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Hello, |
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|
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On Fri, 22 May 2020, antlists wrote: |
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>On 22/05/2020 19:23, Rich Freeman wrote: |
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>> A big problem with drive-managed SMR is that it basically has to |
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>> assume the OS is dumb, which means most writes are in-place with no |
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>> trims, assuming the drive even supports trim. |
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> |
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>I think the problem with the current WD Reds is, in part, that the ATA-4 spec |
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>is required to support trim, but the ATA-3 spec is the current version. |
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>Whoops ... |
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ATA-8 is the current spec. Though practically unused. The used spec is |
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ATA-7 in virtually all drives for IIRC the last 10ish years or so. |
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|
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Did you mean SATA specs? Well, then there's only SATA-1 (1.5GBit/s), |
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SATA-2, (3.0GBit/s) and SATA-3 (6.0GBit/s), and of the latter SATA |
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revision 3.1 introduced TRIM[2]. Oh, and rev. 3.3 introduced some |
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extras for SMR [3]. |
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HTH, |
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-dnh |
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|
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[1] https://en.wikipedia.org/wiki/Parallel_ATA |
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[2] https://en.wikipedia.org/wiki/Serial_ATA#SATA_revision_3.0_(6_Gbit/s,_600_MB/s,_Serial_ATA-600) |
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[3] https://en.wikipedia.org/wiki/Serial_ATA#SATA_revision_3.3 |
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-- |
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The nice thing about Windows is - It does not just crash, it displays a |
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dialog box and lets you press 'OK' first. (Arno Schaefer's .sig) |
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