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Silver 3.5 inch bare hard drive with exposed circuit board

HP

HP 652757-B21 2TB 7200 RPM SAS 6Gb/s 3.5" LFF internal hard drive

SKU CH-8NX6-JSZHB MPN 652757-B21

A 3.5" SAS 6Gb/s internal drive with 2TB capacity and 7200 RPM spindle speed for server storage

  • Total capacity2 TB
  • Interface typeSAS 6Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeHard Drives
  • Rotational speed7,200 RPM
  • 2 TB capacity stores large server datasets
  • 7200 RPM spindle speed enables quick data access
  • SAS 6Gb/s interface supports 6144 MB/s transfer rate
  • 5 inch LFF form factor fits ProLiant DL360 DL380 ML350
  • 60 lb weight simplifies drive installation

2 TB SAS drive for servers

The HP 652757-B21 is a 2 TB internal hard drive built for server workloads. It spins at 7200 RPM and uses a SAS 6Gb/s interface. The 3.5 inch LFF form factor fits standard enterprise bays.

SAS 6Gb/s interface bandwidth ceiling

The SAS 6Gb/s link tops out at 48 Gbit/s, which translates to a 6144 MB/s maximum external transfer rate. Real-world throughput will sit below that ceiling once protocol overhead and drive mechanics are factored in.

2 TB capacity for mid-range datasets

Two terabytes handles operating systems, logs and moderate databases without difficulty. Heavier archival or media libraries will outgrow the space and require additional drives.

How it compares

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

Price $480.99
Pricier than about 90% 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 $240.50 per TB
Pricier than about 81% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameHP
Model name652757-B21
Total capacity2 TB
Recommended useIdeal for Servers
Performance
Rotational speed7,200 RPM
Mean latency6Gb/s
Storage
Flash memory typeHard Drives
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight1.59 kg
Package size229 × 178 × 117 mm

Questions about this item

Should I choose the 2TB version or a different capacity for my server?

This model provides 2TB of storage on a 3.5-inch SAS drive. If your server bay and controller support SAS 6Gb/s, the 2TB capacity fits midline workloads. Larger or smaller SAS capacities exist in the same form factor, so match the drive to your array size and budget.

What does the 7200 RPM spindle speed mean for actual server performance?

At 7200 RPM the drive delivers a maximum external transfer rate of 6144 MB/s over the SAS 6Gb/s link. Average latency is 6Gb/s. This suits sequential read and write tasks in HP ProLiant Gen8 servers such as the DL360, DL380 and ML350.

How does the SAS 6Gb/s interface limit real-world throughput?

The SAS 6Gb/s interface caps the external data rate at 6144 MB/s. The drive itself spins at 7200 RPM, so sustained throughput will sit at or below that ceiling. Your RAID controller and backplane must also support 6Gb/s SAS to reach the rated speed.

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