Brand
 
 Seagate (72)
 
 Western Digital (36)
 
 Dell (3)
 
 HP (1)
 
 Synology (1)
 
Intended Use
 
 Desktop (21)
 
 Notebook (12)
 
 NAS (29)
 
 Surveillance (22)
 
 Server (13)
 
Interface
 
 SATA3 (91)
 
 SAS-2 (6)
 
Capacity
 
 500 GB (6)
 
 1 TB (16)
 
 2 TB (13)
 
 4 TB (10)
 
 3 TB (8)
 
 5 TB (1)
 
 6 TB (8)
 
 8TB (8)
 
 10TB (7)
 
 12TB (10)
 
 14TB (5)
 
Rotational Speed
 
 5400 RPM (28)
 
 7200 RPM (58)
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Internal Hard Drives   
                       
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price R 6,469.95 R 5,499.00 R 2,399.95 R 1,099.95 R 2,309.95 R 9,309.95 R 3,779.95 R 10,039.95 R 9,269.95 R 5,399.95 R 5,109.94 R 7,709.95
model WD Red NAS 10TB / WD101EFBX WD Red NAS 8TB / WD80EFBX WD Red NAS 3TB / WD30EFZX WD Blue 3.5" 2TB / WD20EZAZ WD Blue 3.5" 4TB / WD40EZAZ WD Purple 14TB / WD140PURZ WD Purple 6TB / WD62PURZ Ultrastar DC HC550 / WUH721818ALE6L4 Ultrastar DC HC550 / WUH721816ALE6L4 HC330 / WUS721010ALE6L4 WD Red Plus 8TB / WD80EFZZ WD Red Plus 12TB / WD120EFBX
name WD Red Plus 10TB NAS Hard Drive (WD101EFBX) WD Red 8TB NAS Hard Drive (WD80EFBX) WD Red 3TB NAS Hard Drive (WD30EFZX) WD Blue 3.5" 2TB Desktop Hard Drive (WD20EZAZ) WD Blue 3.5" 4TB Desktop Hard Drive (WD40EZAZ) WD Purple 14TB 3.5" Surveillance Hard Drive (WD140PURZ) WD Purple 6TB 3.5" Surveillance Hard Drive (WD62PURZ) Ultrastar DC HC550 SATA 18TB Server Hard Drive (WUH721818ALE6L4) Ultrastar DC HC550 SATA 16TB Server Hard Drive (WUH721816ALE6L4) Ultrastar DC HC330 3.5" 10TB Enterprise Datacenter Hard Drive (WUS721010ALE6L4) Red Plus 8TB NAS Hard Drive (WD80EFZZ) Red Plus 12TB NAS Hard Drive (WD120EFBX)
details * SATA3, 3.5" form factor * 7200rpm * 256MB Cache * for NAS systems with 1 to 8 drive bays * 215MB/s Internal Transfer Rate * NASWare 3.0 Technology * 3D Active Balance Plus * SATA3, 3.5" form factor * 7200rpm * 256MB Cache * for NAS systems with 1 to 8 drive bays * 210MB/s Internal Transfer Rate * NASWare 3.0 Technology * 3D Active Balance Plus * SATA3, 3.5" form factor * 5400rpm * 128MB Cache * for NAS systems with 1 to 8 drive bays * 175MB/s Internal Transfer Rate * NASWare 3.0 Technology * 3D Active Balance Plus * SATA3 * 5400rpm * 256MB Cache * 180MB/s Host to/from (Sustained) * For Desktop * SATA3 * 5400rpm * 256MB Cache * 180MB/s Host to/from (Sustained) * For Desktop * SATA3 * 7200rpm * Up to 64 Cameras Supported * 512 MB Cache * 255MB/s Host to/from (Sustained) * AllFrame * HD Video Optimised * SATA3 * 5640rpm * Up to 64 Cameras Supported * 128 MB Cache * 185MB/s Host to/from (Sustained) * AllFrame * HD Video Optimised * SATA 6Gb/s * 7200 RPM * 512MB Cache Buffer * Transfer Rate: 600MB/s * Sustained Transfer Rate: 269 MB/s * Workload: 550 TB/year * MTBF : 2.5M hours * SATA 6Gb/s * 7200 RPM * 512MB Cache Buffer * Transfer Rate: 600MB/s * Sustained Transfer Rate: 262 MB/s * Workload: 550 TB/year * MTBF : 