continuous enterprise operation without scheduled bearing service.

What limit appears first when the SAS 6Gb/s link runs sustained writes at 15000 RPM?

The 16MB cache and 2ms average latency bound burst absorption before the 6Gb/s interface saturates during prolonged write streams.

How much heat and noise does a 3.5 inch 15000 RPM drive produce running all day?

Enterprise 15000 RPM 3.5 inch drives typically require forced-air cooling and generate audible seek noise above idle office levels during continuous duty.

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