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Wednesday, February 07, 2018

Storage QoS with vSphere virtual disk IOPS limits

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I'm a long time protagonist of storage QoS applied per each VM virtual disk (aka vDisk). In the past, vSphere virtual disk shares and I...
3 comments:
Sunday, January 28, 2018

ESXi - optical diagnostic information from VMNIC

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I have been asked by one customer how to get optical diagnostic information from NIC which is Intel X540 10GbE Controller. NIC was identifi...
Wednesday, January 24, 2018

vSphere 6.5 - DRS CPU Over-Commitment

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A lot of VMware vSphere architects and engineers are designing their vSphere clusters for some overbooking ratios to define some level of t...
2 comments:
Friday, January 12, 2018

VMware Response to Speculative Execution security issues, CVE-2017-5753, CVE-2017-5715, CVE-2017-5754 (aka Spectre and Meltdown)

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Since January 3, 2017, the whole IT industry is mitigating the impact of  SPECTRE and MELTDOWN vulnerabilities and administrators are upd...
2 comments:
Tuesday, January 09, 2018

Admission Control "Dedicated fail-over hosts"

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More then three years ago I published the blog post about " vSphere HA Cluster Redundancy ". There are three algorithms Define ...
Thursday, December 21, 2017

SDRS Initial Placement - interim storage lease between recommendation and provisioning

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Every day we learn something new. In the past, I blogged about SDRS behavior on these blog posts Storage DRS Design Considerations VMwa...
Tuesday, December 19, 2017

What ESXi command will create kernel panic and result in a PSOD?

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This is a very short post but I want to publish it at least for myself to find this trick much quickly next time. Sometimes, especially d...
Sunday, December 17, 2017

No Storage, No vSphere, No Datacenter

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In the past, I have had a lot of discussions with different customers and partners about various storage issues with VMware vSphere. It was...