Just wanted to quickly post this as I know in the past some of these offers disappear quickly. A chance to get 50% off VCP or VCAP exams at VMware World 2016 https://mylearn.vmware.com/mgrReg/plan.cfm?plan=92708
Around this time last year I believe there was a question either on this community or on the VMware forums about how the VCAP program certifications are received in the work place and if they are worth it. Seeing as my blog portion of my website is still under construction to add new sections like my blog, and the new DCD6 simulator. I really have no better place to post this then vMusketeers. How a certification changed my life: The last year and half has been a whirl wind to say the least, I guess going on 2 years now. Two springs ago around May I decided to start my VCDX track and achieve my DCA. After a few months […]
Dead space reclamation (SCSI UNMAP) Basically the UNMAP command is used when you have Thin Provisioned LUNs, you run it against VMFS 5 datastores, hopefully freeing up some space. This will allow the hosts to correctly report the list of deleted blocks on the datastore to the array. It basically is a space reclamation feature that helps reclaim space left by deleted data. The main reasons you would want to run this on all Thin Provisioned LUNs, would be because of: Storage vMotion, VM snapshots and VM deletion. As even though the VM/Snapshot etc has been deleted it doesn’t mean the array is aware of this! It was disabled in ESXi 5.0, due to various issues and enabled in 5.1 by using […]
Since we announced the retirement of the remaining VCAP5 exams in late March, we have heard from quite a number of you who have requested additional time to prepare for and take those exams. Additionally, we are still working on the development and refinement of the VCAP6 exams (which will replace VCAP5), so these new exams have not yet been released in production. In light of your requests and still-pending VCAP6 exam releases, we are suspending the retirement of the following exams: VCAP5 Design Exams: VMware Certified Advanced Professional 5 — Data Center Design (VCAP5-DCD) Exam #VDCD550 VCAP Lab Exams: VMware Certified Advanced Professional 5 — Data Center Administration (VCAP5-DCA) Exam #VDCA550 VMware Certified Implementation Expert — Network Virtualization (VCIX-NV) Exam […]
Unfortunately we have large number of virtual Microsoft failover cluster with RDM’s in virtual compatibility mode. Moving to SQL Always On is too expensive and our application owners refuse to acknowledge HA as an alternative. The issue with adding RDM’s is when you need to reboot an ESXi host it rescans for all these devices. As the amount of RDM’s increases this rescanning process can take up to an hr… Obviously waiting an hr is not acceptable so VMware created the following KB article to perennially reserve these devices. The issue I’ve experienced is when you have 100’s of RDM’s across 30-40 ESXi hosts, gathering all the devices using “esxcli storage core device list” and creating a script can be […]
So I had this wonderful error happen to me recently. I am in the process of migrating the Management IPs from one network to another on all the hosts in the environment. It is part of a bigger plan to migrate everything including the vCenter components to a new IP range ( I am not looking forward to that esp since this is a 5.1 environment!). I did that and updated DNS, flushed the DNS caches on my machine and on the PRTG probes etc. The host came back up fine, but when it rejoined vCenter it had this wonderful error message: Lost connectivity to the device mpx.vmhba32:C0:T0:L0 backing the boot filesystem /vmfs/devices/disk/mpx.vmhba32:C0:T0:L0. As a result, host configuration changes will […]
I noticed one of the hosts had a warning saying that: So basically I did what this KB article said: VMware KB article I had a look at another host, and had a look at the Advanced Settings value for: ScratchConfig.ConfiguredScratchLocation It showed a VMFS volumes /vmfs/volumes/UUID/Scratch folder for that host. So it showed me the UUID such as this: vmfs/volumes/51dda02d-fade5016-8a08-005056171889/HOSTNAME So it looked like there was a folder on this LUN every host! So since I am new to this environment I had to find a way to translate the UUID to the name of the actual SAN datastore being used. I did this by using the: esxcli storage filesystyem list | grep UUID This gave me the actual […]
I took VCAP5-DCD 5.5 and passed with a 334!!! I have to say both VCAP exams are the only 2 I have ever done where I have had no idea whether I was in with a shot of passing once I clicked the finish button! I want to thank everyone in the Google+ DCD group, as seriously without the group and the experiences of everyone in it, I don’t think I would have passed . It is a tough exam, I have found design a tough thing to do, there are so many what ifs and it depends. I have spent long periods of time very confused…but they say confusion comes before understanding… …..and that is true! My journey to the DCD […]
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