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how can a DNS failure affect storage or can it ?

Posted on 2011-10-29
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Last Modified: 2012-08-14
I rememeber years ago and i am not sure how this happened , but i remeber something about DNS going down and not being able to have the esx server see its storage ? i am not sure if it was iscsi or FC or what , but is there any way that you could configure your san storage that it would be dependent on DNS?
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Question by:NAMEWITHELD12
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LVL 124
ID: 37050731
yes, use IP addresses rather than friendly hostnames!
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LVL 124
ID: 37050732
or hardcode the DNS names on the ESXi servers, using the hosts file.
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by:NAMEWITHELD12
ID: 37051237
so how can i tell if i might have this issue, i think maybe when you are setting up iscsi you specify the host for the storage  on the esx side and if you use a non ip name like VMSTORAGE you may be vulnerable to a dns outage and reboot ?
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LVL 124
ID: 37051269
correct, if the ESXi server cannot resolve domain names from your dns servers. so either

1. use ip addresses only, no friendly host names
2. use a local hosts file on the esx server

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by:NAMEWITHELD12
ID: 37051587
do you mean the name here ?

 d
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LVL 124
ID: 37052567
No, the name you use for iSCSI.
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by:NAMEWITHELD12
ID: 37053096
where can i check this?
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LVL 124

Accepted Solution

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Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 37053191
Checkout my video, which shows the steps of adding iSCSI storage.

New HD Video - Adding iSCSI storage to a VMware vSphere ESX/ESXi 4.x host server
http://andysworld.org.uk/2011/06/24/new-hd-video-adding-iscsi-storage-to-a-vmware-vsphere-esxesxi-4x-host-server/
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LVL 124
ID: 37053197
about 53 seconds into the video
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