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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 7,509.95	R 7,919.95	R 5,289.95	R 11,149.95	R 5,399.95	R 6,239.95	R 7,449.95	R 6,729.95	R 9,099.95	R 4,329.95	R 4,919.95	R 5,069.95
model	Exos X18 18TB SAS / ST18000NM004J	IronWolf Pro 12TB / ST12000NE0008	IronWolf 8TB / ST8000VN004	Skyhawk AI 18TB / ST18000VE002	HC330 / WUS721010ALE6L4	HAT5300-8TB / SYN-HAT5300-8TB	Skyhawk AI 10TB / ST10000VE001	Exos X18 10TB SATA SED / ST10000NM020G	Exos X20 20TB / ST20000NM007D	Exos 7E10 4TB / ST4000NM000B	Exos 7E10 6TB / ST6000NM019B	Exos 7E10 8TB / ST8000NM019B
name	Exos X18 18TB 3.5" SAS Enterprise Internal Hard Drive (ST18000NM004J)	IronWolf Pro 12TB NAS Hard Drive (ST12000NE0008)	IronWolf 8TB NAS Hard Drive (ST8000VN004)	Skyhawk AI 18TB 3.5" Desktop Surveillance Hard Drive (ST18000VE002)	Ultrastar DC HC330 3.5" 10TB Enterprise Datacenter Hard Drive (WUS721010ALE6L4)	HAT5300 Series 8TB Enterprise Internal Hard Drive (HAT5300-8TB)	Skyhawk AI 10TB 3.5" Desktop Surveillance Hard Drive (ST10000VE001)	Exos X18 10TB 3.5" SATA SED Enterprise Internal Hard Drive (ST10000NM020G)	Exos X20 20TB 3.5" SATA Enterprise Internal Hard Drive (ST20000NM007D)	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)
details	* 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	* Designed for multi-bay NAS systems with Power balance + AcuTrac Technology * Up to 24-bay * Sata 6Gb/s * 7200rpm * 256mb Cache * 1.2 M Mean Time Between Failures (MTBF) (hours)	* 1-8 Bays Supported * SATA 6GB/s Interface * 7200RPM * 256MB Cache * Max. Sustained Transfer Rate OD (MB/s): 210MB/s * 180TB/year * MTBF, hours = 1,000,000 * Rotational Vibration (RV) Sensor * Dual-Plane Balance * Error Recovery Control	* ImagePerfect AI firmware * Custom designed to support an additional 32 AI streams * Designed and built to handle heavy surveillance workloads * Advanced vibration management * SkyHawk Health Management * Improved reliability * Unparalleled data protection * 256MB Cache	* SATA 6Gb/s * 7200 RPM * 256MB Cache * Transfer Rate up to 250MB/s	* Interface: SATA 6 Gb/s * Up to 274 MB/s sustained data transfer * 7200RPM * Mean Time to Failure (MTTF): 2 million hours * Up to 23% faster sequential read in Synology NAS * Purpose-built for Synology servers running 24/7 * Automatic firmware updates with DSM	* 3.5" Form Factor * SATA III 6 Gb/s Interface * 7200RPM * 256MB Cache Buffer * Sustained data transfer rate OD (MiB/s max): 234 (245MB/s max) * 2 Million Hours MTBF * 300,000 Load/Unload Cycles * Designed for 24/7 Surveillance	* 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)	* 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
warranty	5 years	5 years	3 years	5 years	5 years	5 years	3 years	5 years	5 years	5 years	5 years	5 years
General
Model	Exos X18 18TB SAS	IronWolf Pro 12TB	IronWolf 8TB	Skyhawk AI 18TB	HC330	HAT5300-8TB	Skyhawk AI 10TB	Exos X18 10TB SATA SED	Exos X20 20TB	Exos 7E10 4TB	Exos 7E10 6TB	Exos 7E10 8TB
Product Line	Exos X18	IronWolf Pro	IronWolf	Skyhawk AI	Ultrastar DC HC300 Series	HAT5300 Series	Skyhawk AI	Exos X18	Exos X20	Exos 7E10	Exos 7E10	Exos 7E10
Drive Type	Server	NAS	NAS	Surveillance	Desktop	NAS	Surveillance	Desktop	Desktop	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	3.5 inch	3.5 inch
Capacity	18 TB	12 TB	8 TB	18 TB	10 TB	8 TB	10 TB	10 TB	20 TB	4 TB	6 TB	8 TB
Interface	SAS	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3
Drive Format	512e 4Kn	<not specified>	<not specified>	<not specified>	512e	512e	512e	4Kn 512e	512e 4Kn	512n	512n	512n
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	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB
Average Latency	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	4.16 msec
Data Rate	270 MB/s	250 MB/s	210 MB/s	235 MB/s	250 MB/s	<not specified>	245 MB/s	270 MB/s	285 MB/s	215 MB/s	215 MB/s	215 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	26.1 mm	26.1 mm	<not specified>	26.1 mm	26.1 mm	<not specified>	26.1 mm	26.1 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>