With the Windows “Storage Spaces” function, you can protect your data from drive errors and expand the total storage space by adding more drives. This allows several drives to be combined into a storage pool.
With the option “Manage storage space” you can create raids or storage pools.
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In the Settings app you will find the function “Manage storage locations” under “System -› Storage ”. This allows you to combine several partitions into one large drive or, alternatively, set up a software raid in which the data on one partition is mirrored, i.e. duplicated, on one or more other drives. If a hard drive fails, the data is not lost.
That’s how it’s done:
To set up, click on “Create new pool and storage space”, Windows 10 will then display the possible drives. Put two ticks and click on “Create pool”. In the next window, give the new drive a name, assign a drive letter and choose a resilience type: “Simple (no resilience)” means that two partitions on two disks are combined into one large drive. The “two-way mirroring” describes the mirroring of the content from one disk to the second. “Three-way mirroring” writes three copies of the data to compensate for the failure of two hard drives. This method requires five drives. “Parity” does not duplicate data, but works with parity information in order to be able to restore the data after a hard drive failure. You need three drives for this. The advantage over two-way mirroring is the higher storage capacity.
In addition to internal hard drives, Windows also supports USB storage devices as drives. The use of USB sticks is only possible if they log in as DRIVE_FIXED. Most sticks, however, are marked as DRIVE_REMOVABLE and are therefore out of the question for a storage pool.
With the “Manage storage space” function, you create storage pools in Windows that either combine several partitions or mirror data on other drives.
Note that your storage pool is only ever as fast as the slowest device. An old mechanical hard drive slows him down a lot. And: If you combine two differently sized data carriers to form a mirror, the maximum usable space is always only as large as the smaller of the two. Access to the rest of the larger disk is not possible.
It is best to always install new disks in pairs on your computer to create a storage pool. If, on the other hand, you want to mirror an existing partition on a new disk, you must save the data on another medium before setting up the pool.
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