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 >
[snip] > 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 > Managed. > > 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 IN/OUT - http://www.seagate.com/www-content/product-content/hdd-fam/seagate-archive-hdd/en-us/docs/100795782a.pdf 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 sector size? -- Igor M. _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
