DISC MIRRORING: WINDOWS 7, 8, 10
In data storage, disk mirroring is the replication of logical disk volumes onto separate physical hard disks in real time to ensure continuous availability. It is most commonly used in RAID 1. A mirrored volume is a complete logical representation of separate volume copies.
In a disaster recovery context, mirroring data over long distance is referred to as storage replication. Depending on the technologies used, replication can be performed synchronously, asynchronously, semi-synchronously, or point-in-time. Replication is enabled via microcode on the disk array controller or via server software. It is typically a proprietary solution, not compatible between various storage vendors.
Mirroring is typically only synchronous. Synchronous writing typically achieves a recovery point objective (RPO) of zero lost data. Asynchronous replication can achieve an RPO of just a few seconds while the remaining methodologies provide an RPO of a few minutes to perhaps several hours.
Disk mirroring differs from file shadowing that operates on the file level, and disk snapshots where data images are never re-synced with their origins.
Windows 7’s mirroring – which is only available in Professional, Enterprise, and Ultimate editions – is a software implementation of RAID 1, which means that two or more disks are holding the exact same data. The files are constantly kept in sync, so that if one of the disks fails, you won’t lose any data.
Storage Spaces is a new feature in Windows 8 and Windows 10 that can combine multiple hard drives into a single virtual drive. It can mirror data across multiple drives for redundancy or combine multiple physical drives into a single pool of storage.
SIMULATED FAILURE AND RECOVERY
Setup your mirror.
Unplug the primary drive
Set the new drive as Primary either by connecting to port 1 on your motherboard or through BIOS settings (depends on the mother board).
Drive should boot with message- If this is the secondary drive when you made the array you would choose “Windows 7 – secondary plex (C:\Windows)” as your boot option (choosing the other one will tell you that you are missing hardware…it means drive one of the array doesn’t exist
That should do it
How to remove message
Click Start and type MSCONFIG into the “Search programs and files” box and hit Enter
Go to the Boot tab
Set “Windows 7 – secondary plex (C:\Windows)” as the default
reboot and thats it
I did not go into details on storage space testing… the basics of that is covered in the 3 part series listed above….