RAID 1 array is a system of hard disk drives united with controllers. You need to have at least 2 hard disk drives or any other oddly even number of drives to make RAID 1 array. RAID 1 is mainly used to work with small file servers. The difference between RAID 1 array and other types of RAID is that it is built using a so-called mirroring principle – when data are evenly and fully recorded to two disks of array, this where its second name comes form — RAID 1 mirror – mirror disk array. RAID 1 arrays use a reliable and simple method of data protection that is implemented with the help of data duplication. In the event one of the two hard disk drives fails, information will be safe and stored on the second hard disk drive. Main advantages of RAID 1 arrays are:- Simple array assembly and implementation of its operation
- Relatively fast recovery procedure of RAID 1 in case one of the disks fails
- Fast response of array’s system when working with applications that have high frequency of requests
RAID 1 arrays are 100% redundant and as a result, cost per each unit of data volume is quite high. Also, RAID 1 is an array that is not designed for high speed data transfer and copy that is required to be done within very short period of time.
Despite relatively high reliability indicators of RAID 1 array, sometime it may have failures and malfunctions. Such issues appear due to a number of reasons:
- Controller failure
- Faulty actions of array system users
- Failure of many drives that are part of RAID 1 system
- Damaged logical disks of array
- Malfunction or sticking of head stack assembly of hard disk drive that are part of RAID 1 array
In case of problems with RAID 1 array, its recovery may be required, especially in case when paired disks of the array are damaged. When a malfunction of RAID 1 array is observed, first of all seek professional help, choose those that deal with RAID data recovery. RAID 1 recovery is a process that requires precise actions and the slightest violation of the process or unprofessional approach to the performance of the task may lead to the loss of data stored on RAID array.
RAID 1 recovery is done with the help of special equipment and programs that in some cases is being prepared to solve specific tasks. Data Retrieval performs professional recovery of RAID 1. Data Retrieval experts carefully organize the data recovery processes from RAID 1 arrays and are able to ensure timely solution of the problem.
If you need to have your data recovered safely, ask Data Retrieval experts.
