Re[2]: How to calculate "daily change rate"?

We would not be discussing spinning storage here, only SSD or NVMe. Given what IBM is selling now I was trying to understand why we would care. Turns out Rob's interest has more to do with volume for a software product than it does for hardware.


--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


------ Original Message ------

From "Patrik Schindler" <poc@xxxxxxxxxx>

To "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxxxxxxxx>
Date 11/10/2022 11:00:02 AM
Subject Re: How to calculate "daily change rate"?

Hello Jim,

Am 10.11.2022 um 17:39 schrieb MidrangeL <midrangel@xxxxxxxxxxxxxxxxx>:

My other thought is "why do I care"? The SAN is going to out perform the I/O on the internal storage (assuming the Fibre network is adequate) so, as long as you have sufficient space for the actual storage, growth, and flashcopies for backup and testing I'm at a loss to really understand why the problem.

You're probably aware that for quite some time now, even spinning rust is sold with some penalty regarding read and write volume? As in "warranty void when write volume exceeds 50TB per day", or so.

While I can understand this for writing to SSDs, I'm also at a loss to understand this limitation for real disks.

:wq! PoC

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