It will throw off the balance a little, but probably not a problem for you, let me qualify that:
I am assuming 6 drives today is delivering acceptable performance. Adding 6 more drives will potentially double you available performance. As the 12 drive fill up and grow, the original 6 will fill up first, and will continue to service reads and writes over the data on there, but all new growth will go to the large 6 new drives that have freespace, this for new writes, you will be back to 6 drive's worth of performance.
If you are having performance constraints, this discussion could go in a different direction.
_________________ Richard Siemers The views and opinions expressed are my own and do not necessarily reflect those of my employer.
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