There are two forms of RAID 1: disk duplexing and disk mirroring. Disk mirroring involves two hard drives that are on the same drive controller. The same...
Disk mirroring is the replication of data on separate disks in real time to ensure continuous availability, currency and accuracy. Disk mirroring can function as a disaster recovery solution by performing the mirroring remotely and over distance. Depending on the technologies used, mirroring can be performed Synchronously, Asynchronously, Semi-synchronously, or point-in-time. True synchronous mirroring can achieve a Recovery Point Objective of zero lost data. Asynchronous mirroring can achieve a Recovery Point Objective of just a few seconds while the remaining methodologies provide a Recovery Point Objective of a few minutes to perhaps several hours. Related terms: data mirroring, data replication, file shadowing, journaling.
Disk Mirroring protects data against hardware failure. In its simplest form, a two disk subsystem would be attached to a host controller. One disk serves as the mirror image of the other. When data is written to it is also written to the other. Both disks will contain exactly the same information. If one fails, the other can supply the user data without problem.
Disk mirroring is the duplication of data on separate disks in real time to ensure its continuous availability, currency and accuracy. Disk mirroring can function as a disaster recovery solution by performing the mirroring remotely. True mirroring will enable a zero recovery point objective. Depending on the technologies used, mirroring can be performed synchronously, asynchronously, semi-synchronously, or point-in-time. SIMILAR TERMS: File Shadowing, Data Replication, Journaling.
Using two or more disks in the server that are updated simultaneously with network data, so that both disks contain identical copies of all network files. This ensures that data is safe and accessible even if one disk goes down. If one disk fails, the other continues to operate normally. If the mirrored disks are using the same disk controller board, it's called disk mirroring. If mirrored disks are using separate disk controller boards, it's called disk duplexing. Disk duplexing provides more security than disk mirroring because it duplicates not just the disk, but also the controller channel (which includes the controller board and cables) as well. See also Disk duplexing.
the procedure of duplicating data written to two identical hard drives, where both hard drives are connected to one disk controller card. If one hard drive fails, then the data can be retrieved from the second hard drive.
Disk mirroring is the process of duplicating the data onto another drive (RAID 1) or set of drives (in RAID 10), so that if a drive fails, the other drive has the same data and no data is lost.
data protection by duplication on disk drives.
Replication and duplication of data on separate disks in real time to ensure its continuous availability, currency and accuracy. Addresses risk of disk failure to prevent shutdown and loss of data.
Disk mirroring provides the highest data availability for mission-critical applications by creating two copies of data on separate disk drives. The technique ensures both the highest availability and highest system performance.
When files are stored on a computer system's hard disk, a "mirror" copy is made on an additional hard disk or a separate part of the same disk to safeguard information in the case of a disaster.
The duplication of disks and controllers so that two access paths exist in case a failure occurs on one of them.
Writing duplicate data to more than one (usually two) hard disks to protect against data loss in the event of device failure. Disk mirroring is a common feature of RAID systems.
In data storage, disk mirroring (which is different from file shadowing) is the replication of logical disk volumes onto separate logical disk volumes in real time to ensure continuous availability, currency and accuracy. A mirrored volume is a complete and separate copy of a logical disk volume. Disk mirroring can function as a Disaster Recovery solution by performing the mirroring remotely and over distance.