Category Archives: VMware

3PAR iSCSI Delayed ACK read or write performance issues

I’ve noticed a few people running iSCSI 3PARs with Delayed ACK enabled and experiencing latency on their datastores. Here’s what happens when you disable it (SSD backed datastore): Before and after: VMware KB about it: https://kb.vmware.com/kb/1002598 I suggest to use … Continue reading

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vCenter Server Appliance 6.0 bug – Intermediate authentication issues – Native platform error -1765328378

Another mysterious bug from VMware – intermediate authentication failures. Symptoms: I’ve noticed some of the backup jobs were failing because Veeam failed to log in to vCenter. If you’re familiar with Veeam software – you define backup account per vCenter … Continue reading

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ESXi 5.5/6.x bug HPE CIM – /var/run/sfcb inode table of its ramdisk is full

Another bug from VMware/HPE – unfortunately we don’t have public KB available at this point. As per our conversation with VMware engineer this issue affects both ESXi 5.5 and ESXi 6.x hosts. I suspect VMware sfcb service fails to clear … Continue reading

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Alert! Alerte! Achtung! Critical bug in vSphere 6

Backing up VMs in vSphere 6 can cause data loss in your backups! Earlier I wrote about critical bug with vSphere 5.5 update 3 related to backups which was absolutely unacceptable and here we go again… Here’s symptoms from VMware’s … Continue reading

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VMware Site Recovery Manager 5.8 command on SRM with Powershell bug

Hello, we have another VMware Site Recovery Manager (SRM) bug. This time it’s with Command on SRM server and Powershell scripts. I am not SRM developer but it seems SRM itself parses commands before passing it to Windows OS for … Continue reading

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VMware Site Recovery Manager 5.8 Bug – Linked Mode

There is a “well known” bug in VMware Site Recovery Manager 5.8 (SRM), which puts your DR plan at risk. It will only affect if you have vCenters connected in Linked mode. Well, let me put it this way: when … Continue reading

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VMware Site Recovery Manager remote Powershell script

You have a PowerShell script designed to run locally, but you need to execute it on remote computer via another product such as VMware Site Recovery Manager . You need to keep all your scripts in central repository but you … Continue reading

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vSphere 5.5 upcoming features

Just came across this post on one of the forums about new features coming to vSphere 5.5. It is not an official release but more of a highlights by someone participating in beta testing. I’ve just formated this info:

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