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Am Sat, Aug 20, 2022 at 05:45:18PM -0500 schrieb Dale: |
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> >> This new 10TB drive is maxing out at about 49.51MB/s or so. |
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For a new 3.5″ drive, I find this quite slow, even for the slowest part near |
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the centre of the spindle. I tend to use hdparm for a quick info, but that’s |
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been mentioned in another reply already. |
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> > I wonder if you are possibly running into performance issues related |
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> > to shingled drives. Their raw capacity comes at a performance penalty. |
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> |
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> This drive is not supposed to be SMR. […] If you have a better source of |
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> info, it's a WD model WD101EDBZ-11B1DA0 drive. |
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That’s a WD Red Plus. WD introduced the Plus series after the SMR debacle do |
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differentiate between the „now normal“ WD Reds which can (or maybe always) |
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have SMR and the Plus, which are always CMR. |
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> > Conceptually working in 512 B blocks on a drive that is natively 4 kB |
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> > sectors. Thus causing the drive to do lots of extra work to account |
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> > for the other seven 512 B blocks in a 4 kB sector. |
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> |
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> I think the 512 has something to do with key size or something. Am I |
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> wrong on that? If I need to use 256 or something, I can. My |
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> understanding was that 512 was stronger than 256 as far as the |
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> encryption goes. |
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Yeah, we are talking about two different kinds of blocks. You have the disk |
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block size, the encryption block size and the file system block size. (I |
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call them all block size here, but they may have more appropriate names). |
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I think the most important thing is to have the FS block size match the |
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drive, because in the end, the FS is what sends writes out. The encryption |
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layer is transparent underneath, it simply transforms the bit values, but |
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not their location. Disclaimer: that is pure speculation on my part based on |
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common sense. |
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-- |
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Grüße | Greetings | Salut | Qapla’ |
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Please do not share anything from, with or about me on any social network. |
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“A Melmacian almost never goes back on his word sometimes.” – Alf |