RAID
Sync technologies like Merge Replication and the Sync Framework track changes on SQL Server using triggers, stored procedures and special tracking tables. The act of tracking changes made by each SQL Server Compact or Silverlight sync subscriber can cause a lot of locking and blocking on the server. This diminishes performance and sometimes leads to deadlocks. 
Therefore, don’t listen to your SAN administrator when he says the RAID 5 will do. RAID 1 or 10 must always be used for all databases, tempdb, and transaction logs. Furthermore, each of these database objects must be placed on their own dedicated RAID arrays. No sharing! Remembers, as a DBA and sync expert, knowledge of SAN configuration must always be part of your skillset.
Keeping synching,
Rob
Sharing my knowledge and helping others never stops, so connect with me on my blog at https://robtiffany.com , follow me on Twitter at https://twitter.com/RobTiffany and on LinkedIn at https://www.linkedin.com/in/robtiffany
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