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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 2,859.95	R 2,029.95	R 3,030.00	R 5,399.00	R 7,649.95	R 7,509.95	R 4,329.95	R 4,919.95	R 5,069.95	R 6,189.96	R 7,019.95	R 8,449.95
model	Exos 7E8 2TB / ST2000NM004A	Ultrastar DC HA210 SATA / HUS722T1TALA604	Ultrastar DC HA210 SATA / HUS722T2TALA604	Ultrastar DC HC320 SATA / HUS728T8TALE6L4	Exos X18 16TB SAS / ST16000NM004J	Exos X18 18TB SAS / ST18000NM004J	Exos 7E10 4TB / ST4000NM000B	Exos 7E10 6TB / ST6000NM019B	Exos 7E10 8TB / ST8000NM019B	Exos 7E10 10TB / ST10000NM019B	Exos 15E900 900GB / ST900MP0006	Exos X18 12TB SAS / ST12000NM004J
name	Exos 7E8 2TB 3.5" SAS Enterprise Hard Drive (ST2000NM004A)	Ultrastar DC HA210 SATA 1TB Server Hard Drive (HUS722T1TALA604)	Ultrastar DC HA210 SATA 2TB Server Hard Drive (HUS722T2TALA604)	Ultrastar DC HC320 8TB Server Hard Drive (HUS728T8TALE6L4)	Exos X18 16TB 3.5" SAS Enterprise Internal Hard Drive (ST16000NM004J)	Exos X18 18TB 3.5" SAS Enterprise Internal Hard Drive (ST18000NM004J)	Exos 7E10 4TB 3.5" SATA Enterprise Hard Drive (ST4000NM000B)	Exos 7E10 6TB 3.5" SATA Enterprise Hard Drive (ST6000NM019B)	Exos 7E10 8TB 3.5" SATA Enterprise Hard Drive (ST8000NM019B)	Exos 7E10 10TB 3.5" SATA Enterprise Hard Drive (ST10000NM019B)	Exos 15E900 900GB 2.5" SAS Enterprise Hard Drive (ST900MP0006)	Exos X18 12TB 3.5" SAS Enterprise Internal Hard Drive (ST12000NM004J)
details	* 7200RPM * 512e SAS * 256MB Cache * Max Sustainable Transfer Rate: 226MB/s * Dual Interface Ports * MTBF: 2,000,000hr	* SATA 6Gb/s with 512-byte (512n) supportd legacy enterprise applications * 128MB cache buffer * 2M hours MTBF2 rating & 5-year limited warranty * RAID-specific time-limited error recovery * RAFF vibration compensation technology * Multi-axis shock sensor * Load/unload ramp technology	* SATA 6Gb/s with 512-byte (512n) supportd legacy enterprise applications * 7200rpm * 128MB Cache * 2M hours MTBF2 rating & 5-year limited warranty * RAID-specific time-limited error recovery * RAFF vibration compensation technology * Multi-axis shock sensor * Load/unload ramp technology	* SATA 6 Gb/s * Advanced Format 4Kn and 512e * 256MB Data buffer * 7200RPM * Transfer rate 600MB/s * 2M-hour MTBF * Workloads up to 550TB per year, and a 5-year limited warranty	* 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	* 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	* 7200RPM * 256MB Cache * Max. Sustained Transfer Rate OD: 215MB/s * Mean Time Between Failures (MTBF, hours): 2,000,000 * Power-On Hours per Year: 8,760 * SuperParity, Low Halogen * PowerChoice & PowerBalance Technology * Warranty, Limited (years): 5 years	* 7200RPM * 256MB Cache * Max. Sustained Transfer Rate OD: 215MB/s * Mean Time Between Failures (MTBF, hours): 2,000,000 * Power-On Hours per Year: 8,760 * SuperParity, Low Halogen * PowerChoice & PowerBalance Technology * Warranty, Limited (years): 5 years	* 7200RPM * 256MB Cache * Max. Sustained Transfer Rate OD: 215MB/s * Mean Time Between Failures (MTBF, hours): 2,000,000 * Power-On Hours per Year: 8,760 * SuperParity, Low Halogen * PowerChoice & PowerBalance Technology * Warranty, Limited (years): 5 years	* 7200RPM * 256MB Cache * Max. Sustained Transfer Rate OD: 215MB/s * Mean Time Between Failures (MTBF, hours): 2,000,000 * Power-On Hours per Year: 8,760 * SuperParity, Low Halogen * PowerChoice & PowerBalance Technology * Warranty, Limited (years): 5 years	* Interface: 12 Gb/s SAS * 512 Native * Sustained Transfer Rate: 210 MB/s * 256MB Cache * Advanced Write Caching, Low Halogen * PowerChoice Idle Power Technology * Hot Plug Support * Organic Solderability Preservative * Digital Sensors for Humidity	* 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	1 year	5 years	5 years	5 years	5 years	5 years	5 years	5 years	5 years	5 years
General
Model	Exos 7E8 2TB	Ultrastar DC HA210 SATA	Ultrastar DC HA210 SATA	Ultrastar DC HC320 SATA	Exos X18 16TB SAS	Exos X18 18TB SAS	Exos 7E10 4TB	Exos 7E10 6TB	Exos 7E10 8TB	Exos 7E10 10TB	Exos 15E900 900GB	Exos X18 12TB SAS
Product Line	Exos 7E8	Ultrastar DC HA200 Series	Ultrastar DC HA200 Series	Ultrastar DC HC300 Series	Exos X18	Exos X18	Exos 7E10	Exos 7E10	Exos 7E10	Exos 7E10	Exos 15E900	Exos X18
Drive Type	Server	Server NAS	Server	Server	Server	Server	Server	Server	Server	Server	Server	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	2.5 inch	3.5 inch
Capacity	2 TB	1 TB	2 TB	8 TB	16 TB	18 TB	4 TB	6 TB	8 TB	10 TB	900 GB	12 TB
Interface	SAS	SATA3	SATA3	SATA3	SAS	SAS	SATA3	SATA3	SATA3	SATA3	SAS	SAS
Drive Format	512e	<not specified>	512n	512n 4Kn	512e 4Kn	512e 4Kn	512n	512n	512n	512n	512n	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	<not specified>	7200 rpm
Cache Size	256 MB	128 MB	128 MB	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB
Average Latency	4.16 msec	4.20 msec	4.20 msec	4.16 msec	4.16 msec	4.16 msec	4.16 msec	4.16 msec	4.16 msec	4.16 msec	2.00 msec	4.16 msec
Data Rate	226 MB/s	600 MB/s	600 MB/s	600 MB/s	270 MB/s	270 MB/s	215 MB/s	215 MB/s	215 MB/s	215 MB/s	210 MB/s	270 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	26.1 mm	<not specified>	26.1 mm	26.1 mm	26.1 mm	26.1 mm	26.1 mm	26.1 mm	26.1 mm	26.1 mm	15 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>