Product comparison · 2 internal hard drives

HP RL911AV internal hard drive vs Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk

6specifications compared
4differ
2identical
13known for one product only

Key differences

The Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk has 240 GB more HDD capacity than the HP RL911AV internal hard drive (400 GB vs 160 GB). The Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk has 0.2 mm more width than the HP RL911AV internal hard drive (101.8 mm vs 101.6 mm). The Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk has 1 mm more depth than the HP RL911AV internal hard drive (147 mm vs 146 mm). Interface: Serial ATA on the HP RL911AV internal hard drive, SAS on the Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk.

HDD capacity
- RL911AV internal hard drive:160 GB
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:400 GB
Interface
- RL911AV internal hard drive:Serial ATA
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:SAS
Width
- RL911AV internal hard drive:101.6 mm
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:101.8 mm
Depth
- RL911AV internal hard drive:146 mm
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:147 mm

Side by side

Differences highlightedShow differences only

Comparison of RL911AV, Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk
19 specifications	A HP RL911AV internal hard drive Model RL911AV View product	B Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk View product
Features2 differ
HDD capacityDiffers	160 GB	400 GB
InterfaceDiffers	Serial ATA	SAS
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	16 MB
Read seek timeKnown for one	Unknown — not stated by the source	3.9 ms
Write seek timeKnown for one	Unknown — not stated by the source	4.2 ms
Track to track seek timeKnown for one	Unknown — not stated by the source	0.35 ms
Average latencyKnown for one	Unknown — not stated by the source	2.98 ms
HDD speedKnown for one	5400 RPM	Unknown — not stated by the source
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
Average seek timeKnown for one	9 ms	Unknown — not stated by the source
Weight & dimensions2 differ
WidthDiffers	101.6 mm	101.8 mm
DepthDiffers	146 mm	147 mm
Height	26.1 mm	26.1 mm
WeightKnown for one	Unknown — not stated by the source	771 g
Other featuresidentical
Data transfer rateKnown for one	Unknown — not stated by the source	3 Gbit/s
Internal	Yes	Yes
Sustained data rateKnown for one	Unknown — not stated by the source	97 MB/s
Dimensions (WxDxH)Known for one	101.6 x 146 x 26.11 mm	Unknown — not stated by the source
Poweridentical
Operating voltageKnown for one	5 / 12 V	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

More internal hard drive comparisons

All internal hard drive comparisons