RAID builder and failure lab

Stripe, mirror, and parity arrays. Fail disks and watch availability and capacity change.

RAID 10 mission: fail two disks in different pairs (array stays up), then fail both disks in one pair (array dies). RAID is not a backup.

Disk 2DEGRADEDOne labeled disk failed. Array still up on RAID 1/5/10 until extra failures. RAID 10 pair math is in the RAID lab.

Can lose one disk per pair. Not two in the same pair. RAID is not a backup.

Disks4

Usable capacity (1 TB disks, simplified): 2 TB · failed disks 0 · array healthy

Pairs: [1+2][3+4]Two failed disks are fatal only when they are the same mirrored pair.

Click a disk to fail it. RAID is not a backup: a deleted file is deleted on every member.