Solved

ESXi VM's on a SAN, multiple datastores better?

Posted on 2014-04-10
2
883 Views
Last Modified: 2014-04-11
Using a  3PAR StoreServ 7200  for datastores shared by a couple of vSphere ESXi Hosts running a small number of VM's on each host.

From a performance point of view, is it better to have multiple datastores, with each VM on its own datastore rather than putting all the VM's on a single datastore?

 I'm thinking that maybe separate datastores are similar to separate hard drives and you want to divide I/O between seperate datastores to speed things up.  Does this make sense?  Or does it not work that way with datastores on a SAN?

Thanks.
0
Comment
Question by:gateguard
2 Comments
 
LVL 117

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE) earned 500 total points
ID: 39993480
But all your LUNs on your 3PAR are carved up from the same spindles.

So two datastores on the same spindles, should perform the same.

However, you may want to create multiple datastores, to split the VMs, as not to put all your eggs in one basket, should you have an issue with a single datastore, e.g. corruption etc

So it's common place to create multiple LUNs on the SAN, presented to ESXi, for multiple datastores.

We create LUNs between 500-800GB on average, and some super LUNs of 2TB for very large VMs.
0
 

Author Closing Comment

by:gateguard
ID: 39993608
Thanks!
0

Featured Post

Highfive + Dolby Voice = No More Audio Complaints!

Poor audio quality is one of the top reasons people don’t use video conferencing. Get the crispest, clearest audio powered by Dolby Voice in every meeting. Highfive and Dolby Voice deliver the best video conferencing and audio experience for every meeting and every room.

Join & Write a Comment

When we have a dead host and we lose all connections to the ESXi, and we need to find a way to move all VMs from that dead ESXi host.
David Varnum recently wrote up his impressions of PRTG, based on a presentation by my colleague Christian at Tech Field Day at VMworld in Barcelona. Thanks David, for your detailed and honest evaluation!
Teach the user how to use configure the vCenter Server storage filters Open vSphere Web Client:  Navigate to vCenter Server Advanced Settings: Add the four vCenter Server storage filters: Review the advanced settings: Modify the values of the four v…
This Micro Tutorial walks you through using a remote console to access a server and install ESXi 5.1. This example is showing remote access and installation using a Dell server. The hypervisor is the very first component of your virtual infrastructu…

758 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now