[gpfsug-discuss] Online data migration tool

[scott]

Question: Who at IBM is going to reach out to ESPN - a 24/7 online user 
- with >15PETABYTES of content?

Asking customers to copy, reformat, copy back will just cause IBM to 
have to support the older version for a longer period of time

Just my $.03 (adjusted for inflation)


On 11/29/2017 11:35 AM, Jonathan Buzzard wrote:
> On Wed, 2017-11-29 at 11:00 -0500, Yugendra Guvvala wrote:
>> Hi,
>>
>> I am trying to understand the technical challenges to migrate to GPFS
>> 5.0 from GPFS 4.3. We currently run GPFS 4.3 and i was all exited to
>> see 5.0 release and hear about some promising features available. But
>> not sure about complexity involved to migrate.
>>
> Oh that's simple. You copy all your data somewhere else (good luck if
> you happen to have a few hundred TB or maybe a PB or more) then
> reformat your files system with the new disk format then restore all
> your data to your shiny new file system.
>
> Over the years there have been a number of these "reformats" to get all
> the new shiny features, which is the cause of the grumbles because it
> is not funny and most people don't have the disk space to just hold
> another copy of the data, and even if they did it is extremely
> disruptive.
>
> JAB.
>