Migrate from 2008 File Server Fail-Over Cluster to Server 2012 Scale-Out File Server Cluster using Cluster Shared Volumes

We've migrated from a 2008 SP2 x86 fail-over cluster to a Server 2012 Failover over Cluster.

Our original plan was to create the new cluster as a Scale-Out File Server using Cluster Shared Volumes.

However when testing we encountered the following issues:

1. Users accessing shares from Win7+ were ok, but Win XP machines were prompted for username/password.

2. We could not use DNS Aliases to point the virtual file share as it would return a blank folder.

Due to time constraints we decided to remain on a traditional active/passive File Server cluster running on the new 2012 Servers.

My goal is to move to a multi node, scale-out file server cluster and use CSV, however I need advice on the following:

1. Converting an existing NTFS volume (3TB/2.7TB used) to CSVFS, how long does it take and does it retain its NTFS security.

2. How can we maintain a share path using a DNS alias and allow all clients (Win XP, Win7 and Win8) to connect and access.

3. We are transitioning from XP to 7 and 8 so require co-existence and support for both, this could take 9-12 months to complete.

4. Security requirements for XP when browsing to a Scale Out FS CSV share, what and where this needs to be configured or possible registry changes.

Any help in this area is greatly appreciated ...

Regards,

Yusuf