September 26, 20241 yr My server load is 80W x 24 hours = 1.92kWh. I am using 4TB 4HDD. I am thinking about replacing 3HDD with 3SSD and leaving 1HDD as Parity disk. My questions are; 1 - Would this help to reduce load from 80W ? 2 - Are there any other concerns from the software aspect that i should be aware of ?
September 28, 20241 yr Author 9 hours ago, Veah said: No trim function for array drives. Trim function on SSD or HDD? Can you elaborate on your answer please?
September 28, 20241 yr Community Expert Trim is for SSDs. If they are in the array, trim wont work and the SDDs will start having problems. An alternative would be to get your SSDs and set them up in a pool. ZFS is a fairly new shiny in Unraid and should get you where you want to go. I believe if you are running the Unraid 7 beta that you don't even need any array drives.
October 1, 20241 yr Author Running stable version 6.12.13. ZFS is not going to solve my problem. One Active HDD typically consume 7W. ZFS pool require at least two SSD. Power draw of single Active SSD is 3W so 2 means 6W. I wouldn't be saving on power draw and will increase complexity of Unraid server. Thanks for the Trim link.
October 1, 20241 yr 4 SSD, RAIDZ1. Done. Incidentally, I also have systems running a single NVME formatted ZFS. Edited October 1, 20241 yr by Espressomatic
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