https://community.hpe.com/t5/disk-enclosures/xp-performance-issue/m-p/2512155#M1579 I doubt that it is the CHIP. I have a 350GB database using 4 FC controllers, spread over 60 LUN's. Performance is very good.<BR />Plase give some more information. <BR />What Raid level are you running? <BR />What size disks and emulation? <BR />How much cache do you have? <BR />Is the database doing primarily reads or writes, or is it even? <BR />Is your database on raw disks or file system?<BR /> Mon, 02 Apr 2001 16:37:20 GMT Dave Wherry 2001-04-02T16:37:20Z https://community.hpe.com/t5/disk-enclosures/xp-performance-issue/m-p/2512154#M1578 I newly installed a XP512 with 16 disks, 4 FC interface. I configured 40 LUNs on it. When I create a 40G oracle tablespace on that, I found the total IO on XP is around 80M/s.<BR /><BR />by using sar -d , almost every lun indicate "avserv"(around 2) much smaller than "avwait" (around 6).<BR /><BR />The activity LED blinks no so fast as I wish.<BR /><BR />From what I list above, do it mean the CHIP is not capable of processing the request? Mon, 02 Apr 2001 03:55:10 GMT https://community.hpe.com/t5/disk-enclosures/xp-performance-issue/m-p/2512154#M1578 Anthony_4 2001-04-02T03:55:10Z https://community.hpe.com/t5/disk-enclosures/xp-performance-issue/m-p/2512155#M1579 I doubt that it is the CHIP. I have a 350GB database using 4 FC controllers, spread over 60 LUN's. Performance is very good.<BR />Plase give some more information. <BR />What Raid level are you running? <BR />What size disks and emulation? <BR />How much cache do you have? <BR />Is the database doing primarily reads or writes, or is it even? <BR />Is your database on raw disks or file system?<BR /> Mon, 02 Apr 2001 16:37:20 GMT https://community.hpe.com/t5/disk-enclosures/xp-performance-issue/m-p/2512155#M1579 Dave Wherry 2001-04-02T16:37:20Z