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21 articles
Every vSphere known issue in VMware Cloud Foundation 9.1 - Memory Tiering power-on failures, the swap.c:1201 PSOD, ConnectX-7 LAG traffic loss, NFS4ERR_CLID_INUSE and the NetFlow upgrade pre-check - with the exact errors and workarounds.
12 Sep 202612 min
Every vSphere bug fixed in VMware Cloud Foundation 9.1 - the bnxtroce unicast drop, ScanTask remediation timeouts, the SPS OutOfMemoryError and the vLCM depot metadata bug - with the exact errors and root causes.
12 Sep 202610 min
Broadcom documents the bugs that took down somebody's cluster. Five real issues from the latest ESXi release notes - the exact error, the root cause and the fix, with the war stories behind them.
12 Sep 202612 min
Install Failed on one host or the whole cluster tells you different things. Read esxupdate.log, clear the real blocker and recover a half-installed transport node without a rebuild.
12 Sep 20268 min
BGP stuck in Active, or Established with no prefixes? Two very different problems. A structured walk from Tier-1 advertisement through Tier-0 redistribution to the physical router.
12 Sep 20268 min
A degraded NSX Manager cluster leaves the data plane running but configuration at risk. Work through cluster status, disk, time, certificates and a clean node rejoin.
12 Sep 20268 min
A DFW rule that looks correct in the UI but does not match in the data path. Use vsipioctl, Traceflow and filter captures to find the rule that really handled the packet.
12 Sep 20269 min
Overlay traffic between hosts stops but NSX looks green. Here is how to read tunnel state, prove TEP reachability at 1600 bytes and find the MTU or BFD fault behind it.
12 Sep 202610 min
APD, PDL and plain latency produce similar symptoms and need completely different responses. Here is how to classify the condition from the logs and recover correctly.
11 Sep 20268 min
Consolidation warnings, locked delta disks and orphaned VMDK chains all come from the same mechanics. Learn the disk chain, the safe recovery order, and the alarms that stop it happening again.
11 Sep 20267 min
Most 'HA agent unreachable' errors are DNS, firewall or management-network faults rather than HA itself. This fault tree takes you to the root cause in seven checks.
10 Sep 20268 min
The appliance pings and accepts SSH, but the vSphere Client returns 503. Work through disk space, certificates, time skew, directory service and database in the right order.
9 Sep 20267 min
A purple diagnostic screen is the VMkernel telling you it hit an unrecoverable condition. Here is how to read the panic banner, extract the core dump, and identify the faulting driver or hardware component.
8 Sep 20267 min
Fibre Channel over Ethernet (FCoE) is an industry-standard protocol used to consolidate data traffic in storage and networking environments. It provides a high-speed, low-latency way to transport data between servers and storage devices, while eliminating the need for separate networks dedicated to each type of traffic. In this article, we will discuss how VMware vSphere […]
10 Dec 20223 min
The version of VMware vSphere 7 has been out for some time now, but it hasn’t been without its share of bugs. While many of these issues have already been resolved, there are still a few that remain and often re-appear in later releases. In this blog post, we’ll take a closer look at the […]
27 Nov 20225 min
VMware has announced that VMware vSphere 7 will no longer support several VMware features, add-ons, and plugins. The deprecation of these features may come as a disappointment to some users; however, it is important to remember that VMware is constantly innovating and introducing new features to its product line. As such, the decision to deprecated […]
7 Oct 20225 min
If you have recently upgraded your VMware ESXi system, you may be experiencing problems with VMNICs (virtual machine network interface cards) not working. This issue can occur when the new version of the hypervisor is incompatible with the existing hardware. Fortunately, there are ways to troubleshoot these issues and get your VMNICs up and running […]
27 May 20223 min
I recently encountered a warning prompt which said “Deprecated VMFS Volumes found on host” in VMware vSphere 6 ESXi installation. This error cropped up after I added a new shared LUN or datastore. Originally it just had a boot lun from the SAN and then now a new shared VMFS volume. So I was baffled […]
25 Jan 20162 min
You probably either just upgraded your ESXi or installed it fresh and now you are seeing a quick stats not up-to-date warning message within VMware vCenter 5.5 or 6.0 version. Quick Stats is not up-to-date I was doing a new deployment where this error only appeared after a shared VPLEX datastore was presented to the […]
25 Jan 20163 min
VMware Storage vMotion fails with the method is disabled by VM-ID. In vSphere Client, you see the errors: The method is disabled by ‘_DP-VEPA_BACKUP_RESTORE_LOCK_’ Error Stack Call “VirtualMachine.Relocate” for object “VM-NAME” on vCenter Server “vCenter-Name” failed The method is disabled by ‘SYMC-INCR dd-mm-yyyy hh:mm’ Error Stack Call “VirtualMachine.Relocate” for object “VM-NAME” on vCenter Server “vCenter-Name” […]
30 Apr 20142 min
VMware VMRC Web client connection time out for VM console After the installation of VMware 5.5 we tried to use the web client to access the console of one of the VM. The plugin kept on saying connection timeout. However, if we RDP to the vCenter server and launch it locally it worked fine. So […]
30 Apr 20141 min
