On Jan 14, 2010, at 7:49 AM, Mehdi Salehi wrote:

> Hi,
> What is the impact of putting copy storage pool on a slower disk subsystem
> than primary storage pool? Actually I would like to know the algorithm that
> TSM uses to synchronize mirror storage pools. Are they 100% synchronized?

A primary disk storage pool is almost always random DISK type.  A copy storage 
pool must be sequential, and is almost always tape.
There is automatic synchronization from primary to copy storage pool where 
Simultaneous Write is configured, as described in the Admin Guide manual.

  Richard Sims