You plan to implement Hyper-V Virtualization to test applications.
In the test environment， you will take frequent snapshots of virtual machines （VMs）.
You need to recommend which disk types you should use for the planned deployment of the VMs.  
Which disk types should you recommend？（）

Your network contains an Active Directory domain. The functional level of the domain is Windows Server 2008. The domain contains application servers that run either Windows Server 2003，Windows Server 2008， or Windows Server 2008 R2.
The network contains 5，000 client computers that run Windows XP Service Pack 3 （SP3）. Your company has a line-of-business application named App1 that has the following characteristics：
- Must be available offline.
- Only runs on Windows XP or Windows Server 2003.
The company plans to migrate all of the client computers to Windows 7 Service Pack 1 （SP1）. You need to recommend a solution to ensure that App1 can run on the client computers after the planned migration. The solution must use the minimum amount of administrative effort.
What should you include in the recommendation？（）