What is RAID 5?
RAID 5 is a storage device which serves as a solution to balance the memory property with data security and storage cost. RAID 5 can be regarded as a compromise to compensate the lack of performance for RAID 0 and RAID 1; it offers a strong bulwark to protect the system data, however, the security level it provides is lower than Mirror does, and the ratio of RADI 5’s disk capacity utilization is higher than that of Mirror.
RAID 5 shares a similar reading speed with RAID 0, the only difference between them is that there is an additional Parity Check Information added to RAID 5, so reading on a RAID array (include RAID 5) is considerably slower than on an independent disk array. Meanwhile, since there are several data respond to a single Parity Check Information at one time, the disk capacity utilization of RAID 5 is much higher than that of RAID 1, consequently, the storage cost is also relatively lower.
Reasons and how to backup raid 5 drive
Minimum number of drives required by RAID 5 is 3, and RAID 5 stores data across several disks; however, the RAID array will be identified as a singular disk by your computer. That is to say, both your computer and the backup program would read your RAID 5 as a common disk drive. To improve security, it’s often wise to hire a backup software to do a backup for the entire RAID disk. That’s because you can easily restore those important data on that disk if your system is crashed due to some unwanted reasons such as, hardware/software conflict, HDD overload, bad ram or hacker attacks.
To do RAID array backup, you should first download and install a professional backup software. Find one by searching on Google (there are countless freeware you could find in there) or you can try the most honored free software to backup RAID 5 drive – AOMEI Backupper.
Step-by-step tutorial about how to backup RAID 5 drive:
Step 1: Choose the “Disk Backup” option under the “Backup” tab.
Note: You can set a name for your backup at “Task Name” so that it can help to distinguish the current backup from the previous. After that, select a source disk which you want to backup and then select a destination path to store the image file.