Computer Science & Algorithms Flashcards
1
Q
What is RAID0?
A
Striping.
0 redundancy. You have 2 disks and they do something called striping. Basically the CPU writes to one then to the other, so the data is split across disks.
If one disk is lost, all data is lost.
2
Q
What is RAID1?
A
Mirroring.
1 redundancy, 100 percent. You have two disks and the data is copied onto the other disk.
3
Q
What is RAID5?
A
Striping with parity.
Better than 0, consumes less disk space than 1.
You spend 1/5 of a disk for redundancy.
4
Q
What is RAID6?
A
Striping with Double Parity
It is even better than 5. Can tolerate the failure of two disks.
5
Q
What is RAID10?
A
A combination of 1-0. Requires at least 4 disks.
