-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of scott.marlowe Sent: Tuesday, May 11, 2004 2:23 PM To: Paul Tuckfield Cc: [EMAIL PROTECTED]; Matthew Nuzum; [EMAIL PROTECTED]; Rob Fielding Subject: Re: [PERFORM] Configuring PostgreSQL to minimize impact of checkpoints
On Tue, 11 May 2004, Paul Tuckfield wrote: > If you are having a "write storm" or bursty writes that's burying > performance, a scsi raid controler with writeback cache will greatly > improve the situation, but I do believe they run around $1-2k. If > it's write specific problem, the cache matters more than the striping, > except to say that write specfic perf problems should avoid raid5 Actually, a single channel MegaRAID 320-1 (single channel ultra 320) is only $421 at http://www.siliconmechanics.com/c248/u320-scsi.php It works pretty well for me, having 6 months of a production server on one with zero hickups and very good performance. They have a dual channel intel card for only $503, but I'm not at all familiar with that card. The top of the line megaraid is the 320-4, which is only $1240, which ain't bad for a four channel RAID controller. Battery backed cache is an addon, but I think it's only about $80 or so. ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly ----------------------------- If you don't mind slumming on ebay :-) keep an eye out for PERC III cards, they are dell branded LSI cards. Perc = Power Edge Raid Controller. There are models on there dual channel u320 and dell usually sells them with battery backed cache. That's how I have acquired all my high end raid cards. Rob ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
