>>> On Mon, Apr 30, 2007 at 11:52 AM, in message <[EMAIL PROTECTED]>, "Ayer, Paul W" <[EMAIL PROTECTED]> wrote: > Hi Mark, > > We will be doing all LVM actually for this 120g one PV with three lv's
One Volume Group (VG) perhaps? > We have FCP but it was decided here to not use the SAN at all and just > 3390's ... so there will be a lot of this ... we are building out a new > Pilot area so we are stuck with mod3's now ... later I've told them we > Must have mod 3's .. 9's .. 27's .. and 54's . You have my condolences. Using larger volumes has performance implications, over and above SCSI over FCP's inherent speed advantage. Unless you use PAV, only one I/O can be outstanding to any particular device number at a time. Using LVM's striping capability can also help with this, but that has implications for expanding your logical volumes dynamically. All in all, things get complicated quickly. > It was stated that 3390 would be better than san for us and out of region DR > stuff ... This is probably true, as far as it goes. It shouldn't be the only factor considered in making this kind of choice. Mark Post ---------------------------------------------------------------------- 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
