March 21, 20251 yr Author 1 minute ago, trurl said: If you mean Molex to 4 SATA, yes, I do. I did, thank you. I am going to use (3) of these cables to power (12) drives and then (3) 1x2 SATA splitters to power the other (6) drives. Will report back. Then, hopefully, build parity for the first time. Thank you!
March 21, 20251 yr Community Expert You mention having 18 drives - I am not sure a 600W PSU is powerfully enough to handle that many drives running simultaneously? If that is the case then that could explain many of your symptoms as insufficient power can lead to random drives dropping out depending on the data access pattern. Perhaps more detail on your total hardware might allow for a better view of whether this is likely to be an issue.
March 21, 20251 yr Author 27 minutes ago, itimpi said: You mention having 18 drives - I am not sure a 600W PSU is powerfully enough to handle that many drives running simultaneously? If that is the case then that could explain many of your symptoms as insufficient power can lead to random drives dropping out depending on the data access pattern. Perhaps more detail on your total hardware might allow for a better view of whether this is likely to be an issue. Thank you! I've thought about this too and beleive at some point on this forum or unRAID Reddit, that kind folks helped me calculate my load and it was suffiient. But, I am open to revisit if you are willing to lend your thoughts. I have (18) HDDs, (2) 1TB NVMEs, the USB OS in a Define 7XL case. Also, (4) sticks of RAM (32GB DDR5 total) and (2) sata controller cards in Pci slots. I do not have a graphics card. This server is a simple Plex server and serves no other purpose. I believe I used an online calculator at one point too, and was OK, but again would welcome feedback. Thx MB is Gigabyte Technology Co., Ltd. B760M C CPU is 13th Gen Intel® Core™ i5-13500 @ 2475 MHz Edited March 21, 20251 yr by wdpaynter
March 31, 20251 yr Author On 3/21/2025 at 12:30 PM, trurl said: Anything can be bad if it is bad. But good Molex is better than good SATA splitters because it is a tighter connection, can carry more current, and can even avoid the "3.3V" problem because it has none. I wanted to thank you again for identifying my cabling issues. I ordered the cables you suggested and have 3 days uptime since installing. Prior to this I would "lose" a random drive to read errors every 8-12 hours and only stopping and starting the array would bring everything back to normal. I now have (3) 1x4 molex to sata splitters to power (12) drives and (3) 1x2 sata to sata splitters to power (6) drives. I will continue to monitor and once comfortable, build my first parity. The help on this forum is appreciated!
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