Date: Tue, 06 Apr 2004 12:57:31 -0400 From: lexar <lexar@utcorp.com> To: freebsd-scsi@freebsd.org Subject: Mylex DAC960PD experiment Message-ID: <4072E17B.1060900@utcorp.com>
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I have 6 x maxtor atlas 36gb scsi 320 drives in hotswapable drive trays in a 2 channel chassis. I picked up a Mylex DAC960PD really cheap on ebay for learning about RAID. I didn't want to drop alot of $$$ until I really know what I want and there seem to be many choices ... I obviously am not getting this off-the-bat. This is what I have tried: 1) I flash upgraded the card (FBSD kernel warned me it was too old). 2) I ran the daccf util, chose 'automatic configuration', it said that RAID 5 was the default. 3) I initialized the 'system drive' (took forever, I guess this is a slow card). 4) I only get 32 GB yield: # /dev/mlxd0c: type: ESDI disk: mlxd0s1 label: flags: bytes/sector: 512 sectors/track: 32 tracks/cylinder: 128 sectors/cylinder: 4096 cylinders: 16381 sectors/unit: 67100640 rpm: 3600 interleave: 1 trackskew: 0 cylinderskew: 0 headswitch: 0 # milliseconds track-to-track seek: 0 # milliseconds drivedata: 0 8 partitions: # size offset fstype [fsize bsize bps/cpg] c: 67100640 0 4.2BSD 2048 16384 89 # (Cyl. 0 - 16381*) And when I try mlxcontrol, it says : newgate# mlxcontrol status mlx0: DAC960P/PD, 3 channels, firmware 2.73- -48, 4MB RAM mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlx0: command failed - rebuild successfully terminated mlxd0: critical The critical I understand, I build a fileystem on the 32 GB array and turned off one drive. Which brings up another question: is there the possibility (with this or any other controller) for rebuilding the array without bringing the machine down? Shouldn't 6 x 36GB on RAID 5 yeild 180Gb? Bios start up screen : DAC960P BIOS Version 1.41 - 15 May 96 Mylex Corporation Spinning up drives ......... DAC960 Firmware Version 2.73-0-0 DAC960 Memory = 4 Mbytes (DRAM) WARNING: 1 system drive is critical WARNING: The following SCSI device is dead : Chn 0, Tgt 2 BIOS Enabled - Press <Alt-M> to Disable BIOS 1 system drive installed Press any key to continue Dmesg output : mlx0: DAC960P/PD, 3 channels, firmware 2.73-0-00, 4MB RAM mlxd0: <Mylex System Drive> on mlx0 mlxd0: 32765MB (67102720 sectors) RAID 5 (critical) TIA for any help I recieve.
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