RE: DLT 80gig Confuguration to speed backup
:-) I did say it was unscientific and read the manual :-)
Paul Watson
Tel: +44 1414161772
Mob: +44 7818003457
GO FURTHER with DB2
GET THERE FASTER with Informix.
Attend the IDUG 2006 European Conference.
Vienna, Austria. 2-6 October 2006
Visit http://www.iiug.org/conf for more information.
> -----Original Message-----
> From: Simmons, Keith [mailto:keith.simmons@office2office.biz]
> Sent: 22 June 2006 02:48
> To: informix-list@iiug.org; agwanzura@okzim.co.zw
> Cc: Paul Watson
> Subject: RE: DLT 80gig Confuguration to speed backup
>
> But only if you are testing using dd. I had a 7.31 engine crash
> on me when attempting to use ontape with a block size the tape
> drive couldn't handle.
> Suggest you use dd and test with block sizes of 8192, 16384
> (and possibly 32768).
> DLT's are sloooow, future proof and improve speed by upgrading
> to Ultrium (350 plus Gb in 1hr 20 mins).
>
> Keith
>
> -> -----Original Message-----
> -> From: Paul Watson [mailto:paul@oninit.com]
> -> Sent: Wednesday, June 21, 2006 7:55 PM
> -> To: informix-list@iiug.org
> -> Subject: Re: DLT 80gig Confuguration to speed backup
> ->
> ->
> -> It is very very unscientific but it has always worked for
> -> me, increase
> -> the block size until the light stops flashing (check your manual)
> ->
> -> Paul Watson
> -> Tel: +44 1414161772
> -> Mob: +44 7818003457
> ->
> -> GO FURTHER with DB2
> -> GET THERE FASTER with Informix.
> -> Attend the IDUG 2006 European Conference.
> -> Vienna, Austria. 2-6 October 2006
> -> Visit http://www.iiug.org/conf for more information.
> ->
> ->
> ->
> -> > -----Original Message-----
> -> > From: PapaKiKi [mailto:agwanzura@okzim.co.zw]
> -> > Posted At: 21 June 2006 13:02
> -> > Posted To: comp.databases.informix
> -> > Conversation: DLT 80gig Confuguration to speed backup
> -> > Subject: DLT 80gig Confuguration to speed backup
> -> >
> -> >
> -> > I am using IDS 7.31 and my databaseis 80gig, running on
> -> HP-UX 11.0 and
> -> > 8 Gig of ram.My backup is taking around 8hrs to finish and i
> -> > suspect my
> -> > tape device configuration has could be contibuting somehow
> -> .I am using
> -> > ontape and doing a level 0 backup!Below is my configuration
> -> > settings in
> -> > onconfig.live.Can someone help me with the ideal tape size and
> -> > recommendations or advice,Thanks in advance!
> -> > # System Archive Tape Device
> -> >
> -> > TAPEDEV /dev/rmt/c5t3d0BEST # Tape device path
> -> > TAPEBLK 6144 # Tape block size (Kbytes)
> -> > TAPESIZE 80000000 # Maximum amount of data to
> -> > put on tape
> -> > (Kbytes)
> -> >
> -> > # Log Archive Tape Device
> -> >
> -> > LTAPEDEV /dev/rmt/c5t4d0BEST dev/rmt/1m # Log
> -> tape device
> -> > pat
> -> > LTAPEBLK 6144 # Log tape block size (Kbytes)
> -> > LTAPESIZE 80000000 # Max amount of data to put
> -> > on log tape
> -> > (Kbytes)
> -> >
> ->
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>
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