SOLVED: What is the Difference between a Desktop Drive and an Enterprise Disk – Up & Running Technologies, Tech How To's

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This is taken directly from a formerly confidential Seagate PowerPoint.

Attribute		Desktop Barracuda	Nearline Lite Constellation CS	Nearline Constellation ES
Capacity & Max Z-Height		1TB: 20.2mm 2 & 3TB: 26.1mm	1TB: 20.2mm 2 & 3TB: 26.1mm	500GB, 1TB, 2TB, 3TB All 26.1mm max Z-Height
Firmware		Desktop	Nearline	Typical Nearline
FW Download		Bench-top only; no rack	In-situ downloadable	In-situ downloadable
Security		N/A	Instant Secure Erase standard	Full SED available, FIPS available
RPM		7,200
Interface, Sector Size		6Gbit/s SATA, 512 Emulated (4k on media / 512e at interface)		6Gb/s SATA, 512 Native6 Gb/s SAS, 5xx Native
Performance	Data Rate	OD Sustained: 150 – 180MB/s		OD: 150 MB/s & 155 MB/s
	4k Random Write, WCE	Risk >50% performance loss if not aligned Aligned: 144 IOPS (Q1), 160 IOPS (Q16) Unaligned: 71 IOPS (Q1), 73 IOPS (Q16)		No potential alignment risk ES.1: 180 IOPS (Q1 & Q16) ES.2: 187 IOPS (Q1 & Q16)
	NL RV(at 20-1500Hz)	~60% throughput at 12.5rad/sec2	>80% throughput at 12.5rad/sec2	>80% throughput at 12.5rad/sec2
	CommandCompletion Time	Will have issues in CCT- sensitive systems	Tuned for Nearline application	Tuned for Nearline application
Power, Idle & Read		3.4 – 5.4 Watts Idle & 5.9 – 8.0 Watts Op Read		4.6-7.7 W Idle & 7.4 – 10.7 W Rd
Reliability Spec.		750k Hr MTBF@ 2400 POH	800k Hr MTBF @ 8760 POH	1.2M hr MTBF @ 8760 POH
Warranty		2 year	3 year	5 year
Seagate Support		Desktop level available	Field Support Available	Field Support Available

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Tags: desktop vs enterprise disk

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