If you use Windows templates and Windows Update Services, you could see a weird behaviour inside Windows Update Services. Figure this scenario: from the same template, you created three servers Server1, Server2 e Server3. By turns, only one of these servers appears in WUS, and then it disappears in favor…
Category: Tech
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The importance of mixing nics in a vswitch
I always advice my customers about the importance of creating virtual switch using nics coming from both motherboard and addon cards, mixing them. The reason is simple: redundancy. Using for example two nics, one from the motherboard and the other from the addon card, virtual switch will work even if…
VCP5: my experience (and some useful study resources)
Last week I passed the VCP5 exam. I will not give you any detail about the exam, but only my general experience: after reading around many reviews, I found most of them agreed about the exam beeing tougher and more selective than VCP4. I would not like to seem offbeat,…
Symantec Application HA 6.0
I was recently at a Symantec presentation, where they demoed Application HA. After a brief introduction about VMware HA (and the unfailing question “better to have physical or virtual vCenter?”), they explained the new HA in vSphere 5, particularly how VMware opened this system to third parties via API to…
#Veeam HotAdd mode and IDE disks
If during a Veeam B&R job using Hot Add mode you receive an error like this: Processing the VM in Backup/Replica job in Virtual Appliance (hot-add) mode fails with the following error message: “Backing up object “[XXX_SXN] DXX-SXX2-TXX/DXX-SXX2-TXX.vmdk” BackupDiskFull failed Client error: Failed to open VDDK disk [[XXX_SXN] DXX-SXX2-TXX/DXX-SXX2-TXX.vmdk] (…
Home vLab: my new WhiteBox
I analyzed in a previous article which alternatives are available while designing our own home lab for VMware, and I ended up choosing the WhiteBox way. In the following weeks I looked through the products on the market, in order to find my own solution. I need to say thanks to my…
#Veeam Error “failed to open VDDK” and cached credentials
I was configuring a windows server for Veeam Backup & Replication 6 at a customer, and after some days of work I got a weird error while running some new backup jobs just created: Error: Client error: Failed to open VDDK disk [[XXXXXX] VMNAME/VMNAME.vmdk] ( is read-only mode – [true]…
Storage vMotion of a template
If you try to run storage vmotion against a template, you will realize it’s not allowed in the GUI. So, you end up with two solutions: – “quick and dirty”: convert template to VM, run Storage vMotion, convert back VM to template – “SysAdmin style”, useful if you have several…