Solved

ESXi - Cannot use all available space on a LUN.

Posted on 2009-05-07
6
961 Views
Last Modified: 2012-08-13
Hopefully i'm missing something, but here goes:

I have a brand new install of ESXi. There are 2 RAID Arrays, one 74Gb array with the OS installed and one 3.4Tb array which i want to convert into a datastore to house VM's. My problem is, when i go to add the 3.4Tb datastore it will only "see" 1.4Tb of space (if i look at the storage adapter, it sees the LUN as a 3.4Tb blank drive).

How do I make the whole 3.4Tb usable?

TIA...
0
Comment
Question by:CorruptedLogic
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 22

Accepted Solution

by:
65td earned 300 total points
ID: 24332252
The maximum VMFS lun is 2 TB.
Could use extents, not recommended, would crave the 3.4 TB into 2 data stores, your choice (1.95 TB and 1.45 TB as an example).

ESX maximums:
http://www.vmware.com/pdf/vi3_35/esx_3/r35/vi3_35_25_config_max.pdf 
0
 
LVL 7

Author Comment

by:CorruptedLogic
ID: 24332327
Thanks, that makes sense. however, the fact that it will not allow me to create anything at all larger than 1.4Tb and the fact that once i do create a 1.4Tb drive and then it reports no more free space on the LUN still confuses me....
0
 
LVL 22

Expert Comment

by:65td
ID: 24332344
Probably need to delete the lun then recreate via the array controller with lun sizing set to <2 TB for each lun created.
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 19

Assisted Solution

by:vmwarun - Arun
vmwarun - Arun earned 100 total points
ID: 24332999
My suggestion would be to delete the LUN which you have created (please make a backup of data inside the LUN before attempting this).
Once the LUN has been deleted, recreate the LUNs as 65td has suggested (2 TB + 1.4 TB)

Then rescan your Adapters and add the LUN (2 TB or 1.4 TB or both one by one) by formatting it with VMFS (VMware File System)
0
 
LVL 7

Author Comment

by:CorruptedLogic
ID: 24336956
Not to beat a dead horse, but, does anyone have any insight as to why it would not let me create a 2Tb disk on the LUN as it currently stands? (i'm somewhat hesitant to blow away the 3.4Tb array and create two smaller ones in case i end up getting the same issue again)..
0
 
LVL 8

Assisted Solution

by:markzz
markzz earned 100 total points
ID: 24337780
You will not have the same issue but for ESX to use the full 3.4 TB you will need to present to ESX 2 LUNs
Personally I would present 4 LUNS of 1TB, 1TB, 1TB, 400GB.
It's much more manageable and will enable significant flexibility particularly when cloning or more importantly resolving issues with failed snapshots and the like.
The only reason you would present larger LUNs is that you have individual guest sessions which require more than 1TB of disk assigned to them.
Hope this helps.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

In this step by step tutorial with screenshots, we will show you HOW TO: Enable SSH Remote Access on a VMware vSphere Hypervisor 6.5 (ESXi 6.5). This is important if you need to enable SSH remote access for additional troubleshooting of the ESXi hos…
In this article, I am going to show you how to simulate a multi-site Lab environment on a single Hyper-V host. I use this method successfully in my own lab to simulate three fully routed global AD Sites on a Windows 10 Hyper-V host.
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…
Teach the user how to install log collectors and how to configure ESXi 5.5 for remote logging Open console session and mount vCenter Server installer: Install vSphere Core Dump Collector: Install vSphere Syslog Collector: Open vSphere Client: Config…

730 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