WD NAS drive vendor: Western Digital (WD)

[SynoMan]

Hard Disk Drive (HDD)	Solid State Drive (SSD)
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Read more... on official site​	Read more... on official site​

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[jeyare]

details valid from May 10th, 2020, link:

Series

Model No.

Interface

Capacity

Drive bays Supported

PMR standard

Max. Sustained Transfer Rate OD (MB/s) from Product sheet

Max. Sustained Transfer Rate OD (MB/s) from Product manual

Spindle Speed (RPM)

Cache

Workload Rate Limit

Avg. Seek time (read in ms)

Avg. Seek time (write in ms)

Avg. Latency (ms)

Areal density (Gb/in2)

Platters​

Red

WD10EFRX

SATA

1 TB

1-8 bays

CMR

150

can't find

5 400

64

180

n/a

n/a

n/a

n/a

n/a

Red

WD20EFRX

SATA

2 TB

1-8 bays

CMR

147

can't find

5 400

64

180

n/a

n/a

n/a

n/a

n/a

Red

WD20EFAX

SATA

2 TB

1-8 bays

SMR

180

can't find

5 400

256

180

n/a

n/a

n/a

n/a

n/a

Red

WD30EFRX

SATA

3 TB

1-8 bays

CMR

147

can't find

5 400

64

180

n/a

n/a

n/a

n/a

n/a

Red

WD30EFAX

SATA

3 TB

1-8 bays

SMR

180

can't find

5 400

256

180

n/a

n/a

n/a

n/a

n/a

Red

WD40EFRX

SATA

4 TB

1-8 bays

CMR

150

can't find

5 400

64

180

n/a

n/a

n/a

n/a

n/a

Red

WD40EFAX

SATA

4 TB

1-8 bays

SMR

180

can't find

5 400

256

180

n/a

n/a

n/a

n/a

n/a

Red

WD60EFRX

SATA

6 TB

1-8 bays

CMR

175

can't find

5 400

64

180

n/a

n/a

n/a

n/a

n/a

Red

WD60EFAX

SATA

6 TB

1-8 bays

SMR

180

can't find

5 400

256

180

n/a

n/a

n/a

n/a

n/a

Red

WD80EFAX

SATA

8 TB

1-8 bays

CMR

198

can't find

5 400

256

180

n/a

n/a

n/a

n/a

n/a

Red

WD100EFAX

SATA

10 TB

1-8 bays

CMR

210

can't find

5 400

256

180

n/a

n/a

n/a

n/a

n/a

Red

WD101EFAX

SATA

10 TB

1-8 bays

CMR

215

can't find

5 400

256

180

n/a

n/a

n/a

n/a

n/a

Red

WD120EFAX

SATA

12 TB

1-8 bays

CMR

196

can't find

5 400

256

180

n/a

n/a

n/a

n/a

n/a

Red

WD140EFFX

SATA

14 TB

1-8 bays

CMR

210

can't find

5 400

512

180

n/a

n/a

n/a

n/a

n/a

 

[jeyare]

details valid from May 10th, 2020, link:

Series

Model No.

Interface

Capacity

Drive bays Supported

PMR standard

Max. Sustained Transfer Rate OD (MB/s) from Product sheet

Max. Sustained Transfer Rate OD (MB/s) from Product manual

Spindle Speed (RPM)

Cache

Workload Rate Limit

Avg. Seek time (read in ms)

Avg. Seek time (write in ms)

Avg. Latency (ms)

Areal density (Gb/in2)

Platters

Red Pro

WD2002FFSX

SATA

2 TB

≤ 24 bays

CMR

164

can't find

7 200

64

300

n/a

n/a

n/a

n/a

n/a

Red Pro

WD4003FFBX

SATA

4 TB

≤ 24 bays

CMR

217

can't find

7 200

256

300

n/a

n/a

n/a

n/a

n/a

Red Pro

WD6003FFBX

SATA

6 TB

≤ 24 bays

CMR

238

can't find

7 200

256

300

n/a

n/a

n/a

n/a

n/a

Red Pro

WD8003FFBX

SATA

8 TB

≤ 24 bays

CMR

235

can't find

7 200

256

300

n/a

n/a

n/a

n/a

n/a

Red Pro

WD101KFBX

SATA

10 TB

≤ 24 bays

CMR

240

can't find

7 200

256

300

n/a

n/a

n/a

n/a

n/a

Red Pro

WD102KFBX

SATA

10 TB

≤ 24 bays

CMR

265

can't find

7 200

256

300

n/a

n/a

n/a

n/a

n/a

Red Pro

WD121KFBX

SATA

12 TB

≤ 24 bays

CMR

240

can't find

7 200

256

300

n/a

n/a

n/a

n/a

n/a

Red Pro

WD141KFGX

SATA

14 TB

≤ 24 bays

CMR

255

can't find

7 200

512

300

n/a

n/a

n/a

n/a

n/a