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Silver 2.5 inch enterprise hard drive with green circuit board

HP

HP 507125-B21 146GB 10000 RPM SAS 6Gb/s 2.5" SFF laptop hard drive

SKU CH-2NR3-1Y8RK MPN 507125-B21

146 GB 10000 RPM SAS 6Gb/s 2.5" SFF enterprise drive for high-performance server storage

  • Total capacity146 GB
  • Interface typeSAS 6Gb/s
  • Form factor2.5 in SFF
  • Average seek time4 ms
  • Rotational speed10,000 RPM
  • Key featuresSerial Attached SCSI (SAS) provides a superior storage solut
  • 10000 RPM spindle speed delivers fast data access
  • SAS 6Gb/s interface supports high-throughput enterprise workloads
  • 146 GB capacity fits critical applications in a compact drive
  • 5 inch SFF form factor suits dense server and storage arrays
  • 4 ms average seek time reduces latency for transaction-heavy tasks

HP Enterprise 146GB 10000 RPM SAS Drive

This HP Enterprise 507125-B21 is a 2.5-inch Small Form Factor internal hard drive built for enterprise laptops and servers. It delivers 146GB of storage on a SAS 6Gb/s interface with a 10000 RPM spindle speed and a 4ms average seek time.

Suits SAS-Compatible Enterprise Systems

It fits 2.5-inch SFF bays that support SAS 6Gb/s signalling and benefit from high spindle speeds for transactional workloads. It is not for systems that lack a SAS controller or that require a larger capacity than 146GB.

SAS 6Gb/s Interface Decides Compatibility

The drive communicates exclusively over a Serial Attached SCSI 6Gb/s link, so the host must provide a matching SAS backplane or controller. Without that interface the drive will not function.

How it compares

Measured against everything we stock in 2.5-Inch Internal Laptop HDDs, at today’s prices. Recalculated every night.

Price $101.99
Pricier than about 66% of the 645 comparable items (median $66.99).
Total capacity 146 GB
Lower than about 80% of the 419 comparable items (median 320 GB).
Price per TB $698.56 per TB
Pricier than about 83% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameHP
Product lineEnterprise
Model name507125-B21
Total capacity146 GB
Performance
Average seek time4 ms
Rotational speed10,000 RPM
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor2.5 in SFF
Shipping weight1.36 kg
Package size178 × 127 × 51 mm

Questions about this item

Does the 2.5" SFF form factor fit a standard 2.5" drive bay or caddy?

Yes, the 2.5" SFF form factor matches standard 2.5-inch drive bays and caddies used in compatible HP servers and enclosures.

What is the correct SAS backplane insertion procedure for the 507125-B21?

Align the SAS connector with the backplane port and press firmly until the drive clicks into the latch; the common error is stopping before the latch engages.

When should the 146GB 10000 RPM drive be replaced in a 24×7 array?

Replace the drive when SMART attributes report reallocated sectors or when the array controller flags a predictive failure alert.

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