Hi all.
I got a discussion recently and was told that Raid 6/Z2 works better with 4+2/8+2 number of disks. And if I use for example 8 disks total (6+2) I will get less usable space (in %) and worse performance. Which is surprising, but I can see a possible reasons to that.
1. Any difference in how hardware RAID6 and RAID Z2 works?
2. Do I get a penalty with either of those?
3. I'm about to test this with homelab. Since I don't have 8 spare drives, I wanna create 6-10 VMDKs, limit IOPS for each one and give it a try. Do you think it's a valid test?
If not limiting IOPS, I expect single drive performance and total performance will be about the same, since all VMDKs will be on the same Physical drive.
Thanks.
Vic
I got a discussion recently and was told that Raid 6/Z2 works better with 4+2/8+2 number of disks. And if I use for example 8 disks total (6+2) I will get less usable space (in %) and worse performance. Which is surprising, but I can see a possible reasons to that.
1. Any difference in how hardware RAID6 and RAID Z2 works?
2. Do I get a penalty with either of those?
3. I'm about to test this with homelab. Since I don't have 8 spare drives, I wanna create 6-10 VMDKs, limit IOPS for each one and give it a try. Do you think it's a valid test?
If not limiting IOPS, I expect single drive performance and total performance will be about the same, since all VMDKs will be on the same Physical drive.
Thanks.
Vic