External SCSI Drives on DEC2000 AXP

[Jerry Weiss]

DEC was were specific about the settings for SCSI mode that MicroVAX 
3100 firmware and VAX/VMS would accept before enabling third party 
drives in that era.   Not all early drives that would accurately 
do/report media recovery operations.

Suggest you look at this post and compare to the SCSI drive settings.   
Its a bit of work, but I have updated the mode settings for drives used 
on my MicroVAX's.  I cannot speak for the DEC2000.

https://groups.google.com/g/comp.os.vms/c/RAaUpP_XXEw/m/BWn64YZYwBQJ

Jerry


On 12/5/21 9:08 AM, Bill Degnan via cctalk wrote:dec2000
> Nigel,
> If you have two drives of the same volume name in VMS that will cause
> issues.  You did not provide a lot of detail to give you specific answers.
>
> Its complex but here is a starting point
> https://www.vintagecomputer.net/browse_thread_record.cfm?id=604&tid=18
>
> I am a hobbyist in vms, not an expert.
>
> Bill
>
> On Sun, Dec 5, 2021, 8:46 AM Nigel Johnson Ham via cctalk <
> cctalk at classiccmp.org> wrote:
>
>> I am trying to format a couple of SCSI drives on the Alpha.  They are
>> connected using the external cable and are mounted in an Open Storage
>> Systems (OSS) box. The drives were working when removed from a PC.
>>
>> SRM shows only one of them coming up as DKA200.  I have set the two
>> drive ID switches to 2 and 3.
>>
>> Lack of info is hampering me, I have gleaned form various sources that
>> the following command should work:
>>
>>>>> t scsi format a 2 0
>> which just returns
>>
>>>>> OK
>> immediately, without doing anything.
>>
>> VMS allows me to ini the disk, but then when I try to mount it, I get an
>> operator services message saying it is offline, please mount volume in
>> _$3$dka200:
>>
>> Anybody with experience here?
>>
>> cheers,
>>
>> Nigel
>>
>>
>> --
>> Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
>> Amateur Radio, the origin of the open-source concept!
>> Skype:  TILBURY2591nw.johnson at ieee.org
>>
>>
>>
>>