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OpenVMS Hobbyist Program | VAX Systems Forums | VAX Hardware Forum
Author VS4000/90 Storageworks Options
urbancamo
Member

Posts: 38
Location: Windermere, UK
Joined: 16.05.07
Posted on May 22 2008 02:30
Hi, quick question -

I have a VS4000/90 and a DEC3000/600. I would like an external storageworks box that holds say eight disks that would ideally work with either machine

Can you tell me if a BA356 with 8-bit personality module would work with the VAX? I believe it has a single narrow SCSI bus. How are SCSI ids handled on the external box. Does this mean I can only have 8 devices on the bus at any time?

I'm pretty sure the DEC3000/600 is 8-bit fast with an internal and external bus. Is there anything more suitable for the Alpha box?

Many thanks for the help, Mark.
http://www.wickensonline.co.uk
Author RE: VS4000/90 Storageworks Options
HobbyistOne
Super Administrator

User Avatar

Posts: 126
Location: Plano, TX
Joined: 20.02.08
Posted on May 22 2008 10:38
Yes, a BA356 would work, although you can only have 7 disks (the VAX or Alpha would be the 8th node on the bus). I think they both have narrow SCSI. If you remove the terminator, and set the firmware SCSI-ID, you can have both the VAX and the Alpha sharing the same BA356, and even set up a shared-SCSI cluster.

SCSI ID's are set by the physical slot number. First slot is 0, second 1, etc. Hosts are typically set as ID 7, and conveniently, the power supply typically sits in slot 7!

I had a cluster with a shared SCSI, and put dual power supplies in 6 & 7, set the SCSI-ID's for the Alphas as 6 & 7, too, and everything shared great.
Author RE: VS4000/90 Storageworks Options
urbancamo
Member

Posts: 38
Location: Windermere, UK
Joined: 16.05.07
Posted on May 22 2008 21:47
Thanks for the help. I'm presuming with the VAX I would need to be careful about internal drives. It is currently installed with 2 x internal hard drives and a CDROM, so I would need to get all the SCSI ids so that they didn't clash (given a quick finger count that would leave 4 free SCSI ids).

I don't believe I have the same problem with the DEC3000/600 given that it has a separate internal and external SCSI bus.

Regards, Mark
http://www.wickensonline.co.uk
Author RE: VS4000/90 Storageworks Options
HobbyistOne
Super Administrator

User Avatar

Posts: 126
Location: Plano, TX
Joined: 20.02.08
Posted on May 23 2008 03:30
Just do a "SHOW DEV" at the >>> prompt, and it will tell you what it sees. The CDROM is likely DKA500 (SCSI ID 5), and the two disks are likely DKA200/DKA300. With the system as 7, that would leave you 0, 1, 4, and 6.
Author RE: BA356s
saq
Member

Posts: 53
Joined: 24.05.08
Posted on May 25 2008 04:48
Sadly, you're on the wrong side of the Atlantic, as I have several extra BA356 shelves here.

Don't write off all of the "putty" shelves automatically - while the grey/blue shelves are all wide (and ultra-capable), there do exist wide putty shelves - all of mine are. Look for the removable personality module at the bottom (BA350s (the narrow shelves) all use HD50 connectors soldered to the backplane).

Can you cluster VAX with Alpha over SCSI? None of my VAX hardware is as new as the 4000/90, but on the 3100 series it doesn't seem to quite work right. I think it requires SCSI-II command set or else a very careful hand with the systems (AT&T 3B2 systems could run with a shared-SCSI disk over SCSI-I, but it is a bit touchy per the manual).
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malmberg
June 26 2018
https://www.openvmshobbyi
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hp?forum_id=10&thread_id=
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bhamakripa
June 24 2018
I am trying OpenVMS via SIMH. Need to get OS binaries for v7.3. Registered here but don't have any membership number yet which is needed to get license. Pls suggest what to do. I hardly know anyth

basilh
June 05 2018
Any other forum members in Perth, Australia?

LouF91
April 05 2018
ah maybe they love that!

malmberg
March 24 2018
Probably. More people hang out on the comp.os.vms newsgroup.

vaxpert
March 23 2018
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goodbyespy
February 27 2018
To Prohorenko. Please, visit group OpenVMS in the ok.ru

peteherrera
February 24 2018
How much does it cost to buy a complete OpenVMS hardcopy documentation set of the latest version

prohorenko
February 17 2018
Please help to obtain the license on OpenVMS

malmberg
December 12 2017
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nmbonao
December 08 2017
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malmberg
September 10 2017
https://sourceforge.net/p
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lation/ For the most part just use VMS 6.1 media instead of 7.3. But why run the older release?


DoeveR
August 07 2017
Where can I find the write up on running VMS 6.1 using the simh emulator?

Bart
March 20 2017
Happy to have found my password again!

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