I own a Pegasus2 R6. I've replaced my original disks with 6 new ones, so I need to need to build a new array and logical drive. I prefer to choose for a raid level that will give me maximum protection. The Pegaus2 manual points out that Raid 6 is the safest Raid level.
Now I'm wondering if there is a difference between choosing Raid 6 (using all 6 disks) or choosing Raid 5 with a global spare configured (so 5 disks in Raid 5 and 1 for the spare). Since Raid 5 performs slightly better then Raid 6, would this give me the same safety net as Raid 6 when 2 disks fail but with better performance?
Thank you for your advice!