Gentoo Archives: gentoo-user

From: John Covici <covici@××××××××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Seagate ST8000NM0065 PMR or SMR plus NAS SAS SATA question
Date: Sat, 23 May 2020 21:35:24
Message-Id: m3zh9ys5bh.wl-covici@ccs.covici.com
In Reply to: Re: [gentoo-user] Seagate ST8000NM0065 PMR or SMR plus NAS SAS SATA question by David Haller
1 On Sat, 23 May 2020 11:39:40 -0400,
2 David Haller wrote:
3 >
4 > Hello,
5 >
6 > On Sat, 23 May 2020, Michael wrote:
7 > >On Saturday, 23 May 2020 00:31:48 BST Rich Freeman wrote:
8 > >> On Fri, May 22, 2020 at 5:40 PM antlists <antlists@××××××××××××.uk> wrote:
9 > >> > On 22/05/2020 19:23, Rich Freeman wrote:
10 > >> > > A big problem with drive-managed SMR is that it basically has to
11 > >> > > assume the OS is dumb, which means most writes are in-place with no
12 > >> > > trims, assuming the drive even supports trim.
13 > >> >
14 > >> > I think the problem with the current WD Reds is, in part, that the ATA-4
15 > >> > spec is required to support trim, but the ATA-3 spec is the current
16 > >> > version. Whoops ...
17 > >>
18 > >> Probably was thought up by the same genius who added the 3.3V reset
19 > >> pin to the SATA standard.
20 > >
21 > >Is there a way to determine if a drive on sale is SMR *before*
22 > >purchase?
23 >
24 > WD Red WD*EFRX are PMR.
25 > WD Red WD*EFAX are SMR (AFAIK, could be, that some are PMR).
26 >
27 > ISTR, that the "Red Pro" are all PMR (so far).
28
29 How about WD4001FFSX-68JNUN0? I hope its pmr.
30
31 --
32 Your life is like a penny. You're going to lose it. The question is:
33 How do
34 you spend it?
35
36 John Covici wb2una
37 covici@××××××××××.com

Replies

Subject Author
Re: [gentoo-user] Seagate ST8000NM0065 PMR or SMR plus NAS SAS SATA question David Haller <gentoo@×××××××.de>