I hope this is the right forum, if not please advice whwre should i ask this question?
I am working on a solution for a customer with a DR over WAN 10Mbps this could be a little bit more I need to come up with recomendation for this link! I am proposing the following:
Production - UCS Blades in a ESX4.1 - SRM cluster with a datastoreaon a NS120 with 21 600G FC drives including Vault.
Normal applications including SQL, Exchange 2010 etc
DR Older IBM Blades ESX too and the same Storage as production
My questions is, what would be the best choise to use connection Celerra ISCSI or NFS. I am looking at best performance with ESX and also be able to replicate with Celerra replicator?
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take a look at this page, they have a lot of good resources that can guide you with your design.
In my shop we deploy light use stand alone SQL servers on regular NFS datastores, heavy hitters go onto fiber channel storage (VMAX) with RDM LUNs.
Currently they are not in cluster so i suspect that it will continue to be none clusterd....... sorry I am not good on microsoft but should the customer be considering cluster even in a virtual environment or not?
It depends, you already have HA with ESX as it is, it protects you from hardware failure. Some customers wants to protect from application failure as well so they setup Microsoft clusters using virtual machines as cluster nodes. If you require MS Clustering you will need to present iSCSI LUNs directly to your VMs (RDM physical mode).
We prefer NFS just for the fact of simplicity, it’s so much easier to setup it up vs iSCSI. Some argue that iSCSI gives better performance under certain workload, in my shop heavy hitters go onto fiber channel LUNs while everything else goes onto NFS datastores. You are not losing any functionality with NFS nor iSCSI, both are supported for storage vmotion (Enterprise and Enterprise +).
Thanks, I beleive that SRM is also supportd with Celerra ISCSI and NFS, Just one more question, How can i deploy SQL on a NFS datastore if SQL require block level access for the db? do I need a mix of NFS for the application and Celerra iSCSI for the Database. you see, I need to replicate all with celerra replicator over a IP link?
You will present NFS export from Celerra to your ESX server where you will create a datastore. Your VM will be created inside of that datastore, as far as VM is concerned it can’t tell if it resides within a datastore that resides on FC , iSCSI on NFS export
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Yes but I thought that the SQL databese was required to be in a block level access LUN like iscsi or FC?
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i just double checked vSphere 4.1 release notes and looks like iSCSI, NFS and FCoE are not supported, for some reason i thought that had changed in 4.1...bummer