Synology SA3200D Synology High Availability SHA User Guide for DSM 7.0 - Page 14
Create a cluster with a Synology NAS in use, Synology Assistant, Synology High Availability
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Chapter 3: Set Up and Configure an SHA Cluster Notes: • You can use Synology Assistant to check the status of the cluster by searching for your Synology NAS. You can only see the cluster Hostname and cluster IP address after the cluster is created. • You can access shared folders and services via cluster Hostname or cluster IP address. • Once the cluster is created, the passive server will no longer actively provide services, but will remain in standby mode. • You can manage the cluster in Synology High Availability. Refer to Chapter 4: Navigate the SHA User Interface for more information. Create a cluster with a Synology NAS in use This section explains the process of creating a high-availability cluster with a Synology NAS that you're already using. For example, you already have a Synology DS1621+. After the device has been used for a period of time, you purchase another brand new DS1621+ to create a high-availability cluster. The process of creating a high-availability cluster with Synology NAS in use is mostly the same as creating a cluster with two new Synology NAS. However, there are a few key differences to keep in mind: 1. Make sure that the existing environment meets the requirements as defined in Chapter 2: Required environment. 2. Synology High Availability does not support Synology NAS implemented with SHR (Synology Hybrid RAID). If you have already set up SHR on your existing Synology NAS, make sure to remove the SHR storage pool before you proceed to create a high-availability cluster. The RAID type of SHR storage pools cannot be changed directly to other non-SHR RAID types. Follow the steps below to back up the data, create a new storage pool of other RAID types, and then restore the data on the new storage pool. a. Back up the storage pool. Refer to this article for instructions. b. Go to Storage Manager > Storage and select the SHR storage pool you want to remove. c. Click Remove. d. Create a new storage pool and select a non-SHR RAID type. Refer to the respective help articles for DSM 7.0 and DSM 6.2 for instructions. e. Create one or more new volumes. Refer to the respective help articles for DSM 7.0 and DSM 6.2 for instructions. f. Restore the backed-up data to the newly created storage pool and volume. Refer to this article for instructions. 12