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28 End-User Computing For Dummies, Nutanix Special Edition These materials are © 2020 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Linked clones keep a delta disk available that holds all of the changes and additions that have been made to the clone since its creation. Bear in mind that the delta disk will grow in size over time and may grow up to the size of the parent's disk. Implementing the Right Infrastructure Solution Hardware in a VDI world is important and there are decision points all along the way. Choosing VDI storage All kinds of storage architectures are available on the market and any of them are suitable for use with VDI, provided they have the performance characteristics to support your VDI needs. You can choose from hybrid storage arrays, all-flash storage arrays, and hyperconverged infrastructure. For some VDI systems, even cloud storage may be an option. Hyperconverged infrastructure remains a top choice today for supporting VDI. VDI is complex, and hyperconverged infrastruc- ture's hardware simplicity can bring simplicity. As you need to add more nodes, you just add compute, RAM, and storage all at the same time and you don't need to worry about downtime. The key guidance on storage, besides capacity, is to make sure it can support the input/output operations per second (IOPS) load that your VDI environments will impose. Modern flash-centric architectures have largely eliminated early IOPS challenges asso- ciated with VDI, but especially in larger deployments, make sure that the storage solution you choose can handle even the most intense boot and login storms. Table 2-2 provides an overview of your common storage options. Calculating storage capacity Calculating storage capacity requirements also has some vari- ance that you need to understand. If you use linked clones rather than full clones, the amount of capacity you need is cut dramati- cally. And, if you're using storage that provides deduplication