Re: Inherited an 18TB DB & need to backup

On 17/05/2020 08:12, Ron wrote:
> On 5/16/20 7:18 AM, Rob Sargent wrote:
>>> O
>>>> Another problem is storage devices fail.  S3 storage lakes _should_ 
>>>> be checking your data integrity on a regular basis and possibly 
>>>> maintaining copies of it iin multiple locations so you're not 
>>>> vulnerable to a site disaster.
>>> Tape FTW!!
>> Or WTF Tape??   :)
>
> Tape is durable, long-lasting, high-density, under your control, can 
> be taken off-site (don't underestimate the bandwidth of a station 
> wagon full of tapes hurtling down the highway!) and -- with the proper 
> software -- is multi-threaded.
>
Don't you mean multi-spooled??? :-)

Fascinating problem.  If the dump & load programs are designed to take a 
parameter for N drives for effective parallel operation, and N > 2, then 
things will run a lot faster.

I can think of several ways the the data can be dumped in parallel, with 
various trade-offs.  Would love to know how it's implemented in practice.


Cheers,
Gavn