I ran into this issue on my Dell 1850s also. You'll need to go into BIOS, change the PERC controller mode from RAID to SCSI and reboot. Then when the system comes back up it will give a warning about switching RAID controller modes and data loss (Have Backups)!. Then if you boot from DVD/Jumpstart you should see 2 disks and just do a ZFS 2 disk mirror for rpool.
Hope this helps... - Robert Loper ---------- Forwarded message ---------- From: Andrei Ghimus <ghi...@gmail.com> To: zfs-discuss@opensolaris.org Date: Mon, 30 Aug 2010 11:05:27 PDT Subject: Re: [zfs-discuss] Terrible ZFS performance on a Dell 1850 w/ PERC 4e/Si (Sol10U6) I have the same problem you do, ZFS performance under Solaris 10 u8 is horrible. When you say passthrough mode, do you mean non-RAID configuration? And if so, could you tell me how you configured it? The best I can manage is to configure each physical drive as a RAID 0 array then export that as a logical drive. All tips/suggestions are appreciated.
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