multi site san solution - hp p4000, Dell Equallogic PS4100X, NetApp FAS2240
Posted on 2012-08-23
we are talking with multiple vendors about a vmware upgrade to our two sites. The sites are 300-400 metres apart and I hope to link them together with some fibre before the vmware hardware/software upgrade.
The vendors have proposed solutions that are HP Lefthand, Dell Equallogic and Netapp. My experience is fairly limited in the San space so I thought I would get your opinions on this.
I have seen an HP solution and it looked good to me. From what I understand if we went with the HP solution we would have a solution that is true High Availability where several hardware pieces could fail without having a dramatic impact on the whole. In addition we would be using all of the pieces of hardware (such as the sans) rather than waiting for a san to fail before manually bringing up the secondary one. Because we are using essentially 2 sans instead of 1 active san with another solution (such as Netapp) this to me sounds ideal.
So here are my doubts:
The NetApp solution will cost more (I'm guessing +40% at this point for an active passive solution - but it would be fibre and not iscsi), and the vendor pushing their product specialises in vmware projects. They claim they could offer an HP solution and make a higher profit off of it, but they believe it's the wrong solution.
The Equalogic solution I just don't know enough about at this point (I'm trying to sift through reviews, but I'm finding it difficult to sort through opinions and facts). The cost looks like it will be more than the HP solution as it's roughly the same with slower drives at this point. I'm yet to determine if the Dell solution is an active active cluster or if it's active passive, but I suspect the later is the case.
It would be really helpful if someone could point to why the HP solution is better or worse in this case money aside.
In addition, I've been thinking of dedicating 4 switches with 10Gb modules for a separate redundant physical iscsi network (assuming we go with HP or dell). Is this just plan overkill, and instead I should be using those switches for the servers and iscsi traffic with a separate vlan for iscsi?