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Home -> Community -> Mailing Lists -> Oracle-L -> RE: How fast are your tape backups?
FYI,
We have NT4, 1Gb RAM.
Fibre Channel Disks
Tape Drive is a Dell (Quantum) DLT7000 connected via SCSI.
Using Backup Exec.
Our total backup and verify is 17.6Gb which takes 126 mins (2.4MB/sec but
includes verify).
If I consider just a 1 drive backup only (ie no verify) we backup approx 5
Gb at 541.3 MB / min = 9 MB/sec.
(This is using Hardware compression).
HTH,
Bruce Reardon
-----Original Message-----
Sent: Tuesday, 28 August 2001 11:05
Hello list. I have a brand new database that is around 200 GB in size. Our tape backup solution which was supplied by the hosting company is only giving me bewteen 6 and 7 MB per second . A full cold backup can take 8 to 10 hours at this rate.
I looked at the specs for the tape library they sold us and it says 15MB/sec or up to 30 MB/sec compressed. What gives? The storage is SCSI 3 and also some Fibre channel so I don't think the drives are the bottleneck.
What kind of numbers are other people getting?
The system
NT 4
4GB RAM
400 GB storage (mix of SCSI 3 and fibre)
Oracle 8.1.6.3.0
~ 200 GB in Oracle data files
Tivoli Storage Manager
IBM robotic tape library (via fibre)
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--
Author: Reardon, Bruce (CALBBAY)
INET: Bruce.Reardon_at_comalco.riotinto.com.au
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists --------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Mon Aug 27 2001 - 20:26:27 CDT
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