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vSphere / Space Reclaim / SAN Replication
Hi there,
In my company, we have two SAN groups (Dell EQL PS6100) with replication configured on each volume of a SAN group. Sometimes we need to proceed space reclaim on a specific SAN volume.
To do so, I need to disable the replication on this volume, I execute the space reclaim on a mapped ESX host and then I reconfigure the replication which will create a new replica set (with a full first copy).
During this operation (according to the volume size, a few hours), if something goes wrong on the SAN volume, we lost the VMs hosted on this volume because the first replica hasn't been created yet.
I could keep the replica set before disabling the replication, but the target SAN doesn't take into account the new volume size ... I have also thought about cloning the replica before disabling it (and destroying it) but it will take so much time ...
Has anyone got an other idea to keep protected the data when I proceed a space reclaim ?
Thank you in advance
Anonymous
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September 29th, 2014 06:00
Hello,
You are very welcome.
Re: Clone. Yes clone creation is very fast regardless of size of the volume.
Re: Replica clone. Yes, it will remain if you delete the replica set.
Anonymous
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September 26th, 2014 07:00
Hello,
Do you also have a backup strategy for your datastores? Other than as you mentioned cloning it, I don't know of another work around in the event of a major issue with the primary storage group.
Regards,
desperadeo
7 Posts
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September 29th, 2014 02:00
Hello,
Thank you for your reply. We also have a strategy to backup daily the datastores.
I just experiment to clone a replica and the clone (200GB in-use) has been created instantly ... I thought the process would take a while according to the size of data to copy (from the replica to the clone). Would it be same for a larger volume (3TB for instance) ?
What gonna happen if just after creating a clone of a replica, I remove the whole replica set, should the datas still be accessed in the clone ?
desperadeo
7 Posts
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September 29th, 2014 06:00
That's really great !
I initially opened this case because i was told that cloning a replica would take as much time as creating the first replica (an integral volume copy means a few hours). To my mind, i haven't really considered this option before testing it this morning.
It's finally the best work around to keep our data protected whenever we proceed a space reclaim on a SAN volume.
Many thanks for your reactivity :)
Anonymous
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September 29th, 2014 08:00
You are very welcome!