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Archive for the ‘Virtualisation and Storage’ Category

VMware, UAG, DirectAccess pt2

October 24, 2011 Leave a comment

 

Hallo again Smile

 

Had some rather nifty issues with a DirectAccess array the other week – so I thought I would return here and blog it! Smile

 

In short, everything was working fine apart from one very small part – “Manage Out” via IPHTTPS tunnel wasn’t functioning.

 

In short, clients were connecting the IPHTTPS tunnel before the Teredo was up. Whilst IPHTTPS is connected it will be preferred over Teredo (or 6to4) and disconnects after a random amount of time.

Clients could route traffic down here – so connecting to Intranet services was fine. Tunnel was up on both parts (Intranet/Infrastructure) and everything worked fine apart from “Manage Out”. Routes all fine, Windows Firewall (client-side) all fine.

 

Queue some hair tearing etc etc.

 

Raised a call with MS eventually – and in short its VMware causing the issue.

 

To quote MS (slightly edited to make sense outside of the Email trail);

 

We have had similar cases before where VMWare template provisioning was used for the UAG hosts, and can confirm that the problem was down to the template creating duplicate adapters that would affect tunnel bindings when configuring UAG DA. And the solution was to rebuild using standard media which completely addressed the issue.

 

Ouch. Oh well, rebuild we must (I’ll update once they are done!)

 

Had some other interesting information too regarding VMware, Unicast and DA NLB. I’ll update my original post here

Bluescreen when saving to Shares with symbolic links (wide links) on a NetApp with Kaspersky installed

July 6, 2011 Leave a comment

 

Phew, what a title!

 

Had a customer recently who I was working with on doing a Netware –> NetApp CIFS migration utilising the Quest NDS tools.

 

All was working fine until one unlucky user attempted a save to a “Volume” share, they received a BSOD (repeatedly if they attempted again).

 

Now, to explain the NetApp CIFS configuration a little before ploughing on;

 

There are three shares created on the new NetApp;

SHARE1
SHARE2
VOL1

VOL1 contains symbolic links (wide links) to SHARE1 and SHARE2 to allow historic applications looking for \\SERVER\VOL1\SHARE1\FILE1.EXT to function.

 

The customer was also mid-AV upgrade – from McAfee to Kaspersky.

 

When a Kaspersky-running client attempted to save (via Office for example) they received a BSOD with the header RDR_FILE_SYSTEM (27). A Bug check analysis didn’t give me any more info (aside from an “Access Violation” error further down).

 

Testing was done with different XP SP/Office levels before we turned to the AV – and sure enough it looked to be Kaspersky.

 

Kaspersky replied to the support email sent very promptly – outlining this was a known bug in XP/2003 but Microsoft had only released a patch for Server 2003. However they had their own patch – which seemed to resolve the issue. I believe it to be a private release patch at the moment – however they have said it will be written into the next point release Smile

 

Hope that helps someone anyway Smile

Hosts “not responding” after joining Virtual Centre to Active Directory

March 2, 2011 Leave a comment

Had a bit of a scary moment today – joined the Virtual Centre server to an AD so I could install backup technologies onto it.

 

All went fine aside from when I opened the vShpere client – all my hosts were marked as “not responding”.

image

Re-connected the hosts (as it can be seen above) – and the hosts popped back in and then back out again. Hmm not good!

Checked DNS, all right as far as I can see. Checked time sync, all right again.

 

Rather bricked myself, so off I went uninstalling the Virtual Centre server and reinstalling (using the existing DB) and voila! all is good.

 

In short, if you do have to join your Virtual Centre to AD, do it before you put Virtual Centre on it or reinstall afterwards!

Cluster Firewall issue – An item with the same key has already been added.

January 29, 2010 1 comment

When running a HA cluster verification you may get the following;

An error occurred while executing the test.
There was an error verifying the firewall configuration.
An item with the same key has already been added.

This is typically because the NIC GUID is duplicated between cluster nodes.

This could be because servers were deployed from an image, or cloned. Personally I had this with a VMware deployed server from a Template.

Remove and re-add a new NIC (add the new one first to be sure) and re-validate 🙂

NetApp SnapDrive and creating MSCS LUN’s

January 29, 2010 2 comments

When creating a LUN for a new MSCS, here is the methodology;

 

  1. Create the Volume (and Qtree if required)
  2. Create the LUN from one potential node.
  3. Create a new cluster and add all nodes (failing to do so will not allow you to add the LUN’s with the following err0r;)
    image
  4. Connect the disk and voila! (All additional disks can be created now the Cluster is up)

Timedrift with Linux Guest VM under Hyper-V R2

January 21, 2010 4 comments

Recently had a Linux guest VM timedrifting considerably under Hyper-V R2. I contacted the Linux IC team, who responded stating there was a known issue and they had written a script to “work around” it 🙂

Below is the Linux Clock Sync script.

DISCLAIMER: I did not write this script, nor will I be able to support you on the use of it. Any issues should be sent to the support email address at the end of the script.

Read more…

Configuring a NetApp disk via SnapDrive – LUN Path and Name settings

January 19, 2010 Leave a comment

 

Just a quickie to remind myself of some NetApp settings 🙂

image

LUN Path = qtree object path (click through)

LUN Name = volume name.lun

 

Ciao! 🙂

Categories: NetApp, Storage