grelbar.net

stories from the trenches.. vmware, san, backups and general hacking

28 Oct
2020

DRS vCLS wtf?

vSphere 7 update 1 presents – the vCLS (vSphere Clustering Services) appliances which take care of, well, clustering services. They are now an integral bit of how DRS (and HA) works, if turned on. The catch seems to be disconnecting these functions from vCenter, where this functionality was previously integrated. As smarter people (namely Niels […]

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25 Oct
2020

VCSA 7 u1 update woes

“Don’t be hasty master Meriadoc” I was being hasty while updating my own lab vCenter Appliance to 7.0 U1a patch. I started the process from the VCSA gui as usual, but the download was interrupted at 3% (perhaps from a fault of my own), leaving the install in a messed up state. Refreshing the gui […]

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7 May
2020

VSS to DVS – a tale

Recently, me and a colleague were working on upgrading parts of a VMWare infrastructure from a mostly 1 Gbps network configuration to a mostly 10 Gbps network configuration as well as adding a 10G vMotion network. Cabling was already done at this point, but I’ll list the configuration below for posterity: 4 hosts Each host […]

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16 May
2018

Lenovo Thinkpad X270 – Dipping my toes in

The battery life of my previous work laptop, the T460s (first impressions -review here) had become abysmal after about two years of use. I tried to find a solution, but since the batteries are non-replaceable without surgical procedures, the only option would have been to get something like an external battery to keep using it. […]

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30 Mar
2018

Sierra Wireless EM7455 issues on Win 10 Fall 2017 and Workaround

As a somewhat ambivalent user of a Lenovo Thinkpad T460s laptop loaded with Windows 10 Enterprise and latest updates. After the Fall 2017 Creators update from Microsoft, the built in 4G Modem, a Sierra Wireless EM7455 stopped working. But not in an obvious way. You could still connect the 4G modem, and you’d have “bars” […]

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19 May
2017

Patching ScaleIO 2.0 VMware Hosts

Recently did an ESXi patch run, along with some BIOS and firmware updates on a ScaleIO 2.x environment (more precisely 2.0.5014.0). The environment consists of some Dell PowerEdge servers, some of which are ESXi 6.0 build 3380124, someĀ are Linux based, non-virtualized hosts. Luckily this environment was ScaleIO 2.x, because this version has a real maintenance […]

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25 Apr
2016

Lenovo Thinkpad T460s First Impressions

I recently switched laptops from the T440s to the T460s. I’ve long been a fan of the Thinkpads, both during the IBM period and the Lenovo reign of late. The T440s was a bit of a mistake in my opinion. Sure it performed as you’d expect, but the mouse was a huge pile of dung, […]

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