On 26 May 2016 at 14:41, Kenneth D. Merry <k...@freebsd.org> wrote:
> On Thu, May 26, 2016 at 15:29:21 +0200, Gary Jennejohn wrote:
> > On Thu, 26 May 2016 08:34:45 -0400
> > "Kenneth D. Merry" <k...@freebsd.org> wrote:
> > > On Thu, May 26, 2016 at 08:42:53 +0200, Gary Jennejohn wrote:
> > > What kind of drive is it?
> > >
> > ST8000AS 0002-1NA17Z 0X03
> Yes. There is something slightly odd about the Inquiry data you pasted
> above. Seagate didn't set the bits in the ATA identify data to mark it as
> a Drive Managed drive, so I put in a quirk entry to mark it as Drive
> Unfortunately with Drive Managed drives that is really all you know. You
> don't know the zone boundaries or states. But, it is useful to know that
> you really should write sequentially for good performance. (True of any
> drive, but especially true with SMR drives.)
The drive is supposed to have Word 69 set to 0x0001 and support ZAC MGMT
at pg. 24 and 28.
Incidentally AR17 firmware is a new batch, perhaps Seagate did what they
did with -DL003 drives where the early models reported 512n sector size (so
as not to confuse computers) and the later models properly reported 4kn
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