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тАО11-21-2001 04:50 PM
тАО11-21-2001 04:50 PM
DDS4 problem
Hi everyone...
HPUX: 10.20
Tape: DDS4
Problem : I want to backup 40G Data, but DDS4 is backup only 20G data with tar or fbackup command.
Please help me...
HPUX: 10.20
Tape: DDS4
Problem : I want to backup 40G Data, but DDS4 is backup only 20G data with tar or fbackup command.
Please help me...
I think I am a specialist in IT Korea^^. I am a programmer and SE and DBA
3 REPLIES 3
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тАО11-21-2001 05:07 PM
тАО11-21-2001 05:07 PM
Re: DDS4 problem
Using a 150M tape will get you 20Gb Raw,
but up to 40Gb with a full compression
ratio, which is highly unlikely. A DLT
drive will serve you much better in the
way of capacity. There are various backup
tools that will ask for a second tape in
HPUX. fbackup is one of these.
-Michael
but up to 40Gb with a full compression
ratio, which is highly unlikely. A DLT
drive will serve you much better in the
way of capacity. There are various backup
tools that will ask for a second tape in
HPUX. fbackup is one of these.
-Michael
Anyone for a Mutiny ?
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тАО11-22-2001 12:02 AM
тАО11-22-2001 12:02 AM
Re: DDS4 problem
Hi there.
As Michael has mentioned, try a DLT.
Check for Quantum or StorageTek.
Perhaps you can get one for test purposes.
Rgds
Alexander M. Ermes
As Michael has mentioned, try a DLT.
Check for Quantum or StorageTek.
Perhaps you can get one for test purposes.
Rgds
Alexander M. Ermes
.. and all these memories are going to vanish like tears in the rain! final words from Rutger Hauer in "Blade Runner"
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тАО11-23-2001 06:04 AM
тАО11-23-2001 06:04 AM
Re: DDS4 problem
Hello,
A DDS4 tape holds up to 20Gb of data in raw format. It is stated that it holds 40Gb of data since it is assumed a 2:1 compression rate. In theory, it can hold a lot more data than that, since some data is compressed at a greater ratio than 2:1. It just depends on the data you want to store. If the data is already compressed, then it will hold only 20Gb of data. If data is text, then you will probably be able to store more than 40Gb.
A DLT tape, however, stores up to 40Gb raw data, and up to 80Gb if we assume a 2:1 compression rate. So it should work for your purposes.
Follow these links for more information:
http://www.products.storage.hp.com/eprise/main/storage/DisplayPages/summary.htm?DataPage=dds4-dat40
and
http://www.products.storage.hp.com/eprise/main/storage/DisplayPages/summary.htm?DataPage=dlt8000
HTH,
Vince
A DDS4 tape holds up to 20Gb of data in raw format. It is stated that it holds 40Gb of data since it is assumed a 2:1 compression rate. In theory, it can hold a lot more data than that, since some data is compressed at a greater ratio than 2:1. It just depends on the data you want to store. If the data is already compressed, then it will hold only 20Gb of data. If data is text, then you will probably be able to store more than 40Gb.
A DLT tape, however, stores up to 40Gb raw data, and up to 80Gb if we assume a 2:1 compression rate. So it should work for your purposes.
Follow these links for more information:
http://www.products.storage.hp.com/eprise/main/storage/DisplayPages/summary.htm?DataPage=dds4-dat40
and
http://www.products.storage.hp.com/eprise/main/storage/DisplayPages/summary.htm?DataPage=dlt8000
HTH,
Vince
Tape Drives RULE!!!
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