Solved

SAN Data recovery, VMWARE

Posted on 2012-04-09
6
423 Views
Last Modified: 2013-02-19
Long story short I have a HP MAS1000 that connects via fiber channel to 3 ESX servers.  A power outage hit, and some of the LUNS or Units did not come back online, so my esx shows missing vms.  

When I search the Datastore, I can not look into the luns I am trying to get to.  I called HP and they told me to run the command Accept unit on the MAS1000.  The luns now show good from the san but ESX, can't read the partition table and although I could map it as a new datastore,  I get a warning that says all data can be lost.....(scared)

My issue, are there any tools out there that would allow me to mount those LUNS, to try some sort of data recovery, and is there a good way to back up a LUN that cant be mounted in vmware, I have an extra server with a fiberchannel card, I can install anything on it that would help me out.

Thanks in advance
0
Comment
Question by:Preston55
[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
  • 3
  • 2
6 Comments
 
LVL 42

Expert Comment

by:paulsolov
ID: 37826002
Most of the time the data is corrupt and is unrecoverable.  See if you can clone the LUN first and try any mounting on the cloned LUN.
0
 

Author Comment

by:Preston55
ID: 37826117
One of my problems, is I just don't have the space on the HP MaS1000 to clone it, I do have QNAP which can do NFS and ISCSI mounts, etc...  although I am not sure what to use  VMware DD or even windows to copy from the one store to the other.  Again, I can't actually mount the LUN in ESX, it sees it, but takes to me, the your data will be destroyed warning.
0
 
LVL 121

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 37826561
what output do you get with esxcfg-volume -l

do you get something like this when run

~ # esxcfg-volume -l
VMFS3 UUID/label: 4cc89503-f054d0d4-2865-00221958e471/nas3-vmfs
Can mount: Yes
Can resignature: No (the volume is being actively used)
Extent name: naa.600140588e9bab7d2b7ed4b53dadc1de:1     range: 0 - 1048319 (MB)

and then you can try

esxcfg-volume -m 4cc89503-f054d0d4-2865-00221958e471

or

esxcfg-volume -m nas3-vmfs

to mount the datastores using friendly datastore name or UUID


if you can connect to another Windows system with fibre card, (and be careful not to format the disks, when you re-scan), you could try and run VMFS Recovery

http://www.diskinternals.com/vmfs-recovery/

to recover the VMDK virtual disk files.
0
Quiz: What Do These Organizations Have In Common?

Hint: Their teams ended up taking quizzes, too.

 

Author Comment

by:Preston55
ID: 37827750
Have you used VMFS recovery does it seem to work,

I put an esxi5 box up for testing on this, when I run esxcfg-volume -l it doesn't give me anything

I did a "su -"  went to /usr/sbin, I can help the command esxcfg-volume --? and get a read out but when I do the -l it doesn't list anything.
0
 
LVL 121
ID: 37828325
Yes, VMFS recovery does work.

esxcfg-volume -l should show VMFS datastores.
0
 

Author Comment

by:Preston55
ID: 37828659
Should I install windows to the physical box or do you think I can run a fiberchannel connection through a Win7 VM
0

Featured Post

Free NetCrunch network monitor licenses!

Only on Experts-Exchange: Sign-up for a free-trial and we'll send you your permanent license!

Here is what you get: 30 Nodes | Unlimited Sensors | No Time Restrictions | Absolutely FREE!

Act now. This offer ends July 14, 2017.

Question has a verified solution.

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

Concerto Cloud Services, a provider of fully managed private, public and hybrid cloud solutions, announced today it was named to the 20 Coolest Cloud Infrastructure Vendors Of The 2017 Cloud  (http://www.concertocloud.com/about/in-the-news/2017/02/0…
In this article we will learn how to backup a VMware farm using Nakivo Backup & Replication. In this tutorial we will install the software on a Windows 2012 R2 Server.
Teach the user how to configure vSphere clusters to support the VMware FT feature Open vSphere Web Client: Verify vSphere HA is enabled: Verify netowrking for vMotion and FT Logging is in place or create it: Turn On FT for a virtual machine: Verify …
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…

729 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