Re: Speed of Magstar 3570
1999-01-14 17:11:33
Subject: |
Re: Speed of Magstar 3570 |
From: |
Jeff Connor <connorj AT NIMO DOT COM> |
Date: |
Thu, 14 Jan 1999 17:11:33 -0500 |
Sounds like the bottleneck is ADSM not the 3570. Have you gotten better
performance with different ADSM servers with another kind of drive? I've
backed up 14GB in 40mins using a 3570C in a 3575 library with an ADSM NT
server. Just curious. Thanks
John Fowler <John.Fowler AT LA-Z-BOY DOT COM> on 01/14/99 03:37:42 PM
Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
cc: (bcc: Jeffrey P Connor/IT/NMPC)
Subject: Re: Speed of Magstar 3570
According to IBM:
Drive performance:
Native sustained data rate
B: 2.2MB/sec
C: 7.0MB/sec
Compressed sustained data rate
B: 6.6MB/sec (3:1)
C: 15.0MB/sec (maximum)
SCSI burst data rate 20MB/sec
Capacity
Per cartridge 5GB up to 15GB (with 3:1 LZ1 compression)
Per 3570 library 100GB up to 300GB (with 3:1 LZ1 compression)
I have done testing here and we achieve from the ADSM server to the Magstar
3570 a aggregate tranfer rate of approx 1MB/Sec. There are better/faster
tape subsystems to buy.
Hope this helps.
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- Speed of Magstar 3570, Johan Pol
- Re: Speed of Magstar 3570, John Fowler
- Re: Speed of Magstar 3570,
Jeff Connor <=
- Re: Speed of Magstar 3570, Kelly J. Lipp
- Re: Speed of Magstar 3570, Loon, E.J. van - SPLXM
- Re: Speed of Magstar 3570, John Fowler
- Re: Speed of Magstar 3570, Leo Humar
- Re: Speed of Magstar 3570, John Fowler
- Speed of Magstar 3570, Johan Pol [mailto:JPOL
- Re: Speed of Magstar 3570, Jeff Connor
- Re: Speed of Magstar 3570, John Fowler [mailto:John.Fowler
- Re: Speed of Magstar 3570, Kelly J . Lipp [mailto:lipp
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