March 12, 20242 yr Hello Unraid community, This is my first time posting, so excuse me if I don't follow the rules or have posted in the wrong thread... I recently bought 2 WD 18TB Easystore drives. I shucked them and tested them out in an external HDD bay, and it worked as expected (covering the 3.3v pin with tape). Then I put them in my array, powered via a Molex to SATA connector. I precleared them. One of them precleared with no problems (preread, postread, zeroing). The other had a couple of failed attempts at preclearing but finally it zeroed. Anyways, I followed Unraid's guide for upgrading the parity (which was 16TB at the time) and so stopped the array --> unassigned parity ---> ran the Array ---> restarted the server ---> stopped the array ---> assigned new 18 TB parity --> started the array and BAM! After a couple of seconds of rebuilding, I get the following errors (please see below). The other 18TB HDD currently unassigned: This has occurred for both 18TB instances. I have checked all my connectors (even with a multimeter to ensure no 3.3v) and the connector and cables powering these drives have been interchanged and shown to power/supply HDDs in the past. My original 16TB parity is unplugged; the docked containers that would be writing to the drives have been stopped (e.g. sabNZB). Please let me know if I should take any other precaution while not having a parity drive installed. I have attached the diagnostics below. Thank you in advance. brooklyn-diagnostics-20240311-2315.zip
March 12, 20242 yr Community Expert Disk dropped offline and then reconnected again, this is usually a power/connection problem, swap cables with a different disk and try again.
March 16, 20242 yr Author Just an update.... On 3/12/2024 at 7:16 AM, JorgeB said: Disk dropped offline and then reconnected again, this is usually a power/connection problem, swap cables with a different disk and try again. Ive already done this and the probelm persisted. I suspected that there was too much power draw from my sata cables or something that would not supply enough power to my WD white drives so I decided to spin up another server with a different and more powerful PSU and those WD white drives now formatted and parity synced without an issue. Thank you for the help! Edited March 16, 20242 yr by afarhan3 typo
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