Hmm. Very interesting. Thanks.

The drives that are failing for me negotiate at an intermediate rate between 5
&& 10MB/s:

sd0 at scsibus0 target 0 lun 0: <SEAGATE, ST31200N SUN1.05, 9424> SCSI2 0/dire
ct fixed
sd0: 1006 MB, 2700 cyl, 9 head, 84 sec, 512 bytes/sect x 2061108 sectors
sd0: sync (124.0ns offset 15), 8-bit (8.064MB/s) transfers, tagged queueing
sd1 at scsibus0 target 1 lun 0: <SEAGATE, ST1480   SUN0424, 7516> SCSI2 0/dire
ct fixed
sd1: 411 MB, 1476 cyl, 9 head, 63 sec, 512 bytes/sect x 843284 sectors
sd1: sync (200.0ns offset 15), 8-bit (5.000MB/s) transfers
sd2 at scsibus0 target 3 lun 0: <MICROP, 2217-15MQ1091501, 4930> SCSI2 0/direc
t fixed
sd2: 1683 MB, 2372 cyl, 15 head, 96 sec, 512 bytes/sect x 3447008 sectors
sd2: sync (124.0ns offset 15), 8-bit (8.064MB/s) transfers, tagged queueing


I'll try and dial it back a bit and see if that's the issue.

On Wed, 5 Jun 2002, Jim Bernard wrote:

> On Wed, Jun 05, 2002 at 12:32:49PM -0700, Matthew Jacob wrote:
> > 
> > Huh. Darnedest thing then. Can you let me also know what targets and how they
> > negotiated?
> 
> I suppose it shouldn't make any difference, but this kernel was built on
> an i386 box of the same OS vintage.  Anyway, here's the dmesg:
> 
> mainbus0 (root): SUNW,SPARCstation-20
> cpu0 at mainbus0: TMS390Z50 v0 or TMS390Z55 @ 50 MHz, on-chip FPU
> cpu0: physical 20K instruction (64 b/l), 16K data (32 b/l): cache enabled
> cpu at mainbus0 not configured
> ...
> esp0 at dma0 slot 15 offset 0x800000 level 4: ESP200, 40MHz, SCSI ID 7
> scsibus0 at esp0: 8 targets, 8 luns per target
> ...
> sd0 at scsibus0 target 0 lun 0: <SEAGATE, ST34555N, 0930> SCSI2 0/direct fixed
> sd0: 4340 MB, 6300 cyl, 8 head, 176 sec, 512 bytes/sect x 8888924 sectors
> sd0: sync (100.0ns offset 15), 8-bit (10.000MB/s) transfers, tagged queueing
> sd1 at scsibus0 target 1 lun 0: <SEAGATE, ST42400N, 0119> SCSI2 0/direct fixed
> sd1: 2030 MB, 2626 cyl, 19 head, 83 sec, 512 bytes/sect x 4159462 sectors
> sd1: sync (100.0ns offset 15), 8-bit (10.000MB/s) transfers, tagged queueing
> sd2 at scsibus0 target 2 lun 0: <SEAGATE, ST42400N, 0119> SCSI2 0/direct fixed
> sd2: 2030 MB, 2626 cyl, 19 head, 83 sec, 512 bytes/sect x 4159462 sectors
> sd2: sync (100.0ns offset 15), 8-bit (10.000MB/s) transfers, tagged queueing
> sd3 at scsibus0 target 3 lun 0: <SEAGATE, ST31200W SUN1.05, 8566> SCSI2 0/direct fixed
> sd3: 1006 MB, 2700 cyl, 9 head, 84 sec, 512 bytes/sect x 2061108 sectors
> sd3: sync (100.0ns offset 15), 8-bit (10.000MB/s) transfers, tagged queueing
> st0 at scsibus0 target 4 lun 0: <ARCHIVE, VIPER 1500 21247, 2.2G> SCSI2 1/sequential removable
> st0: drive empty
> st0: async, 8-bit transfers
> st1 at scsibus0 target 5 lun 0: <ARCHIVE, 4586XX 28887-XXX, 0420> SCSI2 1/sequential removable
> st1: drive empty
> ch0 at scsibus0 target 5 lun 1: <ARCHIVE, 4586XX 28887-XXX, 0420> SCSI2 8/changer removable
> ch0: 4 slots, 1 drive, 1 picker, 0 portals
> st1: sync (200.0ns offset 15), 8-bit (5.000MB/s) transfers
> ch0: sync (200.0ns offset 15), 8-bit (5.000MB/s) transfers
> 
> --Jim
>