SSD

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 [...]

VSAN Design & Sizing – Memory overhead considerations

This week I was in Berlin for our annual Tech Summit in EMEA. This is an event for our field folks in EMEA. I presented a number of VSAN sessions, including a [...]

Read locality in VSAN stretched cluster

Many regular readers will know that we do not do read locality in Virtual SAN. For VSAN, it has always been a trade-off of networking vs. storage latency. Let [...]