How does disk mirroring differ from disk duplexing?

Mirroring stores the same data on separate disks on the same controller channel; duplexing stores the same data on separate disks on separate controller channels. Duplexing can also include using two different drivers.

How many controllers are needed for disk duplexing?

If RAID 1 uses two disk controllers, it is disk duplexing.

Is RAID mirroring and duplexing?

RAID 1 is based on disk mirroring or duplexing. Data that’s written to one disk is also written to another, so that each disk has an exact copy of the data and one disk’s data is a mirror image of the other’s. If one of the physical disks fails, the server can continue operating by using the other disk.

How disk mirroring is implemented?

Hardware-based mirroring is implemented through the use of RAID controllers installed in the system to which separate hard disk drives are attached. These hard disks appear as different volumes to the system. Each data sector is identically written to all the volumes, thus creating multiple copies of the volumes.

Should I mirror or backup?

Determining which feature is best for you comes down to your specific needs: Mirror ensures the most recent changes made to any given file are on your computer and drive, while backup is appropriate for longer term plans, such as finding an old file that might’ve been deleted from the source on accident.

What is the minimum number of disks required for RAID 1?

A minimum of two disks is required for RAID 1 hardware implementations. With software RAID 1, instead of two physical disks, data can be mirrored between volumes on a single disk.

How does disk mirroring work?

Disk mirroring is a technique used to protect a computer system from loss of data and other potential losses due to disk failures. In this technique, the data is duplicated by being written to two or more identical hard drives, all of which are connected to one disk controller card.