Re: [Amanda-users] Re: Tape DDS-3 values

On Sun, Sep 15, 2002 at 10:48:30AM -0400, Gene Heskett wrote:
> On Sunday 15 September 2002 08:41, Jason Thomas wrote:
> >00:09.0 SCSI storage controller: Adaptec AHA-2940U2/W
> 
> Ok, thats a wide (68 pin, not 80 pin, 80's are marked UW on the end 
> I think) controller.  Chances are pretty good the tape is a 50 pin 
> scsi-2 interface.  Assuming you are using some sort of an adaptor 
> to go from 68 to 50, and that this adaptor properly terminates the 
> upper 18 lines.  For the adaptor's terminations to function 
> properly, it must have term power available on pin 26 of the cable.  
> A minumum of 4.7 volts after the steering diode thats supposed to 
> be on the 2940.
> 
> How close am I with the guessing so far?

Okay here are the details.


Controller:
00:09.0 SCSI storage controller: Adaptec AHA-2940U2/W

The Tape Drive:
Its a HP dat40x6i Autoloader. C5713A and connects directly to the 68 pin
cable.

The hard drives are seagate barracuda's and as far as I know have no
built in termination.


root@bast:~# cat /proc/scsi/scsi 
Attached devices: 
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: SEAGATE  Model: ST39173LW        Rev: 6246
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 01 Lun: 00
  Vendor: SEAGATE  Model: ST39175LW        Rev: 0001
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 02 Lun: 00
  Vendor: SEAGATE  Model: ST39173LW        Rev: 6246
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 15 Lun: 00
  Vendor: HP       Model: C5713A           Rev: H910
  Type:   Sequential-Access                ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 15 Lun: 01
  Vendor: HP       Model: C5713A           Rev: H910
  Type:   Medium Changer                   ANSI SCSI revision: 02
root@bast:~# 


root@bast:~# cat /proc/scsi/aic7xxx/0 
Adaptec AIC7xxx driver version: 6.2.8
aic7890/91: Ultra2 Wide Channel A, SCSI Id=7, 32/253 SCBs

Serial EEPROM:
0x03bb 0x03bb 0x03bb 0x03bb 0x03bb 0x03bb 0x03bb 0x03bb 
0x03bb 0x03bb 0x03bb 0x03bb 0x03bb 0x03bb 0x03bb 0x03bd 
0x18a6 0x1c5d 0x2807 0x0010 0xffff 0xffff 0xffff 0xffff 
0xffff 0xffff 0xffff 0xffff 0xffff 0xffff 0xffff 0x98c1 

Channel A Target 0 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
        Goal: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
        Curr: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
        Channel A Target 0 Lun 0 Settings
                Commands Queued 5512809
                Commands Active 0
                Command Openings 49
                Max Tagged Openings 49
                Device Queue Frozen Count 0
Channel A Target 1 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
        Goal: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
        Curr: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
        Channel A Target 1 Lun 0 Settings
                Commands Queued 4637962
                Commands Active 0
                Command Openings 49
                Max Tagged Openings 49
                Device Queue Frozen Count 0
Channel A Target 2 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
        Goal: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
        Curr: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
        Channel A Target 2 Lun 0 Settings
                Commands Queued 3600319
                Commands Active 0
                Command Openings 49
                Max Tagged Openings 49
                Device Queue Frozen Count 0
Channel A Target 3 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 4 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 5 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 6 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 7 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 8 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 9 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 10 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 11 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 12 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 13 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 14 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 15 Negotiation Settings
        User: 40.000MB/s transfers (20.000MHz, offset 255, 16bit)
        Goal: 40.000MB/s transfers (20.000MHz, offset 32, 16bit)
        Curr: 40.000MB/s transfers (20.000MHz, offset 32, 16bit)
        Channel A Target 15 Lun 0 Settings
                Commands Queued 17906092
                Commands Active 0
                Command Openings 1
                Max Tagged Openings 0
                Device Queue Frozen Count 0
        Channel A Target 15 Lun 1 Settings
                Commands Queued 7174
                Commands Active 0
                Command Openings 1
                Max Tagged Openings 0
                Device Queue Frozen Count 0
root@bast:~#