Date: Mon, 10 Dec 2007 18:54:40 +0100 From: Michael Fuckner <michael@fuckner.net> To: Lan Tran <lan@hangwithme.com> Cc: freebsd-hardware@freebsd.org Subject: Re: large disk > 8 TB Message-ID: <475D7D60.4040701@fuckner.net> In-Reply-To: <475D7866.1070803@hangwithme.com> References: <475D7866.1070803@hangwithme.com>
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Lan Tran wrote: > I have a Dell PERC 6/E controller connected to an external Dell MD1000 > storage, which I set up RAID 6 for. The RAID BIOS reports 8.5 TB. I > installed 7BETA4 amd64 and Sysinstall/dmesg.boot detects this correctly: > mfid1: <MFI Logical Disk> on mfi1 > mfid1: 8578560MB (17568890880 sectors) RAID volume 'raid6' is optimal" > > However, after I created a zfs zpool on this device it only shows 185 > GB. # zpool create tank /dev/mfid1s1d > # zpool list > NAME SIZE USED AVAIL CAP HEALTH ALTROOT > tank 185G 111K 185G 0% ONLINE - > > also with 'dh': > # df -h tank > Filesystem Size Used Avail Capacity Mounted on > tank 182G 0B 182G 0% /tank > The main purpose of ZFS is doing Software raid (which is even faster than HW Raid nowadays). You should export all disks seperately to the OS- and then you don't have the 4GB limit wrapping the size to 185GB. Regards, Michael
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