7/23/2023 0 Comments Synology volume manager![]() Or you might install services and applications from Synology packages on a specific Volume separated from other data. ![]() You do not necessarily have to create separate Storage Pools for each Volume, but you could.įor example, you have all the user home folders on one Volume and all Shared Folders on the other. You can store different kinds of data on different Volumes for a better overview. Let us now look at some decisions you could make when designing Storage Pools and Volumes in a Synology DiskStation. This makes using Volumes on Synology NAS even more flexible. From DSM 7.1 this is expanded to up to eight Volumes on the same Storage Pool. Up to DSM 7.0.1, you can assign your cache to a single Volume only. For NAS models that support an SSD cache, it is good to know that a cache is assigned per Volume. A cache is beneficial for repeated access to the same information. To speed up read and write access to your HD drives, you can use an SSD cache. On the other hand, you might create a separate Volume with EXT4 for applications like Surveillance Station or a website. For a detailed explanation about quota, please reference Using quota on Synology NAS. As a result, where quotas are concerned, you could be more inclined to create multiple Volumes with the EXT4 file system. For example, with the EXT4 file system, a quota is only enforced per Volume, not per Shared Folder, as is the case with Btrfs. The graph above highlights some of the differences. The Btrfs file system is more versatile, whereas EXT4 gives higher performance. Some – typically basic models – support EXT4 only. Most Synology NAS models let you choose between Btrfs and EXT4. When using Volumes on Synology NAS it is important to understand the different formats of a Volume. Note that there are a few packages that do not offer Volume selection. When you install a package, create a shared folder, or enable the user Home Service, you can select a Volume if more than one exists on your NAS. DSM or DiskStation Manager is the operating system of your Synology DiskStation. ![]() There are (at least) three features of DSM related to using Volumes on Synology NAS. Note that some DiskStaton models only support EXT4 as a file system. On a Synology DiskStation, you can choose between the basic EXT4 and the more advanced Btrfs file system. Older and some recent base models have a 16TB limit, and for other models, the limit is 108TB up to 200TB. However, SHR is Synology’s own implementation of RAID.Ī Volume is limited in size. The terms RAID and SHR (Synology Hybrid RAID) are often used randomly. You can have multiple Volumes on the same Storage Pool or create separate Storage Pools with their Volume. On a Storage Pool, you create one or more Volumes. The RAID or SHR level of the Storage Pool determines the kind of redundancy of that pool and, as a result for every Volume on that pool. On each Storage Pool, you create one or more Volumes. Your DiskStation combines disks into one or more Storage Pools. What is the purpose of having multiple Volumes on your Synology NAS? Before we dig into this, let’s determine a few facts on how a DiskStation handles Volumes. The Storage Manager is one of the default applications on your NAS and a very powerful tool that gives you all the necessary information about the configuration and health of your disks, pools, and volumes. You can review all these items on your own Synology NAS with the Storage Manager. On the Storage Pool, there is one Volume, occupying the entire space of the pool. ![]() This means that there is a fault tolerance for one disk, hence one red star at the right in the Storage Pool. In the graphic above you see four disks connected in a single Storage Pool as RAID5. However, there are other options where you create more Volumes and optionally separate Storage Pools. When you install a Synology NAS for the first time and skip custom options, the process will combine all disks into a single Storage Pool and use that entire pool for a single Volume. If you have multiple disks connected in a single Storage Pool, you will create redundancy or fault tolerance. What are the benefits? In this post, I collect the reasons to consider creating multiple Volumes or Storage Pools. You can create separate Volumes on your Synology DiskStation. ![]()
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