Im having exactly the same issue, paying for 115 Workstations and 15 Enterprise Servers ... all can be manually connected and running tasks that...
Using Sysprep in Standard Mode without special modified inf for using addional mass storage drives would give you only the possibility to change...
One suggestion for the choose of esata drive ... I have an Lacie Quadra 500gb is running like hell backups with about 72MB/s.
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