Veritas recommends using up to 4 tape drives per HBA to avoid reducing
performance
David
-----Mensagem original-----
De: veritas-bu-admin < at > mailman.eng.auburn.edu
[mailto:veritas-bu-admin < at > mailman.eng.auburn.edu]Em nome de David Rock
Enviada em: terca-feira, 4 de janeiro de 2005 15:19
Para: veritas-bu < at > mailman.eng.auburn.edu
Assunto: Re: [Veritas-bu] Sizing of media by number of tape drives
* ida3248b < at > post.cybercity.dk <ida3248b < at > post.cybercity.dk> [2005-01-04
18:00]:
Hello All
I have tried to find a guide lines for sizing Solaris and AIX media
servers
by the number of attached tape drives.
I have gotten a internal work document from Veritas but it dosn't contain
the
enterprise tape drives we are using (STK9840 and STK99940).
We have 8 STK9940B drives that I want to get streaming.
We have 2 AIX 5.2 Media servers and 1 Solaris Master/media server that
shares
these 8 tapes drives, but I would each media server to be able to stream
all
8 drives.
Does somebody on list have a set of guide lines ?
or suggestions/ideas ?
We are using Sun v440's with 9940B drives and have found that they will
optimally run just under 4 drives concurrently at about 50Meg/sec. They
will run more, but at reduced speed.
--
David Rock
david < at > graniteweb.com
