I thought I’d cover how you can size (vCPU, memory, and disk) vRealize Operations when using Dell EMC Storage Analytics (ESA). When you deploy vRealize Operations, VMware will offer sizing options in the deployment wizard ranging from Extra Small to Extra Large.
The sizing options will dictate how many vCPUs are assigned and how much memory is allocated and though not included in the screen, the sizing does estimate disk usage. vROps also operates as a cluster so these parameters are for this single VM and you might deploy many, and cluster them together to achieve the desired scale. As a standard deployment, collecting vCenter objects, this methodology is sufficient; however when plugins are deployed into the vROps environment, the sizing requirements may change and this is true of our Dell EMC Storage Analytics (ESA) plugin.
To include plugins, VMware offers a sizing spreadsheet to calculate the best deployment sizing to use. It is version based, so start with the main KB article:
The KB will contain links to other KB articles according to your vROps version.
On the right-hand side of your selected KB you’ll find a link to an Excel spreadsheet.
Using this spreadsheet there are different tabs depending on the products. One of these tabs is EMC ESA Input where we will have all our arrays. I’ve put in some numbers just for the VMAX (note we are using the generic name of VMAX but this includes both VMAX3 and PowerMax) so you can see how it translates into the sizing options. Notice that Extra Small was eliminated from the options.
Here you can put in the appropriate values for your array. Depending on your access you may need to get the assistance of the Storage Administrator. The only value here that is not the exact number from the array is devices. You should only count the VMware devices as ESA filters out the others. We do report all storage groups, however, so do count all those.
Now if you don’t like spreadsheets, VMware has fortunately converted it into a GUI wizard. Navigate to:
The wizard will walk you through everything. Choose your vROps version, and then the Advanced version which will give you access to the ESA metrics.
Notice to the right of the second screen it allows you to project growth and how long to keep the data. Using these parameters will allow you to get a good estimate of future disk usage.
We are currently working with VMware to update the spreadsheet and wizard since we have a few more metrics for VMAX/PowerMax and a new platform PowerStore to include, but for VMAX/PowerMax those new metrics aren’t enough to skew the disk sizing so please use this spreadsheet/wizard as is.