Written by Sam McGeown on 16/10/2009
Published under Microsoft
If you have an Alternate Access Mapping configured for a MOSS 2007 site with Integrated Authentication you might find that you get prompted for the DOMAIN\UserName and Password. After 3 attempts you get to a HTTP 401 error. This can be resolved by following the steps in MS KB 896861 HTH, Sam
Written by Sam McGeown on 14/10/2009
Published under VMware and vSphere
I’m migrating some hosts off of an older storage LUN, but when I drag the disk to the new Datastore with the SVMotion plug-in the job fails with the following error: The error occurs because the virtual disk cannot be moved without moving the source files, the .vmx, .vswap etc. Simply drag the entire VM, rather than the virtual disk to the new Datastore. If you’re trying to move a 2nd, 3rd or nth disk and you get this error, drag the entire VM as per above over to the new Datastore, once that’s completed, go back in to SVMotion and drag the whole VM across again, only this time before you apply, drag the nth disk back to the new Datastore.
Written by Sam McGeown on 2/10/2009
Published under VMware
A.K.A Why not to use snapshots I ran into a slightly confusing problem today - our SQL servers are all created with 4 disks on 4 separate LUNs (System, Swap, SQL Data and SQL Logs). When viewing the server through Virtual Center I couldn’t see all of the LUNs, just the System LUN. It’s not a major problem as the VM can see the storage, but a little annoying when you have to remember what LUN the disks are on.
Written by Sam McGeown on 30/9/2009
Published under Networking and VMware
Here’s the setup. We have a core switch of 2 Cisco 3750s, connected together for fault tolerance as a single logical switch; we also have several ESX 3.5 hosts with 4 Gigabit Ethernet NICs installed each. The Virtual Machines will all be on VLAN 8 (reserved for internal servers) and the VMKernel will be on VLAN 107 (reserved for VMKernel traffic like VMotion). I want to create a load balanced, fault tolerant aggregate of these four NICs over the Core Switch.
Written by Sam McGeown on 21/9/2009
Published under Microsoft and Networking
I recently resolved an ongoing DNS issue where the Active Directory Integrated DNS was loaded in both the Domain and the DomainDNSZones partition of AD - this is a separate issue and should be resolved differently. My problem when I tried to verify that the fixed DNS setup had propogated around my domain controllers, DC01 and DC02. DC01 kept failing “DCDIAG /TEST:DNS” with errors regarding the root hint servers. Googling about it was clear that a lot of people were suffering the same issue, but no article I read had correctly identified the solution.
Written by Sam McGeown on 10/9/2009
Published under
I recently had an issue where a hosting environment was registering a lot of Netlogon Event 1030/1058 issues, being unable to find the Group Policy objects or download them. In this example, the server DC is the domain controller for DOMAIN.LCL. _Event Type: Error Event Source: Userenv Event Category: None Event ID: 1030 Date: 10/09/2009 Time: 06:24:29 User: NT AUTHORITY\SYSTEM Computer: DC Description: Windows cannot query for the list of Group Policy objects.
Written by Sam McGeown on 17/7/2009
Published under
Why should a home user backup? Most don’t, most people just have their photos, music and video collection on a single hard drive, maybe an external drive or even a USB key. Unfortunately, no-one ever thinks about what they’d do if their drive were to fail, losing all their precious holiday snaps, their slightly embarrassing music collection, or perhaps their family finances. But stop and think for a second – can you really replace those holiday snaps?
Written by Sam McGeown on 7/7/2009
Published under Microsoft
Like thousands of other IT pros out there, I’m testing Windows 7 out on my laptop - since I don’t want to mess around with my main PC, it’s running on some older kit. The problem with that is that there aren’t many Vista drivers around for the hardware - why would there be, it’s not even supposed to be able to run Vista?! It does, however, run Windows 7 very admirably (just one of the many improvements).
Written by Sam McGeown on 2/7/2009
Published under
I’m in the middle of rolling out Sophos as a replacement to the incumbent McAfee at work. One interesting thing that I found as I rolled out to some test users was that they were unable to log on to one of our internal systems using NTLM (integrated authentication). Instantly the roll out of Sophos was blamed - and I can understand why - the problem did not occur until Sophos was installed.
Written by Sam McGeown on 1/5/2009
Published under
I have to support about 20 laptops with 3G connections in them, they’re all Dell and range from D800s with PCMCIA 3G data cards, D830s with internal Dell Wireless 5520 Modems and some newer E4200s with internal Dell Wireless 5530 Modems. Both the D830s and the E4200s are shipped with Dell software to manage the connections. The D800s use Vodafone Mobile Connect, and have never, ever, caused me a problem.