oups, i changed for RAID 10(strip and mirror)....
-----Original Message----- From: James Thornton [mailto:[EMAIL PROTECTED] Sent: 2 aout, 2004 17:32 To: Stephane Tessier Cc: 'Scott Marlowe'; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [PERFORM] my boss want to migrate to ORACLE Stephane Tessier wrote: > I checked and we have a 128 megs battery backed cache on the raid > controller... >>we have space for more ram(we use 2 gigs on possibility of 3 gigs) >>iowait is very high 98% --> look like postgresql wait for io access >>raid5 -->raid0 if i'm right raid5 use 4 writes(parity,data, etc) for each >>write on disk > > Just get battery backed cache on your RAID controller. RAID0 is way too > unreliable for a production environment. One disk dies and all your > data is just gone. I'm the one who sent the e-mail about RAID 5's 4 writes, but I suggested you look at RAID 10, not RAID 0. -- James Thornton ______________________________________________________ Internet Business Consultant, http://jamesthornton.com ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
