Re: [PERFORM] Postgres on RAID5

2005-03-14 Thread Greg Stark
Alex Turner [EMAIL PROTECTED] writes: a 14 drive stripe will max out the PCI bus long before anything else, Hopefully anyone with a 14 drive stripe is using some combination of 64 bit PCI-X cards running at 66Mhz... the only reason for a stripe this size is to get a total accessible size

Re: [PERFORM] Postgres on RAID5

2005-03-13 Thread Greg Stark
Arshavir Grigorian [EMAIL PROTECTED] writes: Hi, I have a RAID5 array (mdadm) with 14 disks + 1 spare. This partition has an Ext3 filesystem which is used by Postgres. People are going to suggest moving to RAID1+0. I'm unconvinced that RAID5 across 14 drivers shouldn't be able to keep up