?
Solved

Lun size

Posted on 2016-07-19
1
Medium Priority
?
94 Views
Last Modified: 2016-07-20
Hi,
I use two MD3200i for iSCSI storage on my VMware.
I manage several  virtual machines with different disk size, I mean: some with 1 TB disk, some 80 GB, some 200 GB, and so.
What is suggested way to create lun according to various disk size?
Is it better to have little lun with large space, or the opposite?
Thank you
0
Comment
Question by:Armitage318
1 Comment
 
LVL 124

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 41719391
There is no real best practice, or recommendation, it's what best suits your organisation.

Over many years, we generally create LUNs of sizes between 500-800GB, and if requirements are for supersize LUNs, for large virtual machines e.g. 1TB, 2TB or 12TB we create supersize LUNs for those.

Remember, when creating LUNs, to allow for 20-30% free space on the LUN for Memory SWAP files = to the size of memory (RAM) allocated to the virtual machine, and also Snapshots, if you will be using backup software, and monitor the LUN space, e.g. at 75% and 85%.

Also do not allocate ALL your space from your MD3200i, it's often wise to allocate and create LUNs as and when you need them.

Sometimes, you may run out of space on a LUN, and it's very quick and easy to expand a LUN, if you have free unallocated storage, if you have non left because you've allocated it all out to VMs/LUNs, you are then faced with moving VMs off the LUNs (datastores) to a new datastore.
0

Featured Post

How to Use the Help Bell

Need to boost the visibility of your question for solutions? Use the Experts Exchange Help Bell to confirm priority levels and contact subject-matter experts for question attention.  Check out this how-to article for more information.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article shows how to use a free utility called 'Parkdale' to easily test the performance and benchmark any Hard Drive(s) installed in your computer. We also look at RAM Disks and their speed comparisons.
August and September have been big months for VMware—from VMworld last month to our new Course of the Month in VMware Professional - Data Center Virtualization. We reached out to Andrew Hancock, resident VMware vExpert, to have a more in-depth discu…
This tutorial will walk an individual through the process of installing of Data Protection Manager on a server running Windows Server 2012 R2, including the prerequisites. Microsoft .Net 3.5 is required. To install this feature, go to Server Manager…
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…

839 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