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Difference between DDS3 and DDS4

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Don Spare
Regular Advisor

Difference between DDS3 and DDS4

Aside from length, are there any other differences between DDS3 and DDS4 tapes? I have drives that came with DDS3 tapes but I am considering the longer tapes to hold more data.
Advice greatly appreciated.
4 REPLIES
Leif Halvarsson_2
Honored Contributor
Solution

Re: Difference between DDS3 and DDS4

Hi,
DDS 4 has a media capacity of 20GB uncompressed, 40GB compressed (2-1 ratio).
DDS 3 has a media capacity of 12GB uncompressed, 24GB compressed (2-1 ratio).

DDS 4 media can't be used in a DDS3 drive but a DDS 4 drive is backwards compatible with DDS3.
Don Spare
Regular Advisor

Re: Difference between DDS3 and DDS4

Thanks. That's what I needed to know.
Eugeny Brychkov
Honored Contributor

Re: Difference between DDS3 and DDS4

Vincent Farrugia
Honored Contributor

Re: Difference between DDS3 and DDS4

Hello,

DDS4 is also faster.

3Mb/s native speed (6Mb/s compressed) for the DDS4

1Mb/s native speed (2Mb/s compressed) for the DDS3.

HTH,
Vince
Tape Drives RULE!!!