Thoughts/experiences of SAN attaching V880 to EMC SAN Post: 302108264

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Operating Systems Solaris Thoughts/experiences of SAN attaching V880 to EMC SAN Post 302108264 by reborg on Sunday 25th of February 2007 06:24:27 PM

02-25-2007

Administrator Emeritus

Irrespective of the storage used it is usually much easier if you use host based mirroring, as this allows you to do backups using the detached mirror of a raid 1, and apply the correct logic for making sure the backup is clean, for example to quiece a database while the mirror is being detached.

RAID5 in hardware would protect you from failure of a disk during the time the mirror is deatached. Personally I find attached fiber storage much easier to work with than SCSI becasue there is no need for example to configure multiple initiators and things like that, also it much easier to configure a multi-pathed configuration.

You could consider doing a mixture of the two, something like 3511 JBODs, with SATA disks and attached them using fiber HBAs, you wouldn't have the RAID 5, but you would have the extra low cost storage. This would also offer you the possibility of moving onto the SAN at a later stage, with much less work.

Last edited by reborg; 02-26-2007 at 10:29 PM..

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LEARN ABOUT DEBIAN

jigdo-mirror

JIGDO-MIRROR(1) 														   JIGDO-MIRROR(1)

NAME

       jigdo-mirror - Maintain a mirror of images offered with jigdo

SYNOPSIS

       jigdo-mirror [ config-file ]

DESCRIPTION

       See jigdo-file(1) for an introduction to Jigsaw Download.

       jigdo-mirror  is a script intended for people who want to offer direct HTTP or FTP downloads of files for which only the jigdo and template
       files are available.

       As the first step of using jigdo-mirror, you need to set up normal HTTP/FTP/rsync mirroring both of the `.jigdo'/`.template' files  and	of
       the  parts  that  are  needed  for the reconstruction of the images. For example, in the case that you want to mirror Debian CD images with
       jigdo-mirror, you need a mirror of the `.jigdo'/`.template' files and a Debian mirror on the local machine.

       At regular intervals (preferably immediately after the normal mirroring has finished), schedule a  run  of  jigdo-mirror.  It  will  search
       through a given directory for any `.jigdo' files and attempt to create all images offered by each file.

       The  script  requires  you  to  set a number of variables - please refer to the start of /usr/bin/jigdo-mirror for a description of each of
       them. Since /usr/bin/jigdo-mirror will be overwritten whenever you upgrade jigdo-mirror, it is highly recommended not to  change  the  set-
       tings  directly	in  this script. Instead, personal settings should be saved in a file called .jigdo-mirror in your home directory, or in a
       different file whose name is then passed to the script as its first (and only) command line argument.

SEE ALSO

       jigdo-file(1), jigdo-lite(1)

       CD images for Debian Linux can be downloaded with jigdo <URL:http://www.debian.org/CD/jigdo-cd/>.

AUTHOR

       Jigsaw Download <URL:http://atterer.net/jigdo/> was written by Richard Atterer <jigdo atterer.net>, to make downloading of  CD  ROM  images
       for the Debian Linux distribution more convenient.

								    19 May 2006 						   JIGDO-MIRROR(1)