Products > Hard Drives > Enterprise SATA 2.5 drive
Seagate HDD ST91000640NS Constellation.2 1TB SATA 6Gb/s 7200rpm 64MB Cache Bare Drive

Model :
SKU : 108111
Vendor : Seagate
MPN : ST91000640NS

The Seagate® Constellation.2™ drive is the only 2.5-inch enterprise-class hard drive delivering both 1TB capacities and enterprise reliability at the industry’s lowest power consumption for storage-hungry nearline applications. Self-Encrypting Drive (SED) options available to protect data-at-rest.*

1. Maximizes data center footprint with up to 76TB per square foot

2. Energy efficient storage at under 3.9 watts (idle)

3. Highest nearline reliability with an MTBF of 1.4M hours

4. 6Gb/s performance in both SAS and SATA interfaces
Key Features:
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Detail Specifications:
Model Number :ST91000640SS
Interface :6-Gb/s SAS
Cache: 64MB
Capacity: 1TB
Areal density (avg): 417Gb/in2
Guaranteed Sectors :1,953,525,168
PERFORMANCE :
Spin Speed (RPM) :7200 RPM
Average latency :4.16ms
Random read seek time :8.5ms
Random write seek time :9.5ms
I/O data transfer rate :600MB/s
RELIABILITY :
MTBF: 1,400,000 hours
Annual Failure Rate :0.62%
POWER :
12V start max current 0.80A
5V start max current 0.72A
Average idle power 3.85W
Average operating power 6.4W
Shock :
Operating Shock (max): Read 70 / Write 40 Gs for 2ms
Nonoperating Shock (max): 400 Gs for 2ms
ACOUSTICS :
Acoustics (Idle Volume): 2.2 bels
Acoustics (Seek Volume) :2.8 bels
Features :
Storage Type :HDD

Item Dimension (L"xW"xH"):
3.96 x 2.76 x 0.58
Weight:
0.44 LB

Warranty Information:
5 Year