[Info-vax] Programming languages on VMS

[Arne Vajhøj]

On 2/1/2018 7:24 PM, Bill Gunshannon wrote:
> On 02/01/2018 07:08 PM, Arne Vajhøj wrote:
>> On 2/1/2018 6:22 PM, Bill Gunshannon wrote:
>>> On 02/01/2018 06:00 PM, Jan-Erik Soderholm wrote:
>>>> Den 2018-02-01 kl. 23:37, skrev Bill Gunshannon:
>>>>> On 02/01/2018 05:27 PM, Jan-Erik Soderholm wrote:
>>>>>> Den 2018-02-01 kl. 20:42, skrev Bill Gunshannon:
>>>>>>> Really.  So when the system disk dies who replaces the software
>>>>>>> on it?  The PC weenie down the hall?
>>>>>>
>>>>>> You replace the failing disk in the mirror-set and HBVS rebuilds
>>>>>> the failing disk. No software is "replaced".
>>>>>
>>>>> Who is "you"?  The secretary?  The Credit Union Manager?
>>>>> The PC weenie down the hall who is lucky if he can install
>>>>> a printer?
>>>>
>>>> Well, if you do have a system, I guess you do also have someone
>>>> to fix small issues or someone to call in. Note that a failed
>>>> disk in a mirror-set is not that urgent, in particular if it
>>>> is an 3-disk mirror set. It is not a show-stopper and you
>>>> can get it fixed at office times.
>>>
>>> But that was my point exactly.  It would take someone familiar with
>>> not only VMS but the hardware that VMS runs on, which is not PC
>>> class hardware.
>>
>> You don't think a normal bright guy can pull out a hot swapable
>> disk and put another one in?
> 
> Possibly.  But what about the commands needed to integrate the new
> disk into the shadow set?  I have admined numerous VMS systems as
> well as more than a dozen other OSes and I couldn't do it without
> the documentation.

I most admit that I have zero experience with software/host
based mirror.

Maybe that is a problem.

If it was hardware based mirror, then it would just work.

Arne