I like Frank's point #4, create linear logical volumes. Consider why you're striping in the first place. Also remember that the storage subsystem be striping its physical platters. Is it? Letting the storage subsystem do it's thing is usually good advice. As Frank mentioned, you could get PAV. But also, you very well might already be getting your stripes.
I generally go linear, mostly because of the administrative flexibility I get from NOT striping. (When I extend, I don't have to match the striping.) There are still plenty of tuning opportunities. And by all means, measure it. -- R; <>< Rick Troth Velocity Software http://www.velocitysoftware.com/ On Tue, Mar 22, 2011 at 06:17, Samir Reddahi <[email protected]>wrote: > I created a volume group with 144 MOD-9 disks. Usually when I create > logical volumes, I create them with stripes equalling the number of volumes > in the volume group. > > But apparently you can only define a maximum of 128 stripes on a logical > volume. > What do I do best in this situation? > Is it OK to use the maximum 128 for a 144 disk volume group? Could it cause > a problem, for example fragmentation? > Or do I use a divisor of 144, e.g. 72? > > > Best regards, > *Samir Reddahi* > > System Engineer | Systeem MF, AS400, DBA Operations > T +32 9 235 61 09 | M +32 478 80 68 30* > **[email protected]* <[email protected]> > > [image: Securex Logo]*www.securex.be* <http://www.securex.be/> > [image: Footer] > > > > - Confidentiality Notice - > > > This communication and the information it contains is intended (a) for the > person(s) or organization(s) > > named above and for no other person or organization, and (b) may be > confidential, legally privileged and > > protected by law. Unauthorized use, copying or disclosure of any of it may be > unlawful! If you receive > > this communication in error, please notify us immediately, destroy any copies > and delete it from your > computer system. Please consult our disclaimer on our site www.securex.eu > Thank you. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
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