I have a new machine with one 128GB SSD and two 1TB HDD. On the SSD is the OS and my initial thought was to put the two HDD in RAID 1 for user data.
After some more thought I came up with two other setups and now I'm in doubt :) Can someone advise what would be the best setup?
1: single SSD and HDD in RAID 1 (original thought)
2: Create 2 partitions on the HDD (128GB and 872GB). Put the two 872GB in RAID 1 and create another RAID 1 with the SSD and one 128GB HDD partition.
3: Create 2 partitions on the HDD (750/250), put the 705GB in RAID 1 and use the 2 250GB as backup and make automatic snapshots of the SSD to (one of) these partitions.
I think the 2 main questions are:
Is it advisable to create a raid array with only part of a drive and actively use the other part of that drive or should you always use the full disk?
Is it advisable to create a raid 1 array with a SSD and HDD or will that blow the whole speed advantage of the SSD?