On Sat, 23 May 2020 11:39:40 -0400,
David Haller wrote:
>
> Hello,
>
> On Sat, 23 May 2020, Michael wrote:
> >On Saturday, 23 May 2020 00:31:48 BST Rich Freeman wrote:
> >> On Fri, May 22, 2020 at 5:40 PM antlists <antli...@youngman.org.uk> wrote:
> >> > On 22/05/2020 19:23, Rich Freeman wrote:
> >> > > A big problem with drive-managed SMR is that it basically has to
> >> > > assume the OS is dumb, which means most writes are in-place with no
> >> > > trims, assuming the drive even supports trim.
> >> >
> >> > I think the problem with the current WD Reds is, in part, that the ATA-4
> >> > spec is required to support trim, but the ATA-3 spec is the current
> >> > version. Whoops ...
> >>
> >> Probably was thought up by the same genius who added the 3.3V reset
> >> pin to the SATA standard.
> >
> >Is there a way to determine if a drive on sale is SMR *before*
> >purchase?
>
> WD Red WD*EFRX are PMR.
> WD Red WD*EFAX are SMR (AFAIK, could be, that some are PMR).
>
> ISTR, that the "Red Pro" are all PMR (so far).
How about WD4001FFSX-68JNUN0? I hope its pmr.
--
Your life is like a penny. You're going to lose it. The question is:
How do
you spend it?
John Covici wb2una
cov...@ccs.covici.com
