Synology DS220j Synology NAS Users Guide - Based on DSM 7.1 - Page 50

Snapshot Replication, 7.4 Synology High Availability, downloaded

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Chapter 7: NAS Protection Multiple data backup versions can be retained to keep important information handy and easy to track. Backup data are kept in an encrypted database that can be easily browsed, downloaded, or restored using Hyper Backup Explorer on DSM, Windows, Mac, and Linux platforms. To learn how to create a backup task in Hyper Backup, refer to this article. 7.3 Snapshot Replication Protect your NAS with schedulable and near-instantaneous snapshot and replication plans. A snapshot is the state of your NAS at a point in time. Compared to full backups, snapshots use minimum storage space and can be taken within seconds with the help of Btrfs. Recover your data using snapshots after accidental or malicious data loss or corruption. You can view earlier versions of files and restore them easily in File Station or Windows File Explorer. Automatically delete unneeded older snapshots and free up storage space by customizing a retention policy. If you have more than one Synology NAS that supports Snapshot Replication, you can replicate snapshots to a remote NAS to further secure your data. Configure replication schedules to regularly take snapshots of your share folders/LUNs and transfer snapshots to the other NAS. When the replication source is not accessible, you can perform a failover to ensure file access on the other NAS. Ensuring that you always have access to the data on your NAS is beneficial in preparing your disaster recovery plans. For more information on snapshot and replication, refer to this article. 7.4 Synology High Availability High Availability refers to a server layout solution designed to reduce interruptions of services caused by server malfunctions. With two Synology NAS, you can leverage Synology High Availability to establish a "high-availability cluster" where one server assumes the role of "active server" and the other acts as a standby "passive server". Using a real-time data mirroring mechanism, all the data stored on the active server are replicated to the passive server in real-time. This ensures all replicated data are quickly accessible after incidents of hardware failure, minimizing your service downtime. To learn how to set up a high-availability cluster, refer to this article. 47

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47
Chapter 7: NAS Protection
Multiple data backup versions can be retained to keep important information handy and
easy to track. Backup data are kept in an encrypted database that can be easily browsed,
downloaded, or restored using Hyper Backup Explorer on DSM, Windows, Mac, and Linux
platforms.
To learn how to create a backup task in Hyper Backup, refer to
this article
.
7.3 Snapshot Replication
Protect your NAS with schedulable and near-instantaneous snapshot and replication plans. A
snapshot is the state of your NAS at a point in time. Compared to full backups, snapshots use
minimum storage space and can be taken within seconds with the help of Btrfs. Recover your
data using snapshots after accidental or malicious data loss or corruption. You can view earlier
versions of files and restore them easily in File Station or Windows File Explorer. Automatically
delete unneeded older snapshots and free up storage space by customizing a retention policy.
If you have more than one Synology NAS that supports Snapshot Replication, you can replicate
snapshots to a remote NAS to further secure your data. Configure replication schedules to
regularly take snapshots of your share folders/LUNs and transfer snapshots to the other NAS.
When the replication source is not accessible, you can perform a failover to ensure file access
on the other NAS. Ensuring that you always have access to the data on your NAS is beneficial
in preparing your disaster recovery plans.
For more information on snapshot and replication, refer to
this article
.
7.4 Synology High Availability
High Availability refers to a server layout solution designed to reduce interruptions of services
caused by server malfunctions. With two Synology NAS, you can leverage Synology High
Availability to establish a "high-availability cluster" where one server assumes the role of
"active server" and the other acts as a standby "passive server".
Using a real-time data mirroring mechanism, all the data stored on the active server are
replicated to the passive server in real-time. This ensures all replicated data are quickly
accessible after incidents of hardware failure, minimizing your service downtime.
To learn how to set up a high-availability cluster, refer to
this article
.