Disk1: 2. Disk2: 1.

The requirement is that data on SSPace1 must remain available at all times, meaning the storage pool ' s virtual disks must be able to tolerate physical disk failures without becoming unavailable or losing data. A three-way mirror keeps three copies of every block of data spread across different physical disks, so it remains available and readable even if any two of those disks fail simultaneously; the resiliency is fixed at tolerating two failures regardless of how many total disks (8, in Disk1 ' s case) make up the pool, as long as there are enough disks to support three-way mirroring, which eight comfortably provides. Disk2 uses parity resiliency, which stores a single parity block that can reconstruct data after one physical disk failure; unless dual parity is explicitly configured (which requires being set at virtual disk creation time and is not indicated here), a standard parity virtual disk tolerates only one physical disk failure before data becomes unavailable, regardless of the pool having twelve physical disks. Administrators sometimes assume more disks in a parity pool automatically means more fault tolerance, but the number of disks a parity space can lose is determined by the resiliency configuration (single vs. dual parity), not by the total disk count. Therefore Disk1 tolerates two disk failures and Disk2 tolerates one.