Compare Internal Hard Drives

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Internal Hard Drives





product page	view details	view details	view details	view details	view details	view details	view details	view details	view details	view details	view details	view details
price	R 8,279.95	R 9,409.96	R 10,389.95	R 7,999.95	R 9,399.95	R 8,929.95	R 9,309.95	R 10,039.95	R 9,269.95	R 8,319.95	R 9,099.95	R 8,449.95
model	IronWolf Pro 12TB / ST12000NE0007	IronWolf Pro 14TB / ST14000NE0008	Ultrastar DC HC530 SATA / WUH721414ALE6L4	IronWolf 12TB / ST12000VN0008	WD Red Pro NAS 12TB / WD121KFBX	IronWolf Pro 16TB / ST16000NE000	WD Purple 14TB / WD140PURZ	Ultrastar DC HC550 / WUH721818ALE6L4	Ultrastar DC HC550 / WUH721816ALE6L4	Exos X18 18TB SATA / ST18000NM000J	Exos X20 20TB / ST20000NM007D	Exos X18 12TB SAS / ST12000NM004J
name	IronWolf Pro 12TB NAS Hard Drive (ST12000NE0007)	IronWolf Pro 14TB NAS Hard Drive (ST14000NE0008)	Ultrastar DC HC530 SATA 14TB Server Hard Drive (WUH721414ALE6L4)	IronWolf 12TB NAS Hard Drive (ST12000VN0008)	WD Red Pro NAS 12TB 3.5" Hard Drive (WD121KFBX)	IronWolf Pro 16TB NAS Hard Drive (ST16000NE000)	WD Purple 14TB 3.5" Surveillance Hard Drive (WD140PURZ)	Ultrastar DC HC550 SATA 18TB Server Hard Drive (WUH721818ALE6L4)	Ultrastar DC HC550 SATA 16TB Server Hard Drive (WUH721816ALE6L4)	Exos X18 18TB 3.5" SATA Enterprise Internal Hard Drive (ST18000NM000J)	Exos X20 20TB 3.5" SATA Enterprise Internal Hard Drive (ST20000NM007D)	Exos X18 12TB 3.5" SAS Enterprise Internal Hard Drive (ST12000NM004J)
details	* Designed for multi-bay NAS systems with Power balance + AcuTrac Technology * 1 to 16 bays * Sata 6Gb/s * 7200rpm * 256mb Cache * 1.2 M Mean Time Between Failures (MTBF) (hours)	* Designed for multi-bay NAS systems with Power balance + AcuTrac Technology * 1 to 16 bays * Sata 6Gb/s * 7200rpm * 256mb Cache * 1.2 M Mean Time Between Failures (MTBF) (hours)	* 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	* SATA3 * 3.5" form factor * 7200rpm * 256MB Cache	* SATA3, 3.5" form factor * 7200rpm * 256MB Cache * for NAS systems with up to 24-bays * 240MB/s Internal Transfer Rate * NASWare 3.0 Technology * multi-axis shock protection	* Designed for multi-bay NAS systems with Power balance + AcuTrac Technology * SATA III 6 Gb/s Interface * Up to 24-bay * Sata 6Gb/s * 7200rpm * 256mb Cache * 1.2 M Mean Time Between Failures (MTBF) (hours)	* SATA3 * 7200rpm * Up to 64 Cameras Supported * 512 MB Cache * 255MB/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 6 Gb/s * 7200 RPM * 512e/4Kn Sector Size (Bytes per Sector) * Cache, Multi-segmented (MB): 256 MB * Max. Sustained Transfer Rate OD (MB/s, MiB/s): 270/258 * Single Interface Ports * MTBF: 2,500,000 * Power-On Hours per Year (24×7): 8,760	* SATA 6 Gb/s * FastFormat (512e/4Kn) * 7200RPM * 256MB Cache * Max. Sustained Transfer Rate: 285 MB/s * (MTBF, hours): 2,500,000 * Helium Sealed-Drive Design * Conventional Magnetic Recording (CMR) * SuperParity, Low Halogen * PowerChoice Idle Power Technology, PowerBalance Power/Performance Technology * Hot-Plug Support * Organic Solderability Preservative * RSA 3072 Firmware Verification (SD&D)	* 12 Gb/s SAS * 7200 RPM * 512e/4Kn Sector Size (Bytes per Sector) * Cache, Multi-segmented (MB): 256 MB * Max. Sustained Transfer Rate OD (MB/s, MiB/s): 270/258 * Dual Interface Ports * MTBF: 2,500,000 * Power-On Hours per Year (24×7): 8,760
warranty	5 years	5 years	5 years	3 years	5 years	5 years	3 years	5 years	5 years	5 years	5 years	5 years
General
Model	IronWolf Pro 12TB	IronWolf Pro 14TB	Ultrastar DC HC530 SATA	IronWolf 12TB	WD Red Pro NAS 12TB	IronWolf Pro 16TB	WD Purple 14TB	Ultrastar DC HC550	Ultrastar DC HC550	Exos X18 18TB SATA	Exos X20 20TB	Exos X18 12TB SAS
Product Line	IronWolf Pro	IronWolf Pro	Ultrastar DC HC500 Series	IronWolf	WD Red Pro NAS	IronWolf Pro	WD Purple	Ultrastar DC HC500 Series	Ultrastar DC HC500 Series	Exos X18	Exos X20	Exos X18
Drive Type	NAS	NAS	Server	NAS	NAS	NAS	Surveillance	Server	Server	Desktop	Desktop	Server
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	12 TB	14 TB	14 TB	12 TB	12 TB	16 TB	14 TB	18 TB	16 TB	18 TB	20 TB	12 TB
Interface	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SAS
Drive Format	<not specified>	<not specified>	512e 4Kn	<not specified>	<not specified>	<not specified>	<not specified>	512e	512e	4Kn 512e	512e 4Kn	512e 4Kn
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	7200 rpm	7200 rpm	7200 rpm	7200 rpm	7200 rpm	7200 rpm	7200 rpm	7200 rpm	7200 rpm	7200 rpm
Cache Size	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB	512 MB	512 MB	512 MB	256 MB	256 MB	256 MB
Average Latency	4.16 msec	4.16 msec	4.16 msec	<not specified>	<not specified>	4.16 msec	<not specified>	4.16 msec	4.16 msec	4.16 msec	4.16 msec	4.16 msec
Data Rate	250 MB/s	250 MB/s	600 MB/s	210 MB/s	240 MB/s	250 MB/s	255 MB/s	600 MB/s	600 MB/s	270 MB/s	285 MB/s	270 MB/s
Random read seek time	<not specified>	<not specified>	7.5 msec	<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>	26 mm	<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>