Product comparison · 2 backup storage devices

Acer DDS4 20/40GB Utra160 68pin vs Acer SCSI AIT-2 Turbo 80/208GB 5.25" internal

Key differences

Data storage type
- DDS4 20/40GB Utra160 68pin:DDS
- SCSI AIT-2 Turbo 80/208GB 5.25" internal:AIT
Compression ratio
- DDS4 20/40GB Utra160 68pin:2:1
- SCSI AIT-2 Turbo 80/208GB 5.25" internal:2.6:1
Native capacity
- DDS4 20/40GB Utra160 68pin:20 GB
- SCSI AIT-2 Turbo 80/208GB 5.25" internal:80 GB
Compressed capacity
- DDS4 20/40GB Utra160 68pin:40 GB
- SCSI AIT-2 Turbo 80/208GB 5.25" internal:208 GB
Sustained data transfer rate (native)
- DDS4 20/40GB Utra160 68pin:3 MB/s
- SCSI AIT-2 Turbo 80/208GB 5.25" internal:12 MB/s

Differences highlightedShow differences only

Comparison of DDS4 20/40GB Utra160 68pin, SCSI AIT-2 Turbo 80/208GB 5.25" internal
20 specifications	A Acer DDS4 20/40GB Utra160 68pin View product	B Acer SCSI AIT-2 Turbo 80/208GB 5.25" internal View product
Performance2 differ
Product type	Storage drive	Storage drive
Media type	Tape Cartridge	Tape Cartridge
Interface	Ultra160 SCSI	Ultra160 SCSI
Internal	Yes	Yes
Data storage typeDiffers	DDS	AIT
Compression ratioDiffers	2:1	2.6:1
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	300000 h
Read/write head lifeKnown for one	Unknown — not stated by the source	50000 h
Form factorKnown for one	5.25" Half-height	Unknown — not stated by the source
Storage2 differ
Native capacityDiffers	20 GB	80 GB
Compressed capacityDiffers	40 GB	208 GB
Drive device, buffer sizeKnown for one	Unknown — not stated by the source	32 MB
Data transmission1 differ
Burst transfer rateKnown for one	Unknown — not stated by the source	160 MB/s
Sustained data transfer rate (native)Differs	3 MB/s	12 MB/s
Sustained data transfer rate (compressed)Known for one	6 MB/s	Unknown — not stated by the source
Poweridentical
Power consumption (typical)Known for one	Unknown — not stated by the source	14 W
Weight & dimensionsidentical
Size (imperial)Known for one	Unknown — not stated by the source	13.3 cm (5.25")
WeightKnown for one	Unknown — not stated by the source	780 g
Other featuresidentical
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	102 x 155 x 41.2 mm
I/O ports	1 x 68 pin HD D-Sub (HD-68)	1 x 68 pin HD D-Sub (HD-68)

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.