In most unixes, you can do it at the OS level.
> From: [email protected]
> To: [email protected]
> Date: Wed, 28 Apr 2010 12:27:34 -0500
> Subject: Re: [U2] Universe and stripped drives
>
> interesting idea. Wonder if our RAID controller can do a 3 way mirror?
> I'll have to check into that. Guess I could always add a second drive
> array for the third mirror later on (the drives are cheaper, not cheap
> enough yet - we are using SAS drives for the data drives, and SATA for
> the system drives - diffenent controllers).
>
> > -----Original Message-----
> > From: [email protected] [mailto:u2-users-
> > [email protected]] On Behalf Of Dave Laansma
> > Sent: Wednesday, April 28, 2010 1:16 PM
> > To: U2 Users List
> > Subject: Re: [U2] Universe and stripped drives
> >
> > My opinion is to stripe all your data over as many drives as possible.
> >
> > Regarding mirroring, I would suggest a third mirror.
> >
> > The third mirror can be broken anytime during the day and used for
> > backup, then 're-sync'd.'
> >
> > This configuration provides for minimum data loss due to (the number
> > one
> > cause of data loss) disk failure.
> >
> > Drives are cheap. Mirror up!
> >
> > Sincerely,
> > David Laansma
> > IT Manager
> > Hubbard Supply Co.
> > Direct: 810-342-7143
> > Office: 810-234-8681
> > Fax: 810-234-6142
> > www.hubbardsupply.com
> > "Delivering Products, Services and Innovative Solutions"
> >
> >
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]] On Behalf Of George
> > Gallen
> > Sent: Wednesday, April 28, 2010 12:47 PM
> > To: U2 Users List
> > Subject: [U2] Universe and stripped drives
> >
> > We are in the process of upgrading our system.
> >
> > When we setup our current system, it was suggested we strip our data
> > drives (5) into one,
> > instead of having 5 separate drives, so it could pull more data at
> > once.
> >
> > The new system will have 6 drives available for striping
> >
> > We were going to have 6 drives striped into one, which would be
> > partitioned into our data areas
> > the thought being it would be faster disk access if it's pulling from
> > all 6 drives at once.
> > BUT...all of the partitions are on that one striped drive.
> >
> > Would it be better to have (2) sets of 3 drives striped into one, and
> > setup the two most used
> > accounts on each of those drives, so now it's only pulling data from 3
> > drives, but there could
> > be less competition between the two accounts, since they are pulling
> > from separate drives?
> >
> > Anyone played with this at all?
> >
> > FYI, each drive is mirrored as well, so if there is a drive failure,
> > data loss is protected,
> > if there was a drive failure on both the main and mirror (same drive)
> > then with the
> > 6 drive strip, we stand to potentially lose more data, than if there
> > were 2 sets of 3 striped.
> > But...since we have full daily backups, and potentially, considering a
> > second backup during
> > the day, the amount of data loss would be minimal....so I'm putting
> > that
> > off the table for
> > now in determining whether to go with a 3 or 6 stripe.
> >
> >
> > George Gallen
> > Senior Programmer/Analyst
> > Accounting/Data Division, EDI Administrator
> > [email protected]
> > ph:856.848.9005 Ext 220
> > The Wyanoke Group
> > http://www.wyanokegroup.com
> >
> >
> >
> > _______________________________________________
> > U2-Users mailing list
> > [email protected]
> > http://listserver.u2ug.org/mailman/listinfo/u2-users
> > _______________________________________________
> > U2-Users mailing list
> > [email protected]
> > http://listserver.u2ug.org/mailman/listinfo/u2-users
> _______________________________________________
> U2-Users mailing list
> [email protected]
> http://listserver.u2ug.org/mailman/listinfo/u2-users
_________________________________________________________________
The New Busy is not the too busy. Combine all your e-mail accounts with Hotmail.
http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4
_______________________________________________
U2-Users mailing list
[email protected]
http://listserver.u2ug.org/mailman/listinfo/u2-users
