I remember a discussion on enabling this, a month or three ago.
(I. e. it comes enabled in write-through mode, and you have to send a
SCSI command to enable write-back.  This is to protect against power
failure and uncommitted data.  I have a UPS, so this is a non-issue.)

I couldn't find any resolution on this in my mail list archives.

If I remember right, there was a FreeBSD SCSI utility that could do it
very simply, on FreeBSD, but NetBSD didn't have support for that
particular utility.

Does anyone recall what the final solution was?  I just added a couple
Seagate drives to my system, and the write throughput is about a
quarter of my HP drives.  I'm suspicious that this is my problem.

Thanks for any pointers you can send my way...

-----------------------------------------------------------------------------
  Michael L. VanLoon                           michaelv@MindBender.serv.net
        --<  Free your mind and your machine -- NetBSD free un*x  >--
    NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3,
        Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32...
    NetBSD ports in progress: PICA, others...
-----------------------------------------------------------------------------