I’m solo mining forging between 1 and 3 blocks every 24 hours. I had the equipment already and 60 2TB hard drives (old Hitachi 7200 RPM drives) and it was a backup system for my media server (the 5th chassis in the rack). So I would only power it on once a month to do a sync against the media server. Then I caught the mining bug and started mining on a 1070 and a pair of 980Ti’s. I then discovered Burst and decided to re-purpose my backup server it. I have a friend with a similar setup doing the same. We each have a mirror of each other’s media, so having a local backup as well wasn’t really necessary.
I upgraded my main media server from 12 x 6TB + 12 x 4TB drives to 24 x 6TB drives (2 x 12 in RAID 60) and then added to 12 x 4TB drives to the Burst server. Then BestBuy started having the 8TB Easy Store externals on sale for $179.99 and $159.99, so I started to snatch those up and shuck the drives from them. I have gotten pretty good and can shuck a drive in about 60 seconds now, without breaking any tabs. lol
On the GPU mining front I quickly found that the 980Ti’s are not the cards to use for mining, so I sold those and picked up a Zotac 1080Ti. Running it at 70% power and OC both core and memory, it did better than the 2 980Ti’s combined and used way less power to boot. Then the bug really set in and I build a dedicated mining rig with 6 EVGA 1080Ti cards on a MSI Z270-A PRO motherboard, complete with 6 1x PCIe risers.
Along the way I added a 100A sub-panel in my “server room” and switched to 240V UPSs for the Burst and Media servers. The GPU miner is also feed 240V directly from the sub-panel (don’t care if there is a power interruption since nothing is written to hard drives).
All this stuff is in my basement but now that I’m generating over 3,000 watt worth of heat, I added a 750 CFM exhaust fan to extract the hot air from the server room:
However, that turned out to be a disaster for the rest of the house and I now had negative pressure everywhere and hot humid air was being pulled into the house from all cracks in doors, windows and walls, so my main HVAC unit had to work overtime and was not able to maintain 74 degrees inside and it was 90 plus outside.
So I removed the exhaust fan and temporarily got a portable 12,000 BTU A/C unit:
That sucker is drawing over 1,400W and runs constantly, so I have ordered a 24,000 BUT 22 SEER inverter based mini split, which I hope will resolve the issue once and for all and have excess capacity for future expansion.
My power is pretty cheap ($0.08 per kWh) AND I have a 20,000 kWh solar system with a net metering arrangement with my POCO, so my effective cost is only about $0.02 kWh, depending on consumption. I was actually producing more that I consumed before I stared mining, so I have a “bank” of kWh with the POCO. So I keep telling myself (and the wife) that justifies all this. lol
Mining is a disease worse than drug addition I’m telling you!