>>>>> "RJ" == Richard Jones <[EMAIL PROTECTED]> writes:
RJ> Hi, i'm on the verge of buying a "MegaRAID SCSI 320-2" raid controller. RJ> I need it to build a db server using 4x ultra320 scsi disks RJ> i'm thinking raid 1+0 but will try with raid5 too and compare No specific tips on that particular RAID, but in general it seems that you want to *disable* the read-ahead and enable the write-back cache. This is from reading on the linux megaraid developers list. Also, for 4 disks, go with RAID 1+0 for your best performance. I found it faster. However, with my 14 disk system, RAID5 is fastest. -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Vivek Khera, Ph.D. Khera Communications, Inc. Internet: [EMAIL PROTECTED] Rockville, MD +1-240-453-8497 AIM: vivekkhera Y!: vivek_khera http://www.khera.org/~vivek/ ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
