Storage Alternatives

Standard partition layouts on storage devices do have their limitations. Once you create and format a partition, it’s not easy making it larger or smaller. Individual partitions are also susceptible to disk failures, in which case all of the data stored in the partition will be lost.

To accommodate more dynamic storage options, as well as fault-tolerance features, Linux has incorporated a few advanced storage management techniques. This section covers three of the more popular techniques you’ll run into.

Multipath

The Linux kernel now supports Device Mapper Multipathing (DM-multipathing), which allows you to configure multiple paths between the Linux system and storage devices. With Multipathing the kernel can either combine ...

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