Synology RS3621xs Synology MailPlus Server Administrator s Guide - Based on Ma - Page 133

Assign two sets of static IP addresses for the primary and secondary servers

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Chapter 11: Disaster Recovery Note: • The size of the volumes on which MailPlus Server is located should be the same. In addition, since all inbound and outbound emails will be fully synchronized to both volumes, please make sure the volume size can meet the email storage requirement. • If you have mounted SSD caches on both volumes, please note the following: • They should be read-write caches in a RAID 1 configuration. • The cache size should be the same. • The 2-step verification feature must be temporarily disabled on the secondary server during the HA cluster creation. • It is recommended that both DSM volumes are the same size and have sufficient space because all emails will be fully synchronized and stored on both machines. • It is recommended to keep the default permission settings for the MailPlus shared folder. When the MailPlus shared folder is created, it will automatically set the permissions when MailPlus Server is installed. • If SSD cache is installed on both volumes, it is recommended that both configurations are the same when building RAID1 for R/W cache. 2. Assign two sets of static IP addresses for the primary and secondary servers: • The IP addresses for both Synology NAS must be under the same LAN. • The IP addresses must not be retrieved via PPPoE or DHCP. • The network card of the IP address should be set up to perform manual network configuration. 3. Both Synology NAS must join the same domain: • Both Synology NAS must join a Windows Active Directory or an LDAP server. For information on how to join a Windows Active Directory, please refer to this tutorial. For more information on how to join an LDAP server, please refer to this help article. 130

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130
Chapter 11: Disaster Recovery
Note:
• The size of the volumes on which MailPlus Server is located should be the same. In
addition, since all inbound and outbound emails will be fully synchronized to both
volumes, please make sure the volume size can meet the email storage requirement.
• If you have mounted SSD caches on both volumes, please note the following:
• They should be read-write caches in a RAID 1 configuration.
• The cache size should be the same.
• The 2-step verification feature must be temporarily disabled on the secondary server
during the HA cluster creation.
• It is recommended that both DSM volumes are the same size and have sufficient space
because all emails will be fully synchronized and stored on both machines.
• It is recommended to keep the default permission settings for the MailPlus shared folder.
When the MailPlus shared folder is created, it will automatically set the permissions when
MailPlus Server is installed.
• If SSD cache is installed on both volumes, it is recommended that both configurations are
the same when building RAID1 for R/W cache.
2.
Assign two sets of static IP addresses for the primary and secondary servers
:
• The IP addresses for both Synology NAS must be under the same LAN.
• The IP addresses must not be retrieved via PPPoE or DHCP.
• The network card of the IP address should be set up to perform manual network
configuration.
3.
Both Synology NAS must join the same domain
:
• Both Synology NAS must join a Windows Active Directory or an LDAP server. For
information on how to join a Windows Active Directory, please refer to
this tutorial
. For
more information on how to join an LDAP server, please refer to
this help article
.