20 TB, SE, SATA, 3.5 Inch, 512MB, 6 GB/s, 101.6 x 26.162 x 147 mm, 690 g
20TB capacity with a reimagined HDD
An innovative storage architecture to help our customers meet their need for exponential data growth.
Reimagining the HDD for Exponential Data Growth
Hyperscale cloud, CSPs, enterprises, smart video surveillance partners, NAS suppliers and more need storage solutions to meet the exponential growth in data creation. When it comes to cost-effective storage of data at scale, hard disk drives (HDDs) continue to play a central role. HDDs deliver the capacity, performance and reliability needed to store vast amounts of data today and well into the future. Investments in HDD technology remain critical to supporting worldwide data growth.
Western Digital has developed flash-enhanced drives with OptiNAND™ technology by vertically integrating our leading NAND flash with our world-class HDDs. Western Digital HDDs have been leaders in areal density with industry first technologies of energy-assisted magnetic recording technology (EAMR), triple-stage actuator (TSA), HelioSeal®, and now OptiNAND technology. Higher areal density means higher capacities to meet storage challenges.
20TB1 HDDs with OptiNAND Technology
OptiNAND integrates an iNAND® Universal Flash Storage (UFS) Embedded Flash Drive (EFD) with traditional spinning disk media, and incorporates innovative changes to the firmware algorithm and system-on-a-chip (SoC). OptiNAND is not a hybrid technology. The drive works smarter, with enhanced firmware algorithms taking advantage of expanded metadata that has been offloaded to the iNAND, enabling more tracks per inch (TPI) with resulting increased areal density.
The Ultrastar DC HC560, with the first implementation of OptiNAND technology’s capacity-enabling features, delivers an unbeaten 20TB capacity in a nine-disk platform (2.2TB/platter) with CMR recording format
| Features |
| Linux operating systems supported |
Yes |
| Windows operating systems supported |
Yes |
| Mean time between failures (MTBF) |
2.5 h |
| Workload rate limit |
550 TB/year |
| 24/7 operation |
Yes |
| Uncorrectable Bit Error Rate (UBER) |
< 1 per 10^15 bits read |
| Average latency |
4.16 ms |
| HDD sustained transfer rate |
257 MiB/s |
| HDD interface transfer rate |
6 Gbit/s |
| Storage drive buffer size |
512 MB |
| Component for |
Server/workstation |
| Type |
HDD |
| Interface |
Serial ATA |
| HDD speed |
7200 RPM |
| HDD capacity |
20 TB |
| HDD size |
3.5" |
| Power |
| Operating voltage |
5 / 12 V |
| Operational conditions |
| Non-operating shock |
250 G |
| Operating shock |
50 G |
| Non-operating vibration |
1.04 G |
| Operating vibration |
0.7 G |
| Storage temperature (T-T) |
-40 - 70 °C |
| Operating temperature (T-T) |
5 - 60 °C |
| General |
| Product Family |
Ultrastar |
| Weight & dimensions |
| Weight |
690 g |
| Height |
147 mm |
| Depth |
26.2 mm |
| Width |
101.6 mm |
| Logistics data |
| Harmonized System (HS) code |
84717050 |

Have you ever thought of trading in your old smartphone?
Recycling your phone is a great way to help the environment and earn some extra money, and Clove Technology offers a recycling programme that pays you for your old phone(s)!
So if you're about to buy a new phone from us, or you've recently bought one, why not sell us the handset you no longer need?
How much will you offer for my phone?
That depends on its age and condition. More recent phones generally have a higher value than old ones, but other factors can affect value. These include if the phone is working or not and its network lock status. Fully working phones with an unlocked network status will command a higher value if they are in good condition.
We pledge to beat the major recycling services operating in the UK on the price they offer for your
How do I get my phone(s) back to you?
On our recycling site SEARCH, for your phone and provide details of its status and condition. We will then offer you a price for your phone. If you choose the option to Sell Now, a recycling pack to you for returning your phone.
Alternatively, you can call our recycling team on 0330 1180686, choosing option 2.