Hello,

I was hoping to get a little more information about the Logical Capacity limits with XtremIO configs given what I have read in the education materials and deployment guides. My understanding is that the logical capacity/volume capacity shown in the dashboard is the amount of logical storage that has been configured as LUNs. Within this value's bar graph there is what is mapped out to the servers as LUNs and then what is actually consumed physically with unique data (feel free to drop some 411 on me if this is incorrect as it may impact the answers below ).

I have seen different values for the maximum logical capacity per cluster and trying to understand if this limit is a hard limit based on the architecture of each type of x-brick or really dependent on the type of data being stored given the deduplication/compression rates as noted in the release notes. For example, in one document I see 48TB as the max for a 20TB x-brick cluster and in the release notes this max value range from 73-130TiB. I would tend to see it as more of a range based upon the type of data being stored and the data reduction ratios achieved, but my questions are as follows:

1. Which is the real limit? Is it a hard limit or range as noted in the release notes?

2. Given the answer to #1 above, regardless of it being a hard or soft limit - what happens if the configured LUN space exceeds the limit (going by the definition that logical capacity is the amount of logical storage that has been carved up as LUNs)? Is there an alert or some sort or it is inferred that the system's physical capacity has met its finite limit?

Given there is an RPQ process for more than 130TiB, I'm just trying to understand what numbers are correct and what happens if they are exceeded?

Thanks for any insight!