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Full Discussion: corrupt disk
Operating Systems HP-UX corrupt disk Post 302577547 by methyl on Tuesday 29th of November 2011 10:22:54 AM
Old 11-29-2011
I think that the guys on ittoolbox.com are giving you the same sort of advice (get an Ignite backup of vg00 , and also get a backup of your data):
http://unix.ittoolbox.com/groups/tec...-of-os-4515267

Running a computer server with no resilient disc system and no backup is not sensible. You need both.

Oracle used to advise against RAID disc systems (notably software RAID) on performance grounds. They also used to made recommendations about the file mapping across multiple discs. A modern hardware RAID system or a SAN is transparent to Oracle.

Just in case you don't have a copy, this unsupported document "When good disks go bad" is a good read. Apart from showing how easy it can be to recover in a resilient system, it also shows the commands to test a disc with "dd".
http://bizsupport2.austin.hp.com/bc/.../c01911837.pdf
HP links can go dead, so do save a copy.

I've seen your error message both from a disc with a tight SCSI cable ... and from a disc which failed totally a few minutes later. You can also get this message (followed by a SCSI reset) if you replug SCSI devices with the power on.
Last edited by methyl; 11-29-2011 at 07:40 PM.. Reason: qualify
 

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LEARN ABOUT SUNOS

lsimega

lsimega(7D)															       lsimega(7D)

NAME

       lsimega - SCSI HBA driver for LSI MegaRAID 320-2x SCSI  RAID Controller

       The lsimega SCSI RAID  host bus adapter driver is a SCSA-compliant nexus driver that supports LSI MegaRAID 320-2x SCSI RAID devices.

       The  lsimega  driver supports  standard	functions provided by the SCSA interface, including RAID disk I/O  and	passthrough I/O to support
       SCSI tape and CDROM.

DRIVER CONFIGURATION

       The lsimega.conf file contains no user configurable parameters. Please configure your hardware through BIOS.

       The LSI MegaRAID 320-2x device can support up to 40 logic drivers. Note that BIOS numbers the logic drives as  1  through  40,  however	in
       Solaris these drives are numbered from 0 to 39.

       See attributes(5) for a description of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |				   |
       +-----------------------------+-----------------------------+

FILES

       /kernel/drv/lsimega

	   32-bit ELF kernel module.

       /kernel/drv/amd64/lsimega

	   64-bit kernel module ( only).

       /kernel/drv/lsimega.conf

	   Driver configuration file (contains no user-configurable options).

       prtconf(1M),   attributes(5),  amr(7D),	scsi_hba_attach(9F),  scsi_sync_pkt(9F),  scsi_transport(9F),  scsi_inquiry(9S),  scsi_device(9S),
       scsi_pkt(9S)

       Small Computer System Interface-2 (SCSI-2)

								   20 April 2005						       lsimega(7D)
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