Allen,

we have disk performing up to 280MB/s over 2 FC HBA against a FAStT900. 
You know the amount of tape drives you would need to match that speed? I'd 
say about 4-5 LTO-2 tape drives.....

No problems matching disk speed against tape speed. Only a matter of 
budget :)

But I do agree with you in your basic opinion. If you've got a limited 
budget, a single LTO-2 drive is normally faster than running against 
internal SCSI-disks or S-ATA disks.

Best Regards

Daniel Sparrman
-----------------------------------
Daniel Sparrman
CIO
Exist i Stockholm AB
Propellervägen 6B
183 62 TÄBY
Växel: 08 - 754 98 00
Mobil: 070 - 399 27 51



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2004-11-08 17:19
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Subject
Re: Backup options






==> In article <OF4F01CECE.433776B6-ON85256F46.005486D5 AT papajohns DOT com>, 
William Rosette <Bill_Rosette AT PAPAJOHNS DOT COM> writes:



> It is currently running at 55.945 GB per hour going to tape (1 tape 
drive
> (collocate)), pretty good for tape drive speed.  Disk would make the 
backup
> run faster with multi-streams.  Cannot go to multi-tapes due to slow
> recovery.  Other option would be to break the backup into 2 separate 
backups
> running simultaneously, probably nightmare admistrativewise.

Say more about "slow recovery" when you do mulitple sessions to tapes?

If you've got the disk to sustain the backup, that will help, but I've not 
yet
seen a disk solution that measures up to the tape speeds.


- Allen S. Rout