I planned on doing this as well. There will be 3 system drives which I'm going to put some of our busy temp files.
> -----Original Message----- > From: [email protected] [mailto:u2-users- > [email protected]] On Behalf Of [email protected] > Sent: Wednesday, April 28, 2010 1:12 PM > To: U2 Users List > Subject: Re: [U2] Universe and stripped drives > > I am not a disk guy, but striping has provided significant performance > gains for. Separating the busiest files from everything else can also > help > a lot; it keeps your busiest files from dragging down the rest of the > system/account. If you're on *nix, you can do some very creative things > like isolating busy files to a subset of disks and then mounting inside > your main account(s). This way it looks to uv like the files are all in > one location, but the O/S accesses them separately from everything else > in > the account. This doesn't fully resolve performance hits due to big > complex queries on big complex files, but it can help isolate them so > the > rest of the world doesn't care. > > hth, > Brad. > > > > > From: > George Gallen <[email protected]> > To: > U2 Users List <[email protected]> > Date: > 04/28/2010 11:47 AM > Subject: > [U2] Universe and stripped drives > Sent by: > [email protected] > > > > 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 > > > > U.S. BANCORP made the following annotations > --------------------------------------------------------------------- > Electronic Privacy Notice. This e-mail, and any attachments, contains > information that is, or may be, covered by electronic communications > privacy laws, and is also confidential and proprietary in nature. If > you are not the intended recipient, please be advised that you are > legally prohibited from retaining, using, copying, distributing, or > otherwise disclosing this information in any manner. Instead, please > reply to the sender that you have received this communication in error, > and then immediately delete it. Thank you in advance for your > cooperation. > > > > --------------------------------------------------------------------- > > _______________________________________________ > 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
