Answer to Question #289775 in Computer Networks for Timmmy

Question

There is a Network Attached Storage device used as NFS share for a file server. NAS is built using RAID 6 array. Please describe the consequences for the file server if 1 disk fails on the NAS. If 2 disks fail? And finally, if 3 disks fail on the NAS simultaneously.

Answer 1

There is a Network Attached Storage device used as NFS share for a file server. NAS is built using RAID 6 array. Please describe the consequences for the file server if 1 disk fails on the NAS. If 2 disks fail? And finally, if 3 disks fail on the NAS simultaneously.

Answer:

NAS act as a storage Area for devices from a single hard drive to a whole drive.NAS is scalable meaning you can add what you have to. Also it is flexible.

The consequences for the file server if 1 disk fails

It will survive and you will not lose your data. The disk array continue functioning because the data on the fail disk can be rebuilt again reason is Raid 6 has a double parity.

 If 2 disks fails –RAID 6 handles this problem without total data loss. It solved by creating enough parity data to handle 2 failures.

If 3 disks fails-We have understood that RAID 6 has dual parity that will bring back two concurrent disks that have died, but in the case of the third disk fails the array is gone and you will need to restore the data from the backups.