What is the MTBF of the Constellation.2 ST91000640NS?

1,400,000 hours, with a 0.62% annualized failure rate.

How fast is the ST91000640NS?

7,200 RPM, with transfers up to 115 MB/s over SATA 6Gb/s.

Which conditions is the ST91000640NS available in?

New or Refurbished with 1 year or 3 years of warranty, or Used with 90 days.

Seagate

Seagate Constellation.2 1TB 7.2K SATA 6G SFF Hard Drive

Name: Seagate Constellation.2 1TB 7.2K SATA 6G SFF Hard Drive
Brand: Seagate
SKU: ST91000640NS

MPNST91000640NS

Seagate Constellation.2 ST91000640NS is a 1TB 7,200 RPM SATA 6Gb/s enterprise hard drive in a 2.5in SFF format, for servers with small-form-factor drive bays.

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Tested, cleaned and graded. Fully functional, with warranty.

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Seagate Constellation.2 1TB 7.2K SATA 6G SFF Hard Drive

ST91000640NS · Refurbished · 1 year warranty

Quantity (units)

Overview

Seagate Constellation.2 ST91000640NS is a 1TB enterprise hard drive in the 2.5in SFF size used by many servers. It spins at 7,200 RPM and connects through a single SATA 6Gb/s port.

SFF drives let a server fit more bays in the same front panel, and this model brings enterprise ratings to that format: an MTBF of 1,400,000 hours and an annualized failure rate of 0.62%.

The rest of the specs:

- 512n sector format - 64MB cache - Up to 115 MB/s - 3.31 W idle, 5.21 W operating - 200 g

It fits servers and storage enclosures with 2.5in SATA bays, for boot volumes or general storage where SATA SFF drives are already in use.

It is offered New, Refurbished or Used. New and Refurbished units come with 1 year or 3 years of warranty, and Used units come with 90 days.

Specifications

Seagate ST91000640NS specifications
Manufacturer part number	ST91000640NS
Brand	Seagate
Cache	64 MB
Weight g	200
Interface	SATA
Drive type	HDD
Mtbf hours	1,400,000
Afr percent	0.62
Form factor	2.5in SFF
Idle power w	3.31
Product line	Constellation.2
Sector format	512n
Capacity	1TB
Warranty years	5
Interface ports	Single
Operating power w	5.21
Interface speed	6 Gb/s
Rotational speed	7,200 rpm
Max transfer rate mbs	115

Specifications from the manufacturer's datasheet ↗

FAQ

What form factor is the Seagate ST91000640NS?: 2.5in SFF.
What is the MTBF of the Constellation.2 ST91000640NS?: 1,400,000 hours, with a 0.62% annualized failure rate.
How fast is the ST91000640NS?: 7,200 RPM, with transfers up to 115 MB/s over SATA 6Gb/s.
Which conditions is the ST91000640NS available in?: New or Refurbished with 1 year or 3 years of warranty, or Used with 90 days.