Product comparison · 2 internal hard drives

Lenovo 250GB Hot-Swap SATAII HDD vs Lenovo 73GB SAS SFF HDD

Key differences

HDD capacity
- 250GB Hot-Swap SATAII HDD:250 GB
- 73GB SAS SFF HDD:73 GB
HDD speed
- 250GB Hot-Swap SATAII HDD:7200 RPM
- 73GB SAS SFF HDD:15000 RPM
HDD size
- 250GB Hot-Swap SATAII HDD:3.5"
- 73GB SAS SFF HDD:2.5"
Interface
- 250GB Hot-Swap SATAII HDD:Ultra320 SCSI
- 73GB SAS SFF HDD:SAS
Average seek time
- 250GB Hot-Swap SATAII HDD:9 ms
- 73GB SAS SFF HDD:2.8 ms
Average latency
- 250GB Hot-Swap SATAII HDD:4.2 ms
- 73GB SAS SFF HDD:2 ms
Operating voltage
- 250GB Hot-Swap SATAII HDD:5 / 12 V
- 73GB SAS SFF HDD:5 V
Sustained data rate
- 250GB Hot-Swap SATAII HDD:29.6 MB/s
- 73GB SAS SFF HDD:112 MB/s

Differences highlightedShow differences only

Comparison of 250GB Hot-Swap SATAII HDD, 73GB SAS SFF HDD
11 specifications	A Lenovo 250GB Hot-Swap SATAII HDD View product	B Lenovo 73GB SAS SFF HDD View product
Features6 differ
HDD capacityDiffers	250 GB	73 GB
HDD speedDiffers	7200 RPM	15000 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Ultra320 SCSI	SAS
Average seek timeDiffers	9 ms	2.8 ms
Average latencyDiffers	4.2 ms	2 ms
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	16 MB
Power1 differ
Operating voltageDiffers	5 / 12 V	5 V
Other features1 differ
Data transfer rateKnown for one	3 Gbit/s	Unknown — not stated by the source
Internal	Yes	Yes
Sustained data rateDiffers	29.6 MB/s	112 MB/s

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.