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The End of Centralised Storage

That is a pretty drastic title, especially given that I spend a significant part of my day job working with EMC storage arrays. The other day I replied to a tweet by Scott Lowe :

Open Source Virtual SAN thought experiment

Okay, I know I am little slow on the uptake here, but I was on holiday at the time. The announcement of Virtual SAN at VMWorld the last week got me thinking a bit.

Very briefly, Virtual SAN takes locally attached storage on you hypervisors. It then turns it into …

Automated GlusterFS


"> As I promised on Twitter, this is how I automate a GlusterFS deployment. I\'m making a few assumptions here:
  • I am using CentOS 6, so should work on RHEL …
Stop the hate on software RAID

Stop the hate on software RAID

I've had a another bee in my bonnet recently. Specifically, it has been to do with hardware vs software RAID, but I think it goes deeper than that. It started a couple of months back with a discussion on Reddit. Some of the comments were:

Get out, get out now …

The Linux to Storage

Martin "Storagebod" Glassborow recently wrote an interesting article where he asked "Who'll do a Linux to Storage?". As someone who is equal parts Storage and Linux, the same question runs around my head quite often. Not just that, but how to do it. It is safe to say that all …

Something from the shadows

An intriguing startup came out of stealth mode a few days ago. Pernix Data was founded by Pookan Kumar and Satyam Vaghani, both of who were pretty near top of the pile in VMware\'s storage team.

What they are offering is, to me at least, a blinding flash of …

Add SAN functions to Highly Available NFS/NAS

This based on my last post where I documented building a Highly Available NFS/NAS server.

There is not a huge amount that needs to be done in order to add iSCSI functionality as well.

Add a file called /etc/drbd/iscsi.res containing:

resource iscsi {
    on nfs1 {
        device /dev …

Highly Available NFS/NAS

Take 2 Centos Servers (nfs1 and nfs2 will do nicely) and install ELrepo and EPEL on them both:

yum install \
    https://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-5.noarch.rpm \
    https://elrepo.org/elrepo-release-6-4.el6.elrepo.noarch.rpm --nogpgcheck

Each of them should ideally have 2 NICS, with the …