The 1+0 on the WAL is better than on PGDATA? I guess I'm confused about the write sequence of the data. I will research more, thank you! -Kenji On Tue, Aug 08, 2006 at 04:59:09PM -0500, Thomas F. O'Connell wrote: > > On Aug 8, 2006, at 4:49 PM, Joshua D. Drake wrote: > > >>I am considering a setup such as this: > >> - At least dual cpu (possibly with 2 cores each) > >> - 4GB of RAM > >> - 2 disk RAID 1 array for root disk > >> - 4 disk RAID 1+0 array for PGDATA > >> - 2 disk RAID 1 array for pg_xlog > >>Does anyone know a vendor that might be able provide such setup? > > Wouldn't it be preferable to put WAL on a multi-disk RAID 10 if you > had the opportunity? This gives you the redundancy of RAID 1 but > approaches the performance of RAID 0, especially as you add disks to > the array. In benchmarking, I've seen consistent success with this > approach. > > -- > Thomas F. O'Connell > Sitening, LLC > > http://www.sitening.com/ > 3004B Poston Avenue > Nashville, TN 37203-1314 > 615-469-5150 x802 > 615-469-5151 (fax)
