Any issues with converting a Mechanical Disk RAID to SSD by replacing the drives one-by-one?
I couldn't find anyone online who has done this, so let's make this the place to post about it.
If you have successfully converted a RAID from Mechanical Disk to SSD, please come back and post your specs. (serverfault doesn't ask for registration, so it's really quick to post.)
FYI, I'm running an LSI MegaRAID 9260-8i with 8 3TB ST3000DM001 drives in RAID 6, so I'm a few years away from affordable 3TB+ SSDs. I've had 2 drives marked as Failed over the past 3 years and each time it took 8hrs to rebuild a drive. Of course backup first, and I'm aware of the risks to the other drives as I replace and rebuild each with SSD.
At the time of this post, 1TB SSDs can be bought for ~$350 each so people with smaller/less drives in their arrays may already be thinking about this. Does a 1TB SSD have the same capacity as a 1TB mechanical drive, or would it need to be replaced with something larger, like a 1.2TB SSD which is also available? Since oversizing the SSDs is an expensive proposition, what is the best way to confirm the actual max capacity of the drives? (Best practice is to use 3-5% less than full capacity to allow using a different model of the same size if yours is discontinued, but I know a lot of people don't do this.)