Hi
I am just getting into the whole clustering and high availability area, particularly focusing on hyper-v. I already know about having redundancy for all the components which make this solution up with the exception of storage. I was wondering if someone could point me in the direction of how to make separate storage systems provide redundancy or work together, I have the following scenario and information (none of this has been purchased yet):
Two node hyper-v cluster
Two NAS devices which support iSCSI (each NAS device states it will do replication to the other NAS device, but how current this replication will be I am unsure of). Specifically this is “QNAP TS-869 PRO 8TB 8 Bay NAS Server with iSCSI” details can be found http://www.misco.co.uk/product/Q556273/QNAP-TS-869-PRO-8TB-8-Bay-NAS-Server-with-iSCSI
Within each NAS device there are 8 drives which can be configured as RAID in various levels, but what I am struggling to understand is how to make my two node cluster continue to provide service should an entire NAS device be taken out of operation. Is there some magical way these devices can be put together in a similar way to how RAID 1 works at the disk level? Is there a way our cluster nodes could mirror the data directly across both of these NAS devices.
I will be using the free edition of server 2012 R2 Hyper-V but if there are some features in the full product which allow us to do what I am after I am happy to hear your thoughts. Also, can a solution be made which doesn’t rely on a separate windows file server cluster to do any of this mirroring as I only will have a two node hyper-v cluster, I am not looking to be throwing loads of servers into the mix to accomplish this really.
Suggestions on other suitable NAS devices, technologies, configurations whatever are all welcomed, the more I understand about this the better. Without being able to mirror the data between two NAS devices this is obviously still a single point of failure for me.
Thank you very much