INPUTOUTPUT AND STORAGE DEVICES
STORAGE DEVICES HARD DISK SSD AND FLASH MEMORY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
RAID-0
|
|
|
RAID-5
|
|
|
RAID-1
|
|
|
RAID-2
|
Detailed explanation-1: -RAID 1 is a fault-tolerance configuration known as “disk mirroring.” With RAID 1, data is copied seamlessly and simultaneously, from one disk to another, creating a replica, or mirror. If one disk gets fried, the other can keep working. It’s the simplest way to implement fault tolerance and it’s relatively low cost.
Detailed explanation-2: -Disk mirroring, also known as RAID 1, is the replication of data to two or more disks. Disk mirroring is a good choice for applications that require high performance and high availability, such as transactional applications, email and operating systems.
Detailed explanation-3: -RAID-1-provides fault tolerance by using disk mirroring (also called shadowing). Each byte of data on a disk is duplicated on another physical drive, providing 100% data redundancy.
Detailed explanation-4: -RAID 10 utilizes both data striping and disk mirroring to achieve data redundancy and thus a high degree of fault tolerance.