January 1, 20224 yr Hi all, I just bought 3 WD Red drives (WD40EFAX) and when I started the array they all started clearing at 8mb/sec, I stopped the array and removed 2 of them to see if just having one would go at 24mb/sec but it's currently clearing at 9mb/sec. This is the first time I'm adding new drives to the array with a valid parity so first time clearing but building the parity for the entire array (to a 10TB SMR drive) only took 3 days where as just clearing one of these 4TB drives is quoting 5 days. I I've attached my diagnostics file if anyone is willing to take a look and give me any suggestions to look at to find out why performance is so poor? Thanks! databank-diagnostics-20220101-0917.zip
January 2, 20224 yr Community Expert Those are SMR, they can be much slower than CMR drives (WD RED plus). to a 10TB SMR drive) Not aware of any 10TB SMR drive.
January 4, 20224 yr Author Thanks and yeah I was wrong on the 10TB being an SMR after looking closer -- I guess 9MB/sec will just have to do
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