Really slow vos dumps to local disks

[Touretsky, Gregory]

We do AFS volume-based backup directly to ADSM tapes (ADSM 3.1.2 now).
Average rate is 4.1 MB/sec, Max rate 7.4 MB/sec (backing up volumes with
large files).
Tape limit: 10MB/sec
Network: gigabit backbone between AFS file servers and backup servers.
AFS data kept on EMC Symmetrix.

Gregory Touretsky
IDC Computing / Systems Engineering Group
Unix Server Platforms
gregory.touretsky@intel.com
> (+) 972-4-865-6377, Fax: 04-865-5999
iNET: 465-6377, M/S: IDC-1B



-----Original Message-----
From: Nathan Neulinger [mailto:nneul@umr.edu]
Sent: Friday, March 16, 2001 1:46 AM
To: Touretsky, Gregory
Cc: Info-AFS@transarc.com
Subject: Re: Really slow vos dumps to local disks


What is your local disk capable of?

-- Nathan

"Touretsky, Gregory" wrote:
> 
> We get 7-8 Mb/sec backing up AFS data with ADSM over gigabit network...
> 
> Gregory Touretsky
> IDC Computing / Systems Engineering Group
> Unix Server Platforms
> gregory.touretsky@intel.com
> > (+) 972-4-865-6377, Fax: 04-865-5999
> iNET: 465-6377, M/S: IDC-1B
> 
> -----Original Message-----
> From: Ken Hornstein [mailto:kenh@cmf.nrl.navy.mil]
> Sent: Thursday, March 15, 2001 11:04 PM
> To: Info-AFS@transarc.com
> Subject: Re: Really slow vos dumps to local disks
> 
> >The slowdown I've seen is on the server itself, as well as remote clients
-
> >in fact local/remote doesn't seem to be making much difference.
> 
> I calculate his data rate at about 3.7MB/sec, which is in-line with what
> everyone else has been seeing.
> 
> --Ke

-- 


------------------------------------------------------------
Nathan Neulinger                       EMail:  nneul@umr.edu
University of Missouri - Rolla         Phone: (573) 341-4841
CIS - Systems Programming                Fax: (573) 341-4216