mirror virtual machines on another nas

Posted on 2010-11-17
Last Modified: 2012-05-10

I have an esxi server and the virtual machines are stored in a thecus nas using iSCSI.
I have a second nas where I wanted to synchronize/mirror the vm's every day for disaster recovery
After struggling a lot with thecus firmware which doesn't allow iSCSI sync, and reading it is not reccomended to connect to an iSCSI target from two different sources (I was trying to have a windows server mirror the tho iscsi targets using ms software initiator), I'm thinking of installing openfiler or freenas on the thecus nas.

is it possible to mirror iscsi targets from one openfiler (or freenas) to another, while the vm's are running?
is it possible to connect to more than one iscsi target with esxi 4.0?
Question by:uilli
  • 2
  • 2
  • 2
LVL 28

Accepted Solution

bgoering earned 250 total points
ID: 34155311
You can connect to multiple iSCSI targets from ESX(i) 4.x. You could also consider Veeam FastSCP or VMware Converter to make your daily copies.

Good Luck

Assisted Solution

minki12 earned 250 total points
ID: 34160491
on openfiler or freenas drbd is typically the way most people go. drbd will keep a set of disks on seperate machines syncronized and can be setup to autofailover using heartbeat.

Author Comment

ID: 34163088
thanks for the insight guys.
I found out I couldn't connect to the 2 iscsi targets because they had the same lun ID.
Now that I can connect to both nas systems through the same esxi server, is there a good (and free) way to clone the virtual machines while they are running?
Easy, flexible multimedia distribution & control

Coming soon!  Ideal for large-scale A/V applications, ATEN's VM3200 Modular Matrix Switch is an all-in-one solution that simplifies video wall integration. Easily customize display layouts to see what you want, how you want it in 4k.

LVL 28

Expert Comment

ID: 34163602
You can use the free VMware converter ( to copy a running vm to a new datastore. That way you have a point in time copy for backup purposes.

Good Luck

Expert Comment

ID: 34164442
Are you planning on pausing/shutting down the vms for a backup window? If not raw copies may be corrupt when trying to load. the vmware vcb should be able to do this for you.

Author Comment

ID: 34165022
thanks for the responses, I think I'm going to use mksbackup + ghettovcb for backing up powered on machines.
if someone is looking for the same solution here's a helpful link

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
San to San Replication Slowness/Issues 3PAR 7000 5 43
Offsite Replication Solution 7 62
HOw To Install Docker on VMware Workstation 19 169
VM delta disk 2 20
Facing problems with you memory card? Cannot access your memory card? All stored data, images, videos are lost? If these are your questions...than this small article might help you out in retrieving your lost or inaccessible data.
Learn how the use of a bunch of disparate tools requiring a lot of manual attention led to a series of unfortunate backup events for one company.
This tutorial will walk an individual through configuring a drive on a Windows Server 2008 to perform shadow copies in order to quickly recover deleted files and folders. Click on Start and then select Computer to view the available drives on the se…
This video shows you how to use a vSphere client to connect to your ESX host as the root user. Demonstrates the basic connection of bypassing certification set up. Demonstrates how to access the traditional view to begin managing your virtual mac…

860 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