What is the capacity and form factor of the Seagate ST91000641SS?

The drive provides 1TB capacity in a 2.5-inch SFF form factor with 15mm z-height. This design suits space-constrained data centers and servers accepting 2.5 x 15mm SAS drives.

What are the performance specifications?

It operates at 7200 RPM with 64MB cache and SAS-2 6Gbps electrical interface. These specs support nearline enterprise applications requiring reliable data access.

Is this a self-encrypting drive?

Yes, the ST91000641SS is the SED model of the Constellation.2 series, featuring self-encrypting drive capabilities and protection information. It is not the FIPS 140-2 certified variant.

What interface does it use?

The drive uses SAS 6Gbps interface, compatible with servers designed for SAS drives in 2.5-inch SFF format.

What is the weight of the drive?

The Seagate ST91000641SS weighs 0.441 lb or 200g, making it suitable for high-density server installations.

ST91000641SS - Seagate ST91000641SS 1TB 7200 RPM SAS SED Drive

Name: Seagate ST91000641SS 1TB 7200 RPM SAS SED Drive
Brand: Seagate
SKU: ST91000641SS

ST91000641SS - Seagate ST91000641SS 1TB 7200 RPM SAS SED Drive | US IT Hardware

Product overview

The Seagate Constellation.2 ST91000641SS is a 1TB SAS hard disk drive designed for enterprise use. It features a 2.5-inch small form factor (SFF) with 15mm z-height, suitable for space-constrained data centers. The drive operates at 7200 RPM with a 64MB cache buffer and SAS-2 6Gbps electrical interface. As a self-encrypting drive (SED) model, it provides data protection capabilities. It includes protection information features and is compatible with servers accepting 2.5 x 15mm SFF SAS drives. The drive weighs 0.441 lb (200g) and is ROHS compliant. This nearline drive supports 24x7 operation in dense storage environments.

1TB capacity, 2.5-inch SFF form factor
7200 RPM speed, 64MB cache buffer
SAS 6Gbps interface, SED model
Compatible with 2.5x15mm SFF SAS servers
Nearline enterprise drive design
ROHS compliant, 0.441 lb weight

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Spindle Speed
Manufacturer part #	ST91000641SS
Brand	Seagate
Condition	New
Cache	64MB
Model	ST91000641SS
Capacity	1TB
SED Model	Yes
Idle Power	3.85 W
Form Factor	2.5" SFF Server Drive
Product Line	Constellation.2
Product Type	Nearline Self-Encrypting Drive

Compatible systems

Compatible with servers accepting 2.5-inch 15mm SFF SAS drives

Any Server
Form factor: 2.5x15mm SFF
Compatible with any server that accepts 2.5x15mm SFF SAS drives

Best for

Enterprise Servers
Compatible with servers accepting 2.5 x 15mm SFF SAS drives, providing 1TB capacity at 7200 RPM.
Space-Constrained Data Centers
2.5-inch form factor with 15mm z-height enables high-density storage solutions.
Nearline Applications
7200 RPM speed and SAS 6Gbps interface support reliable bulk data storage.
Secure Data Storage
SED model offers self-encrypting features for data protection in enterprise environments.

Average Latency	4.16 ms
Max Sustained Transfer Rate	115 MB/s
Seek Time Average Read/Write	8.5/9.5 ms

Interface	SAS 6Gbps
Interface Ports	Dual
Electrical Interface	SAS-2 6Gbps
Interface Access Speed	6.0, 3.0, 1.5 Gb/s

Seagate ST91000641SS 1TB 7200 RPM SAS SED Drive

Product overview

Featuring

Compatible systems

Best for

Frequently asked questions

Details

Shipping, warranty & returns

Customer reviews

Performance

Power Consumption

Networking Ports & Interfaces

Seagate ST91000641SS 1TB 7200 RPM SAS SED Drive

Product overview

Featuring

Compatible systems

Best for

Frequently asked questions

Details

Shipping, warranty & returns

Customer reviews

Shop these collections

Performance

Power Consumption

Networking Ports & Interfaces