If it's a T2000 it's Sol 10 and the default for shared memory is 1/4 of physical memory which I can almost guarantee no one set their's that big back in Sol 9. I would not put any of these entries in /etc/system on Sol 10, my V890 with Sol 10 runs very well without any.
Dom -----Original Message----- From: Andre Smith [mailto:[EMAIL PROTECTED] Sent: Saturday, 17 November 2007 8:58 AM To: VERITAS-BU@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] T2000 vaulting performance with VTL/LTO3 Depending on how many streams and write drives are running concurrently, check your shared memory settings in /etc/system. On Nov 16, 2007, at 1:00 PM, Chris_Millet <[EMAIL PROTECTED] > wrote: > > I'm starting to experiment with the use of T2000 for media servers. > The backup server is a T2000 8 core, 18GB system. There is a Qlogic > QLE2462 PCI-E dual port 4Gb adapter in the system that plugs into a > Qlogic 5602 switch. From there, one port is zoned to a EMC CDL 4400 > (VTL) and a few HP LTO3 tape drives. The connectivity is 4Gb from > host to switch, and from switch to the VTL. The tape drive is 2Gb. > > So when using Netbackup Vault to copy a backup done to the VTL to a > real tape drive, the backup performance tops out at about 90MB/sec. > If I spin up two jobs to two tape drives, they both go about 45MB/ > sec. It seems I've hit a 90MB/sec bottleneck somehow. I have > v240s performing better! > > Write performance to the VTL from incoming client backups over the > WAN exceeds the vault performance. > > My next step is to zone the tape drives on one of the HBA ports, and > the VTL zoned on the other port. > > I'm using: > SIZE_DATA_BUFFERS = 262144 > NUMBER_DATA_BUFFERS = 64 > > Any other suggestions? > > +-- > -------------------------------------------------------------------- > |This was sent by [EMAIL PROTECTED] via Backup Central. > |Forward SPAM to [EMAIL PROTECTED] > +-- > -------------------------------------------------------------------- > > > _______________________________________________ > Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
