[mikepurvis]

How have they got 2k boot drives for 100k data drives? Are these special motherboards with 50 (!) SATA connectors on them? Or is it many machines netbooting and share-mounting root from a handful of control nodes? I get that it's backup, so most of the data is at rest most of the time, but that still seems like a really high ratio of network ports to disk drives.

Either way, interesting that the boot drives are actual drives and not SD card pairs or something, like how vSANs are often set up.

[nacs]

Yep, the latest pods have 60 drives:

https://www.backblaze.com/b2/storage-pod.html

[joering2]

Using 16TB drives you will get 9.6 Petabyes of storage per Pod 6.0. It would fit you circa 21,276 blu-ray rips.

[YUMad]

You mean Linux ISOs.

[jyxent]

The latest design has 3 4-port sata cards, with each port running to a 5-port backplane, which connect to the drives.