RAID 1 - Disk mirroring. Optimized for Redundancy
RAID 1 uses mirroring to write data to multiple drives. This means that when you write a file, the file is actually written to two disks. If one of the disks fails, you can simply replace it and rebuild the mirror.
The tradeoff with RAID 1 is cost. With RAID 1, you must purchase double the amount of storage space that your data requires.
Minimum number of drives: 2
Strengths: Very high performance; Very high data protection; Very minimal penalty on write performance.
Weaknesses: High redundancy cost overhead; Because all data is duplicated, twice the storage capacity is required.
Many computer users have the experience of system crash or data loss, for example, hardware conflict, bad ram, hard disk drives overload, viruses attack, software conflict, etc. If your system is crashed and then you will realize that you really need backup software after suffering the great pain to sacrifice your precious weekends or dating time to reinstall your operating system.
Some people was puzzled by the disk mirror function of RAID 1 and think it is safe enough to protect the operating system and the data, so they may ignore backing up. In fact, only when one hard disk has physical failure, you can still boot your computer and replace the faulty hard disk, but if you encountered virus, system crash, application conflict as well as "software" related problem, RAID 1 redundancy is useless. It is a good habit to backup operating system and the applications on your RAID, whenever there is error, you can simply restore system to prior state.
Is there a good RAID 1 backup software? The answer is yes and this article will introduce a great solution to backup RAID 1 with a free RAID backup software - EASESUS Todo Backup.
1. Launch EASESUS Todo Backup and choose "Backup" to run backup wizard.
2. Choose a partition or the entire virtual RAID 1 hard disk.
You can choose single/multi partitions of one hard drive, or multi hard disks of several drives at the same time to backup.
3. Follow the other steps by several mouse clicks to backup RAID 1 hard disk or partition.
You can save the image archive to local hard disk, LAN computer disk or CD/DVD. Besides backing up to an image archive, you may also clone the virtual disk to replace or upgrade the old one by this free RAID backup software.
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