Refer to Scenario . A customer is looking to modernize their backup infrastructure. The
current environment consists of a single centralized data center and several remote sites.
The centralized data center hosts all core services and applications. The remote office
primarily consists of sales personnel with 4000 use-North America, 500 in Europe, and 300
in Asia using file servers. The current backup environment at the primary site uses
CommVault backing up to a Fibre Channel tape library that contains four ITO-4 tape drives.
Currently they are backing up a number of file servers as well as several databases that
have average change rates of 7% daily Remote office backups are currently performed by
having users copy files to regional file servers that are then backed up to tape. In the past
few months, the customer has experienced problems with getting backups to finish within
their defined windows as well as issues with the tape library hardware. They now have
concerns about gaps in their backup coverage as well as the reliability of the tape media. In
addition, an internal audit shows a large amount of user-generated data is unprotected on
remote user laptops. The customer is looking for a common platform to standardize their
backups. They want a solution which allows for a centralized infrastructure so -they do not
need to rely on remote resources to address hardware and software issues. The other goal
is to move away from tape to a more reliable disk-based solution. The customer is
evaluating EMC Avamar as a possible solution to backup their remote users. They are
estimating that each machine will take approximately 10 minutes to backup. They would like
all backups to complete in 8 hours. What is the minimum number of storage nodes needed
to support the necessary connections to complete the backups of the North American
system in the defined window?

A.
3

B.
4

C.
5

D.
6