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Old 07-01-2008, 06:34 AM   #1
your_shadow03
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Shared Hard Disk as Common Space in Clustering??


I am running short of Shared Storage for Red Hat Clustering and all I need to do is I am having two Hard Disk of 100 GB each .I want it to be looked as common hard disk for the clustering setup.

Is it possible to setup?

Last edited by your_shadow03; 07-01-2008 at 06:37 AM.
 
Old 07-01-2008, 11:09 AM   #2
brianmcgee
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You could use a linux server to setup an iSCSI target or DRBD that exports the harddisks as shareable device.
 
Old 07-02-2008, 12:35 AM   #3
your_shadow03
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Thanks Brian for the reply.
Can you elaborate what do you mean setting up iSCSI Target or DRBD?I am clueless about that.

Any docs which talks about that setup?Any hands-on papers or tutorial.
It would be great if you help me wiht this set up.

Thanks in advance
 
Old 07-15-2008, 04:25 AM   #4
brianmcgee
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For iSCSI see [1], for DRBD see [2].

iSCSI Target is basically a server that resembles a SAN storage and exports it's block devices via ethernet. Also rather cheap hardware solutions are available. The iSCSI Target should not be part of the cluster and it is a bottleneck as well as an single point of failure. iSCSI is more scaleable than DRBD.

On the cluster nodes you will need to configure a iSCSI Initiator, which is a client to read the iSCSI block devices.

DRBD basically is a RAID 1 over the net. Same downsides as iSCSI.

Both technologies make it possible that you have a new shared SCSI device available which you may format with a cluster filesystem.

[1] http://www.cyberciti.biz/tips/rhel-c...csi-howto.html
[2] http://www.linux-ha.org/DRBD/HowTo/Install
 
  


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