****I asked this question in Windows Tech Net, but got no response. I am not an IT Pro, so maybe I posted in the wrong forum. This issue seems to be happening to others and the Windows Key + X.... solution I saw elsewhere on this forum did not work for me. Here is my question....*****
I have 16 USB drives pooled in Windows 10 Storage Spaces (mostly 3TB to 5TB drives). Most of the pool is used as parity storage volume. I also have small 2 and 3 way volumes and a simple volume with little data on them. The pool was at about 68% capacity before a 5TB drive failed. Storage Spaces automatically moved data off the failed drive and currently reports: 0.42% used, providing 4.54TB pool capacity. Error code for the failed drive in Physical Drives listing reads: Retired; add a drive then remove this drive.
The Parity Storage Spaces volume now reads: Warning, Low capacity: add 2 drives. Because when data was reallocated to the remaining drives, the parity volume is now over 70% full.
What I have done.
1. I bought a new 5TB USB drive and added it to the storage pool. Attempted to "remove" the failed drive in the GUI Physcial drives listing. Got an error with detail: "Drive could not be removed because not all data could be reallocated. Add an additional drive to this pool and reattempt this operation." I don't understand how adding a new 5TB drive to the pool was not large enough to reallocate the remaining 0.42% data used on the failed drive. Thought maybe the 70% low capacity error message had something to do with it. So....
2. I then added two smaller USB drives (200GB, 500GB) to the pool and the "low capacity" and "add 2 drives" messages were cleared. I attempted to once again remove the retired drive in the Storage Spaces GUI, but got the same message as before that the pool was not large enough to reallocate the remaining data on the failed drive.
After googling this issue of how to remove Storage Spaces retired drives, I believe I am not the only one with these concerns and I have yet to find an answer. I have effectively replaced one failed 5TB drive with three drives providing almost 6TB and yet Storage Spaces will not let me remove the failed 5TB drive.
The failed drive is only about 4 months old, so I would like to remove it from Storage Spaces, run diagnostics on it, and RMA it for a replacement. However, don't want to "crash" the Storage Spaces by just unplugging the failed drive and physically removing it on my own when the GUI says I can't.
Storage Spaces is still running fine despite the one failed drive, so no complaints. Just want to know how to get this retired drive off my pool. Have started learning how to use Powershell, so willing to go beyond the Windows 10 Storage Spaces GUI if needed. Any help appreciated.