![]() ![]() Hint: All the basic RAID concepts are described in the peculiarities of data organization on RAID. SHR composed of 3 or more drives is similar to RAID 5 SHR consisting of 2 drives corresponds to RAID 1 SHR protects the array from a single drive failure while SHR 2 – from two simultaneous disk failures.īasically, we can draw the following parallel between SHR and traditional RAID levels: Two major options are available: SHR and SHR 2. ![]() Unlike RAID, SHR doesn’t have so many variations. Based on the combination of Linux mdadm and LVM, this data allocation scheme offers for more automated storage management, improved scalability and allows mixing drives of different capacities in one NAS box while practically all available space can be effectively used for keeping data. SHR was released in March 2010 together with DiskStation Manager 2.3 and is now supported in most Synology NAS models. Synology Hybrid RAID or simply SHR is an alternative vendor-specific method of redundancy designed to combine a number of Synology NAS drives into a single logical unit with the aim to protect the device against data loss caused by disk failure while overcoming considerable limitations of classical RAID, among which is total lack of flexibility and rather complicated setup. Data recovery process: recommendations and precautions. ![]()
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