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Silver 2.5 inch SAS hard drive with green circuit board visible on underside

Seagate

Seagate ST91000640SS Constellation 1TB 7200RPM 6Gbps SAS 2.5in internal hard drive

SKU CH-MF18-JY3CE

A 2.5in SAS hard drive holding 1000GB at 7200RPM with 64MB cache and 1.4M-hour MTBF for 24×7 enterprise use

  • 1TB capacity for dense data storage
  • 7200RPM spindle speed for fast sequential access
  • 6Gbps SAS interface for reliable enterprise connectivity
  • 64MB cache buffer to accelerate read/write operations
  • 4M hours MTBF rating for 24×7 nearline reliability

Drive identity

This is a Seagate Constellation 2.5-inch SAS hard drive with a 1000GB capacity spinning at 7200RPM and a 64MB buffer. It connects through a 6Gbps SAS interface and is rated for 24×7 operation with a 1.4M-hour MTBF. The 2.5-inch form factor allows high density in space-constrained bays.

Who it suits

It suits administrators expanding nearline storage arrays or servers that require SAS connectivity and enterprise-class reliability. It is not for builds that lack a SAS backplane or controller. Buyers who need a different interface or larger single-drive capacity should look at other parts.

Deciding specification

The 6Gbps SAS interface is the single specification that determines compatibility. Verify that the host system provides a SAS port and supporting controller before purchasing.

Punti di forza

  • 1TB capacity for dense data storage
  • 7200RPM spindle speed for fast sequential access
  • 6Gbps SAS interface for reliable enterprise connectivity
  • 64MB cache buffer to accelerate read/write operations
  • 4M hours MTBF rating for 24×7 nearline reliability

Caratteristiche tecniche

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Domande su questo articolo

What SAS controller or backplane do I need to connect this 2.5in 6Gbps SAS drive?

A SAS host-bus adapter or RAID controller with a 6Gbps SAS port and a 2.5in drive bay or backplane that accepts SAS connectors.

Will this 7200RPM SAS drive work in a server that currently uses 3Gbps SAS disks?

Yes, the drive negotiates down to 3Gbps on older backplanes while keeping its 64MB cache and 1.4M-hour MTBF rating.

How can I verify the 64MB buffer and 7200RPM speed are active after installation?

Check the drive’s SMART data or controller BIOS; both will report 7200RPM rotational speed and a 64MB cache size.

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