This is taken directly from a formerly confidential Seagate PowerPoint.

 

difference-between-desktop-and-enterprise-disk

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 DownloadBench-top only; no rackIn-situ downloadableIn-situ downloadable
Security

N/A

Instant Secure Erase standardFull 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
PerformanceData RateOD Sustained: 150 – 180MB/sOD: 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 TimeWill have issues   in CCT- sensitive systemsTuned for   Nearline applicationTuned for Nearline application
Power, Idle &   Read3.4 – 5.4 Watts Idle &   5.9 – 8.0 Watts Op Read4.6-7.7 W Idle &   7.4 – 10.7 W Rd
Reliability Spec.750k Hr MTBF@ 2400 POH800k Hr MTBF @ 8760 POH1.2M hr   MTBF   @ 8760 POH
Warranty

2 year

3 year

5 year

Seagate   SupportDesktop level availableField Support   AvailableField Support Available

 

 

 

 

 


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