DIY Ambilight – part 3

Finally the new LED strip arrived so now I had al the pieces to connect everything together.

I started by cutting the LED strip to the desired length. I had a total of 96 LEDs so I cut it in pieces of 8, 21, 38, 21, and 8 LEDs. In Hyperion it looked like this:

The next step was to put the strips on the back of the TV and solder them together again. Note: check for the arrow on every section so it points in the same direction. It doesn’t matter if its clockwise or counter clockwise because you can change this in Hyperion.

Now connect all the other pieces. Is used a 4-port USB hub to power the PI and the HDMI splitter and converter. The hub is connected to a USB port of the TV.

Unfortunately the video grabber I used didn’t work. When I tried to take a grabber screenshot I got an error: VIDIOC_S_STD ERROR 25, Inappropriate ioctl for device. Hmm…

A quick search learned my that the chipset of the grabber wasn’t supported. So I ordered another grabber based on a link I found. Different chipset but the same error. This time I got a version 2 grabber and in the link they used a version 1 grabber… So I ordered a third grabber. So now I’m waiting for that to arrive… TBC


Allign SDRS Thresholds and Datastore Usage on Disk Alarms

Last week I was monitoring a relatively large vSphere cluster with several host clusters and datastore clusters. I saw a couple of datastore warnings related to the datastore usage. There were two or three datastores that were more than 75% utilized.

Strange, because other datastores in the same datastore cluster had more than plenty of free space. So why didn’t SDRS kick in to distribute the files more evenly?

The reason for this is that the default warning threshold for the alarm is 75%. However, the default space utilization ratio threshold for SDRS is 80%.

So SDRS only kicks in when the utilization is more than 80%. But by then, the alarm for the datastore usage is already triggered.

My solution for this ‘problem’ was to align both thresholds at 75%. If for some reason SDRS cannot move files to another datastore and it gets even fuller there is still the alarm alert that is set at 85%.