2.5M hours * SATA 6Gb/s * 7200 RPM * 256MB Cache * Transfer Rate up to 250MB/s * 3.5" Form Factor * SATA III 6 Gb/s Interface * 5400RPM * 128MB Cache * Up to 185 MB/s Sustained Transfer Rate * CMR Recording Technology, Native command queuing, Advanced Format (AF), RoHS compliant * 1 Million Hours MTBF * Built and tested for up to 8-bay NAS systems * Supports up to 180 TB/yr workload rate * Small or medium business NAS systems in a 24x7 environment * 3.5" Form Factor * SATA III 6 Gb/s Interface * 7200RPM * 256MB Cache * Up to 196 MB/s Sustained Transfer Rate * CMR Recording Technology, Native command queuing, Advanced Format (AF), RoHS compliant * 1 Million Hours MTBF * Built and tested for up to 8-bay NAS systems * Supports up to 180 TB/yr workload rate * Small or medium business NAS systems in a 24x7 environment
warranty 3 years 3 years 3 years 2 years 2 years 3 years 3 years 5 years 5 years 5 years 3 years 3 years
General
Model
WD Red NAS 10TB
WD Red NAS 8TB
WD Red NAS 3TB
WD Blue 3.5" 2TB
WD Blue 3.5" 4TB
WD Purple 14TB
WD Purple 6TB
Ultrastar DC HC550
Ultrastar DC HC550
HC330
WD Red Plus 8TB
WD Red Plus 12TB
Product Line
WD Red Plus
WD Red NAS
WD Red NAS
WD Blue 3.5"
WD Blue 3.5"
WD Purple
WD Purple
Ultrastar DC HC500 Series
Ultrastar DC HC500 Series
Ultrastar DC HC300 Series
WD Red Plus
WD Red Plus
Drive Type
NAS
NAS
NAS
Desktop
Desktop
Surveillance
Surveillance
Server
Server
Desktop
NAS
NAS
SSHD <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified>
Form Factor
3.5 inch
3.5 inch
3.5 inch
3.5 inch
3.5 inch
3.5 inch
3.5 inch
3.5 inch
3.5 inch
3.5 inch
3.5 inch
3.5 inch
Capacity
10 TB
8 TB
3 TB
2 TB
4 TB
14 TB
6 TB
18 TB
16 TB
10 TB
8 TB
12 TB
Interface
SATA3
SATA3
SATA3
SATA3
SATA3
SATA3
SATA3
SATA3
SATA3
SATA3
SATA3
SATA3
Drive Format <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified>
512e
512e
512e
 <not specified> <not specified>
Self Encrypting Drive (SED) <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified>
Certification <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified>
Performance
Rotational Speed
7200 rpm
7200 rpm
5400 rpm
5400 rpm
5400 rpm
7200 rpm
5640 rpm
7200 rpm
7200 rpm
7200 rpm
5400 rpm
7200 rpm
Cache Size
256 MB
256 MB
128 MB
256 MB
256 MB
512 MB
128 MB
512 MB
512 MB
256 MB
128 MB
256 MB
Average Latency <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified>
4.16 msec
4.16 msec
4.16 msec
 <not specified> <not specified>
Data Rate
215 MB/s
210 MB/s
175 MB/s
180 MB/s
180 MB/s
255 MB/s
185 MB/s
600 MB/s
600 MB/s
250 MB/s
185 MB/s
196 MB/s
Random read seek time <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified>
Random write seek time <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified>
Thickness <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified>
26 mm
26 mm
26.1 mm
26.1 mm
26.1 mm
Optional Accessories
Rescue Plan <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified> <not specified>