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Seagate 2.5 inch SAS hard drive, bare silver metal casing, label on side

Seagate

Seagate ST1200MM0017 1.2TB 10000 RPM 64MB SAS 2.5" internal hard drive

SKU CH-WC5A-B1Q89 MPN ST1200MM0017

1.2TB 10000 RPM SAS 6Gb/s 2.5-inch enterprise drive with 64MB cache for high-performance storage

  • Total capacity1.2 TB
  • Interface typeSAS 6Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Rotational speed10,000 RPM
  • Cache memory64 MB
  • 2TB capacity supports write-intensive enterprise workloads
  • 10000 RPM spindle speed delivers 2.9ms average latency
  • SAS 6Gb/s interface enables fast data transfer rates
  • 64MB cache buffers bursts for consistent performance
  • 5-inch form factor fits dense server and storage arrays

Enterprise 10K SAS Drive

The Seagate ST1200MM0017 is a 1.2TB 2.5-inch internal hard drive built for enterprise storage. It spins at 10000 RPM with a 64MB cache and connects through a SAS 6Gb/s interface. The bare drive delivers 1200GB of high-performance data access for write-intensive applications. Average latency is rated at 2.9ms.

Suits high-IO enterprise arrays

This drive fits servers and storage arrays that require 10K SAS performance in a 2.5-inch form factor. It supports Seagate ISE technology and RAID Rebuild technology for enterprise deployments. It is not for systems that only accept 3.5-inch drives or that lack a SAS 6Gb/s host interface. Buyers needing a different capacity or a non-SAS interface should consider other models.

SAS 6Gb/s interface decides fit

The single specification that determines compatibility is the SAS 6Gb/s interface. The host system must provide a SAS backplane or controller that supports this transfer rate. Without a SAS connection the drive cannot operate.

How it compares

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

Price $310.99
Pricier than about 83% of the 4,938 comparable items (median $107.99).
Total capacity 1.2 TB
Lower than about 58% of the 2,372 comparable items (median 2 TB).
Price per TB $259.16 per TB
Pricier than about 82% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineEnterprise Performance 10K.7
Model nameST1200MM0017
Total capacity1.2 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed10,000 RPM
Mean latency2.9 ms
Storage
Cache memory64 MB
Ports & slots
Interface typeSAS 6Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Shipping weight0.20 kg
Package size142 × 102 × 25 mm

Questions about this item

Will this 2.5" SAS drive fit in a 3.5" bay with an adapter?

The drive uses a 2.5" form factor and a SAS 6Gb/s interface. A 2.5"-to-3.5" adapter and a SAS host bus adapter or controller are required for a 3.5" bay.

Can this 10K RPM SAS drive share a backplane with 15K RPM drives?

Yes. The 10,000 RPM drive operates on the same SAS 6Gb/s backplane as 15K RPM drives, though the higher-speed drives will complete seeks faster.

How do I confirm the 64MB cache is active after installation?

Check the drive's reported cache size in the RAID controller BIOS or OS device manager; it should list 64MB for this model.

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