Question : Windows 2003 to 2008R2 cluster migration and enforced quota

Ok, here is a good one:

We have just migrated our file servers from a 2 nodes Windows 2003R2 x86 to a 2 nodes Windows 2008 R2 x64 using the cluster migration tool. All our volumes are 300GB large and they all have 50% space available according to the disk manager.

Everything went fine however the following doesn't work right:

1) When quotas are enforced and set to deny adding new file to the user if their home directory is full, the cluster service reports 50MB available on the disk. If I don't deny, the cluster service reports the correct free space.

2) When deny for quotas is set, I cannot creat a volume shadow copy for the disk, the system states that there is not enough space to do so. If I don't deny, I can create the snapshot and set it up and when I enforce deny the volume shadow copy can grow normally on every snapshots.

I have really no ideas on what's going on here as this is a simple file server configuration in a cluster and there is no other services running on it. Any help would be appreciated

Answer : Windows 2003 to 2008R2 cluster migration and enforced quota

Ok, I figured it out. The Builtin System account got quota restrictions from the migration. Granting unlimited quotas for each volume for the System account solved both issues.