[Info-vax] OpenVMS servers and clusters as a cloud service

[Richard Maher]

On 03-Jan-18 12:07 AM, DaveFroble wrote:
> Richard Maher wrote:
>> On 02-Jan-18 1:45 PM, DaveFroble wrote:
>>> Richard Maher wrote:
>>>> On 01-Jan-18 1:01 PM, DaveFroble wrote:
>>>>> Phillip Helbig (undress to reply) wrote:
>>>>>> In article <p2bjfs$b3j$1 at dont-email.me>, Stephen Hoffman
>>>>>> <seaohveh at hoffmanlabs.invalid> writes:
>>>>>>> You're creating a more complex variant of just part of what 
>>>>>>> sandboxing and provisioning provide.
>>>>>>
>>>>>> Perhaps.  The question is how one can come up with a more 
>>>>>> efficient upgrade mechanism without making it too difficult to 
>>>>>> adapt existing configurations.
>>>>>>
>>>>>
>>>>> Perhaps one just doesn't try to do that.  As Steve has perhaps 
>>>>> mentioned once, or twice, or a million times, holding onto the past 
>>>>> too hard can really screw up the future.
>>>>>
>>>>> If VSI comes up with some better stuff, I for one don't have a 
>>>>> problem with a fresh install.  Come to think about it, every x86 
>>>>> VMS system will require a fresh install.
>>>>>
>>>>
>>>> Exactly. There is *no* common system disk save a Desired State image 
>>>> copy. And, at least for IaaS, VMS Clusters are dead. The DLM is dead 
>>>> unless you can tolerate the irony of licensing Oracle's.
>>>
>>> I don't agree.  The DLM is alive and well, and if VSI uses a 
>>> recommendation I sent to them, it would have numeric range locking.
>>>
>>
>> You're missing the point :-( The DLM is/was amazing and lives on in 
>> VMS Clusters but that pathetically limited (geographically and 
>> scalability wise) architecture has been resigned to niche applications.
>>
>> If VMS wants to grow it needs World Wide Session State services and 
>> lock managers.
>>
>> 32 byte lock value blocks are a fucking joke today!
> 
> The DLM is rather useful on a single system.

It is extremely useful and on a cluster as well! VMS was trailblazing 
yet again.

> 
> There is always room for improvement.
> 
> 

But Oracle brought out Cache Fusion about 15 years ago.