[Info-vax] Reclaim disk space for a 3PAR Storage Box

[Dave Froble]

On 8/30/2021 1:44 PM, Simon Clubley wrote:
> On 2021-08-30, Stephen Hoffman <seaohveh at hoffmanlabs.invalid> wrote:
>> On 2021-08-30 12:19:51 +0000, Simon Clubley said:
>>
>>> Hard to believe that this is still a problem on VMS in 2021.
>>
>> That would be a system that hasn't seen appreciable file system updates
>> or a file system replacement in a ~quarter-century, and one that
>> remains limited to 2 TiB volumes?
>>
>
> Yes, that's the one.
>
> And nothing looks like it is going to change soon given that the
> two candidate replacement projects for it appear to have both been
> cancelled.
>
>> A whole lot has changed with storage and storage I/O since HDDs reigned
>> supreme. 12 TB drives, and 4 TB SSDs are now commonplace, among other
>> differences.
>>
>
> SSDs make me nervous because when they fail, they tend to fail hard
> and sudden without any warning.

Never seen a total head crash on a HDD?  Ok, neither have I, but I have 
seen HDDs fail, and once they start, you cannot count on getting 
accurate data off them.

Oh, and welcome to the new world of cheap and semi-reliable PC junk 
hardware ....

> Hardware RAID or software volume shadowing would normally take care
> of that but there have been enough cases in recent years where a
> complete set of SSD devices all fail at the same time due to firmware
> bugs to make me nervous about using them.

See above about cheap and semi-reliable PC junk hardware ....

> I have never lost a HDD due to a firmware bug.

You must be talking about older not so cheap and usually fully debugged 
( well, sorta ) disk drives ....

SSDs are all that I'll acquire now, but, I still run disk drives that I 
have.  Haven't lost a SSD, yet ...  Don't jinx me ...


-- 
David Froble                       Tel: 724-529-0450
Dave Froble Enterprises, Inc.      E-Mail: davef at tsoft-inc.com
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