Home CheckOut Log In/Register Log Out About Us Contact Us Call Us Privacy policy

3.5" SAS Drives

Seagate Exos X16 ST10000NM002G 3.5" SAS 12Gb/s 10TB 7200rpm
Seagate ST10000NM002G
ex.VAT £266.00 £319.20
10TB 7200 RPM
Exos X16
Seagate alternative
Western Digital WD Ultrastar DC HC550 (512e) SE WUH721818AL5204  0F38353 3.5" SAS 12Gb/s 18TB 7200rpm
Western Digital WD WUH721818AL5204 0F38353
ex.VAT £412.00 £494.40
18TB 7200 RPM
Ultrastar DC HC550 (512e) SE
Western Digital WD alternative
Seagate Exos 7E8 (512n) ST1000NM001A 3.5" SAS 12Gb/s 1TB 7200rpm
Seagate ST1000NM001A
ex.VAT £83.00 £99.60
1TB 7200 RPM
Exos 7E8 (512n)
Seagate alternative
Toshiba Enterprise (512e) MG04SCA20EE 3.5" SAS 12Gb/s 2TB 7200rpm
Toshiba MG04SCA20EE
ex.VAT £96.00 £115.20
2TB 7200 RPM
Enterprise (512e)
Toshiba alternative
Seagate Exos 7E8 (512e) ST2000NM004A 3.5" SAS 12Gb/s 2TB 7200rpm
Seagate ST2000NM004A
ex.VAT £107.00 £128.40
2TB 7200 RPM
Exos 7E8 (512e)
Seagate alternative
Toshiba Enterprise (512e) MG04SCA40EE 3.5" SAS 12Gb/s 4TB 7200rpm
Toshiba MG04SCA40EE
ex.VAT £136.00 £163.20
4TB 7200 RPM
Enterprise (512e)
Toshiba alternative
Why People Choose Us?

14 Day Return Guarantee

If you change your mind, you can return all or part of your order.

Next Day Delivery

Order before 4pm*, and in-stock products will be with you the next day. (Or Saturday. Or even Same Day).

WorldWide Deliveries

Wherever you are in the world, we can get your order to you at high speed.

SpanStor Build & Test

Our free service helps you choose the right NAS and Drives, then makes sure it is built & ready to use as soon as you get it.

Professional Live Support

We are here to assist you - before, during and after your purchase, by phone, email or live chat.

SPAN.COM Local Map:
2.9 Miles from New Malden (KT3). 3.2 Miles from Kingston Upon Thames (KT). 3.7 Miles from Esher (KT10). 5.9 Miles from Hampton (TW12). 2.8 Miles from Thames
Ditton (KT7). 7.1 Miles from Richmond (TW9). 5.9 Miles from Wimbledon (SW19). 5.7 Miles from Teddington (TW11). 10.8 Miles from Earlsfield (SW18). 8.3 Miles from Mitcham (CR4). 12.7 Miles from Croydon (CR). 13 Miles from Center of London (WC).

Pay by Paypal pay by card

© 1994-2021 Worldspan Communications Ltd
Call us on [+44] (0)20 3773 7190

Privacy policy

Terms and conditions

We use cookies to give you the best experience possible. By continuing to navigate through this site you consent to the use of cookies in accordance with our Cookies Policy

Mobile View / Desktop View

3.5" SAS Drives

biggest NAS HDD!
biggest WD NAS HDD!
bg image

Sort By:

Show More Results...

A hard disk drive (HDD) is a data storage device used for storing and retrieving digital information using rapidly rotating discs (platters) coated with magnetic material. An HDD retains its data even when powered off. Data is read in a random-access manner, meaning individual blocks of data can be stored or retrieved in any order rather than just sequentially. An HDD consists of one or more rigid ("hard") rapidly rotating discs (platters) with magnetic heads arranged on a moving actuator arm to read and write data to the surfaces.

Introduced by IBM in 1956, HDDs became the dominant secondary storage device for general purpose computers by the early 1960s. Continuously improved, HDDs have maintained this position into the modern era of servers and PCs. More than 200 companies have produced HDD units, though most current units are manufactured by Seagate, Toshiba and Western Digital. Worldwide revenues for HDDs shipments are expected to reach $38 billion in 2012, up about 19% from $32 billion in 2011.

The primary characteristics of an HDD are its capacity and performance. Capacity is specified in unit prefixes corresponding to powers of 1000: a 1-terabyte (TB) drive has a capacity of 1,000 gigabytes (GB; where 1 gigabyte = 1 billion bytes). Typically, some of an HDD's capacity is unavailable to the user due to use by the file system and the computer operating system, and possibly inbuilt redundancy for error correction and recovery. Performance is specified by the time to move the heads to a file (Average Access Time) plus the time it takes for the file to move under its head (average latency, a function of the physical rotational speed in revolutions per minute) and the speed at which the file is transmitted (data rate).

The two most common form factors for modern HDDs are 3.5-inch in desktop computers and 2.5-inch in laptops. HDDs are connected to systems by standard interface cables such as SATA (Serial ATA), USB or SAS (Serial attached SCSI) cables.

Serial Attached SCSI (SAS) is a point-to-point serial protocol that moves data to and from computer storage devices such as hard drives and tape drives. SAS replaces the older Parallel SCSI (pronounced "scuzzy") bus technology that first appeared in the mid-1980s. SAS, like its predecessor, uses the standard SCSI command set. SAS offers backward compatibility with second-generation SATA drives. SATA 3 Gbit/s drives may be connected to SAS backplanes, but SAS drives cannot connect to SATA backplanes.

This article is licensed under the GNU Free Documentation License. It uses material from the following Wiki article(s) :
* Hard_disk_drive
* Serial_Attached_SCSI

Buy 3.5" SAS Drives from NAS Experts in UK with Global shipping- FREE ✓BUILD ✓RAID ✓TEST ✓BUSINESS QUOTES | SPAN.COM
☎Call for pricing 020 8288 8555 ✓Free Advice ✓Lowest Price often available

We use cookies to give you the best experience possible. By continuing to navigate through this site you consent to the use of cookies in accordance with our Cookies Policy