Hi,

I am considering a R200 - 16TB for a SAN environment. We would like to get 12TB usable without going to the next config which is 24TB. I calculated the usable space as follows:

2 disks for default volume 1 parity disk 3 volumes with 14 drives (12 data, 2 parity) 1 volume with 11 drives (9 data, 2 parity)

This gives me a total of 45 data disks. Knowing that each 320GB disk is formatted to 274GB, and considering the 10% WAFL, I get 11.1TB usable 274 * 45 * .9 = 11.1

1. Can I create larger RAID sizes by changing the RAIDsize option on R200 from 14 to 18? 2. Is it possible to change the single parity raidsize from 7 to 13? 3. According to block admin guide, with NO snapshots, volume has to be 10% larger than the total LUN size. It this is a must? I am able to create LUNs that are the same size as the volume. 4. Is it possible to combine default def. volume with other data volumes?

Thanks,