VSI’s Enterprise Summary screen reports a total of 695TB of Free Space across all of the arrays in the environment; however, this number can be misleading because storage for an application is generally provisioned from a single storage array. To assist in our analysis, The Free Space by Device report will show the amount of Free Space at the individual array level.
The bar chart on the right shows two important pieces of information. First it shows available Free Space in each array. Second, it shows the Largest Contiguous Free Space in the array. This second figure is important because admins typically provision contiguous storage to an application. To make the chart easier to read for our purposes, we can hide the Free Space information. Now, we can easily see which arrays have at least 15TB of contiguous free space. Let’s take a closer look at the DS8K05 array.
Returning to the Enterprise Summary screen, we can drill down into DS8K05 by double-clicking on its entry in the Enterprise Summary Data report. From here, we can inspect the Free Space by Disk Group detail report to understand where Free Space is located in the array. This array has formatted its storage into two disk groups, and both disk groups have sufficient free space to accommodate our 15TB requirement. We also see that both disk groups are SAS drives which meet the performance requirements of the application.
In less than 3 minutes, VSI has given this customer the information she needs to identify available storage required by the new worker safety application.