SSD

Degraded Device Handling (DDH) Revisited

Degraded Device Handling (DDH) or Dying Disk Handling as it was formerly known, is a feature that has been available in vSAN for some time. However, I [...]

Debunking some behavior “myths” in 3 node vSAN cluster

I recently noticed a blog post describing some very strange behaviors in 2-node and 3-node vSAN clusters. I was especially concerned to read that when they [...]

Component Metadata Health – Locating Problematic Disk

I've noticed a couple of customers experiencing a Component Metadata Health failure on the VSAN health check recently. This is typically what it looks [...]

Essential Virtual SAN (6.2) available for pre-order

Our friends over at Pearson and VMware Press have informed us that the second edition of the Essential Virtual SAN book (that I wrote with Duncan Epping) is [...]

VSAN 6.2 Part 10 – Problematic Disk Handling

In this post, I want to talk about a feature called Problematic Disk Handling. Some history behind why we have such a feature can be found in this post. In [...]

Datrium go GA

This week Datrium announced that their DVX system is now generally available. I met these guys at VMworld 2015, and wrote a closer look at Datrium here. If you [...]

VSAN.ClomMaxComponentSizeGB explained

In the VSAN Troubleshooting Reference Manual, the following description of VSAN.ClomMaxComponentSizeGB is provided: By default VSAN.ClomMaxComponentSizeGB is [...]