Tag Archives: esx

vSphere: Convert RDM to VMDK and vice-versa on Windows VM with no downtime

This method will work for non-OS disks (so not your C drive), and will not require the server or application to go down during the process. You need a version of Windows that supports software RAID, which includes all versions … Continue reading

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Posted in Storage, vSphere, Windows | Tagged , , , , , , , , , , , , , , , | 6 Comments

Active Directory authentication for ESXi host management

This was not as straightforward as I’d hoped. Apparently¬†(see video – ugh, why not bullet points?), you just add the host to AD, create an Active Directory security group called ESX Admins, stick the users in the group and voila, … Continue reading

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Posted in vSphere | Tagged , , , , , , , , , , | 2 Comments

VMware ESX/ESXi issues with Broadcom 5719 quad port Gb NIC

I’ve got some new servers with Broadcom quad port 1Gb Ethernet NICs in, model 5719. Nine of the servers are running ESX 4.1 update 2 502767, one is running ESXi 5.0 update 1 623860. Two servers have experienced this issue. … Continue reading

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Posted in Networking, vSphere | Tagged , , , , , , , , , , , | 40 Comments

VMware vSphere Security

What a can of worms this topic seems to be. I suspect it’s mostly because of the stepping on toes that VMware environments cause to medium-to-large size organisations, i.e. those that are big enough to have separate network and server … Continue reading

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Posted in Uncategorized, vSphere | Tagged , , , , , , , , , , | 1 Comment

VMware ESX 4.1 install onto Dell R720 via iDRAC 7 Enterprise

Bit of a fiddle as the ISO of ESX 4.1 update 2 does not contain any suitable network drivers for the R720. This causes it to fail. On other servers, at least the onboard NIC has been detected, so I’ve … Continue reading

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Posted in Hardware, vSphere | Tagged , , , , , , , , , , , , , , , , , , | 5 Comments

VMware, RDMs and EMC Clariion

So here’s an interesting “feature”: I suspect most people with a Clariion also have a licence for Access Logix, aka Storage Groups, i.e. LUN masking. If you have a Clariion but don’t have Storage Groups then all your LUNs are … Continue reading

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Posted in vSphere | Tagged , , , , , , , , , , | 1 Comment

Powerpath/VE ESX 4.1 install

Having read through the instructions, messing about with adding .vib .sig and .xml MIME types to an IIS server, I realised that if you’re using ESX (i.e. not ESXi) you can just SSH onto the service console and use esxupdate … Continue reading

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Posted in vSphere | Tagged , , , , , , , | 1 Comment

Unable to power on VM: Virtual disk is not accessible on the host

When trying to power on a vSphere Virtual Machine you get the message: Virtual Disk ‘Hard disk x’ is not accessible on the host: Unable to access file [Datastore Name] <VM name>/<VM name>.vmdk You’ll also get an error box pop … Continue reading

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Host disconnected in vSphere client

Have had this a few times, but today the host didn’t want to play after the usual restart of the mgmt-vmware service. Full information:¬†I had a vSphere 4.0 host showing as disconnected in the vSphere client. Host and all of … Continue reading

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Posted in vSphere | Tagged , , , , , , , | 2 Comments

NetBackup VMware status code 156 failure

Using NetBackup 7.0.1 and vSphere 4. Tried to backup a new v7 VM and got a 156 failure from NetBackup. Within vSphere client the following error was displayed when NetBackup tried to take a snapshot of the VM: Cannot create … Continue reading

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