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Internal Hard Drives   
         
product page view details view details view details view details view details
price R 10,499.01 R 10,899.00 R 10,699.00 R 11,899.00 R 14,199.00
model Ultrastar DC HC530 SATA / WUH721414ALE6L4 Ultrastar DC HC550 / WUH721818ALE6L4 WD Gold Enterprise Class 18TB / WD181KRYZ WD Gold Enterprise Class 20TB / WD202KRYZ WD Gold Enterprise Class 22TB / WD221KRYZ
name Ultrastar DC HC530 SATA 14TB Server Hard Drive (WUH721414ALE6L4) Ultrastar DC HC550 SATA 18TB Server Hard Drive (WUH721818ALE6L4) WD Gold Enterprise Class 18TB 3.5" Hard Drive (WD181KRYZ) WD Gold Enterprise Class 20TB 3.5" Hard Drive (WD202KRYZ) WD Gold Enterprise Class 22TB 3.5" Hard Drive (WD221KRYZ)
details * 3.5-inch form factor * SATA 6 Gb/s * 7200RPM * 256MB data buffer, 512e format * Interface Transfer Rate: 600MB/s * Sustained transfer rate: 255 / 267 (MB/s, typical) * 2.5M hours MTBF rating and a 5-year limited warranty * 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 * 7200rpm * 256MB Cache * Max Data Transfer Rate: 269MB/s * Engineered for heavy application workloads and designed to handle workloads up to 550TB per year. * Specifically designed for use in enterprise-grade storage systems and data centers * ArmorCache feature * up to 2.5M hours MTBF * HelioSeal technology delivers high capacities with low power draw (12TB & up) * OptiNAND technology in 20TB and 22TB * Compatible with Windows, Windows Server, and Linux * SATA * 7200rpm * 256MB Cache * Max Data Transfer Rate: 291MB/s * Engineered for heavy application workloads and designed to handle workloads up to 550TB per year. * Specifically designed for use in enterprise-grade storage systems and data centers * ArmorCache feature * up to 2.5M hours MTBF * HelioSeal technology delivers high capacities with low power draw (12TB & up) * OptiNAND technology in 20TB and 22TB * Compatible with Windows, Windows Server, and Linux * SATA * 7200rpm * 256MB Cache * Max Data Transfer Rate: 291MB/s * Engineered for heavy application workloads and designed to handle workloads up to 550TB per year. * Specifically designed for use in enterprise-grade storage systems and data centers * ArmorCache feature * up to 2.5M hours MTBF * HelioSeal technology delivers high capacities with low power draw (12TB & up) * OptiNAND technology in 20TB and 22TB * Compatible with Windows, Windows Server, and Linux
warranty 5 years 5 years 5 years 5 years 5 years
General
Model
Ultrastar DC HC530 SATA
Ultrastar DC HC550
WD Gold Enterprise Class 18TB
WD Gold Enterprise Class 20TB
WD Gold Enterprise Class 22TB
Product Line
Ultrastar DC HC500 Series
Ultrastar DC HC500 Series
WD Gold Enterprise Class
WD Gold Enterprise Class
WD Gold Enterprise Class
Drive Type
Server
Server
Desktop
Desktop
Desktop
SSHD <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
Capacity
14 TB
18 TB
18 TB
20 TB
22 TB
Interface
SATA3
SATA3
SATA3
SATA3
SATA3
Drive Format
512e
4Kn
512e
512e
512e
512e
Self Encrypting Drive (SED) <not specified> <not specified> <not specified> <not specified> <not specified>
Certification <not specified> <not specified> <not specified> <not specified> <not specified>
Performance
Rotational Speed
7200 rpm
7200 rpm
7200 rpm
7200 rpm
7200 rpm
Cache Size
256 MB
512 MB
256 MB
256 MB
256 MB
Average Latency
4.16 msec
4.16 msec
 <not specified> <not specified> <not specified>
Data Rate
600 MB/s
600 MB/s
269 MB/s
291 MB/s
291 MB/s
Random read seek time
7.5 msec
 <not specified> <not specified> <not specified> <not specified>
Random write seek time <not specified> <not specified> <not specified> <not specified> <not specified>
Thickness
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>