How do you persist data in memory (RAM) between datasteps i.e. reduce I/O between datasteps?

[MattSan]

This sounds like a great solution! Thank you for your input.

[Patrick]

@MattSan

On average the server CPU's are at around 90% idle and uses about 25% of its RAM during daily use meaning that approximately 75% of the RAM is underutilised.

You probably need to consider peak memory usage instead of the average in order to avoid the risk of job failures. 

[MattSan]

Thank you for your response, when I posted this comment I was referring to peak memory usage.