HyperFlex VM with Native VMware Snapshots VM not responding issue

I recently encountered an issue performing a snapshot-based VM backup using Avamar with the nested vCenter VM inside a HyperFlex cluster. This issue occurs when using native VMware snapshot backups and NFSv3 datastores. The issue is more prevalent with nested vCenter on HyperFlex with VMware as HyperFlex presents the storage as NFSv3 datastores to the […]

HyperFlex 3.0 Nested vCenter Bug with error “something went wrong in executing scripts”

I was recently installing a brand new HyperFlex cluster at a remote site. The plan was to use a nested vCenter as there were no other infrastructure available and being a remote site, the connection back to the head office would be too unstable to put the vCenter at the head office. As with all […]

Cisco HyperFlex and Nexus 3548 ping / ARP drop Layer-2 connectivity issue

I recently deployed a Cisco HyperFlex system with some old Cisco Catalyst 2960s switches. I now have this shiny new piece of tin which does 10Gb connectivity but the upstream switches were limiting it to 1Gb. It is also recommended to have jumbo frames enabled but the Catalyst switches required a reload to enable jumbo […]

VMware VCSA 6.5 Permissions and Active Directory Groups Not Working

I recently deployed VCSA 6.5U2 with embedded PSC and selected Active Directory (Windows Integrated Authentication) as the identity source. All the required steps were carried out, joining the VCSA to Active Directory, rebooting the VCSA then adding the AD identity source with using the machine SPN. I could successfully query and add users and group […]

CWOM Azure Pricing Issue – Upgrade required

I ran the CWOM “migrate to public cloud” plan yesterday, selected Azure and found that all the costs were $0. After a quick email to my contact at Turbonomic, we were informed that Azure had recently changed their APIs which caused CWOM v1.2.2 and below’s Azure API calls to fail. The fix is to upgrade […]

Cisco Workload Optimization Manager (CWOM) Review

Cisco Workload Optimization Manager or CWOM was one of the highlights during the Cisco Live! Melbourne 2018 conference. I got my hands on a trial version for review. CWOM is basically a re-badged version of Turbonomic with a few add-ins such as Cisco UCS templates used for server migration planning. Details regarding Cisco’s partnership with […]

VMware Spectre Variant 2 CVE-2017-5715 with cpu microcode fix released!!

I noticed that my ESXi hosts had new patches today and apparently VMware has finally released the patch for Spectre Variant 2 CVE-2017-5715 version 2 which utilizes the new updated CPU microcode patch listed in VMware Security Advisory vmsa-2018-0004.3. A colleague of mine illustrated the requirements similar to the one below which I found interesting and easy […]

VSAN Deduplication – what they don’t tell you

I was asked about deduplication ratios for VDI today which brought back some memories from when I deployed a VSAN cluster a few months ago. It was a VSAN all-flash cluster (mentioned in my previous blog post) which I enabled deduplication and compression. I used Zerto to migrate some VMs for testing and found that […]

Cisco Live! Melbourne 2018 Key Takeaways

I attended the Cisco Live! Melbourne 2018 conference last week. Great to be back for my 6th consecutive Cisco Live! and this year there were close to 7000 attendees!! The key highlight for me was definitely the Data Centre Innovation Day (thanks to my Cisco Accounts team for getting me the exclusive invite) and “Meet […]

Zerto issue with VMware VSAN – Zerto-migrated VMs unable to perform snapshot or clone

I recently used Zerto migrate VMs from an old vSphere 5.0 cluster into a new VSAN 6.6 cluster. The VMs started up fine but I found that I could not perform any disk related functions such as snapshots or clones to the migrated VMs. All VMs that were manually created on the VSAN 6.6 cluster […]