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From: =?UTF-8?Q?Arne_Vajh=C3=B8j?= <arne@vajhoej.dk>
Newsgroups: comp.os.vms
Subject: Re: RX2800 sporadic disk I/O slowdowns
Date: Sun, 20 Oct 2024 17:23:08 -0400
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On 10/20/2024 5:16 PM, Lawrence D'Oliveiro wrote:
> On Sun, 20 Oct 2024 09:17:21 -0400, Arne Vajhøj wrote:
>> On 10/19/2024 11:51 PM, Lawrence D'Oliveiro wrote:
>>> On Sat, 19 Oct 2024 21:52:16 -0400, Arne Vajhøj wrote:
>>>> The context is one where data loss is not acceptable.
>>>
>>> Data loss is unavoidable. If the power goes out, all computations in
>>> progress get lost. There’s no way around that.
>>
>> True, but that is not the issue.
> 
> You said it was.

Loss of completed/committed data is the problem.

Work in progress is difficult to avoid loosing - and
it is not really desirable to have half done work
saved.

>> Think transactions.
> 
> Which is an entirely separate thing from data loss.

No.

Remember what the D in ACID stands for.

Arne