Date: Thu, 17 May 2007 14:14:42 +0700 (ICT) From: Olivier Nicole <on@cs.ait.ac.th> To: thwang@mail.nhcue.edu.tw Cc: freebsd-hardware@freebsd.org Subject: Re: messages from dmesg -- (HP ProLiant DL380 G5) Message-ID: <200705170714.l4H7EgvR082226@banyan.cs.ait.ac.th> In-Reply-To: <224a745a0705170006t3a1df03cv5312bf6fc86ee426@mail.gmail.com> (biogary@gmail.com) References: <224a745a0705170006t3a1df03cv5312bf6fc86ee426@mail.gmail.com>
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Hi, > *I can setup FreeBSD 6.2R successfully and everything is OK. * > *However, I found that there is an amazing message in the dmesg:* > > *ciss0: <HP Smart Array P400> port 0x4000-0x40ff mem > 0xfde00000-0xfdefffff,0xfddf > 0000-0xfddf0fff irq 18 at device 0.0 on pci6 > ciss0: [GIANT-LOCKED]* > > *--->**Smart Array P400 is activated by ciss0 successfully* > > *da0 at ciss0 bus 0 target 0 lun 0 > da0: <COMPAQ RAID 5 VOLUME OK> Fixed Direct Access SCSI-0 device > da0: 135.168MB/s transfers > da0: 419946MB (860051248 512 byte sectors: 255H 32S/T 65535C)* Just a wild guess, but if you set-up your disks to be organised into RAID 5 (that is one big disk) it sounds logic that all you can see is one big disk. As for the speed, RAID 5 is not optimized for speed but for reliability while preserving a low ratio of parity vs. data disk. If you are interested with more speed, you may have to select another RAID agregation (this morning I found http://www.acnc.com/04_01_00.html that shows good comparison for every RAID config). Best regards, Olivier
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