# Multiple paths in an active-backup-like manner

**URL:** <https://forums.linbit.com/t/multiple-paths-in-an-active-backup-like-manner/642>\
**Category:** General\
**Tags:** drbd\
**Created:** [February 21, 2025, 10:42am UTC](https://forums.linbit.com/t/multiple-paths-in-an-active-backup-like-manner/642 "2025-02-21T10:42:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Anton](https://avatars.discourse-cdn.com/v4/letter/a/d9b06d/32.png) [@Anton](https://forums.linbit.com/u/Anton)\
**Post date:** [February 21, 2025, 10:42am UTC](https://forums.linbit.com/t/multiple-paths-in-an-active-backup-like-manner/642/1 "2025-02-21T10:42:50Z")

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From the link

> **[Load Balanced Replication with DRBD](https://linbit.com/blog/load-balanced-replication-with-drbd/)**
>
> Along with the ability to encrypt replication traffic, DRBD® version 9.2.6 gives you the ability to load balance replication traffic across multiple TCP sockets1. You can see a demo of the load balancing feature from LINBIT® founder and CEO...

> DRBD version 9 has supported replicating data over [multiple paths](https://linbit.com/drbd-user-guide/drbd-guide-9_0-en/#s-multiple-paths) in an active-backup-like manner since its inception. With multiple paths configured, users can ensure that any single point of failure (SPOF) in a network path is mitigated by adding a second separate path for DRBD to use should the other fail.

> **TIP:** If you’re only interested in resilience, leaving `load-balance-paths` disabled will result in DRBD only using one path at a time instead of load balancing replicated writes across all configured paths.

It doesn’t work.

if one path failed, another path not working and drbdadm status shows

[root@memverge ~]# drbdadm status  
ha-nfs role:Secondary  
volume:29 disk:UpToDate  
volume:30 disk:UpToDate  
memverge2 connection:Connecting

Anton

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**Author:** ![kermat](https://yyz1.discourse-cdn.com/flex003/user_avatar/forums.linbit.com/kermat/32/21_2.png) [@kermat](https://forums.linbit.com/u/kermat)\
**Post date:** [February 24, 2025, 2:47pm UTC](https://forums.linbit.com/t/multiple-paths-in-an-active-backup-like-manner/642/2 "2025-02-24T14:47:00Z")

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This is a redundant post. Please do not duplicate threads. Will reply (eventually) in the original thread:

> [@DRBD failover TCP links?](https://forums.linbit.com/t/drbd-failover-tcp-links/625):
>
> Hi There are two links for sync TCP DRBD replication. from \*.res file connection { path { host "memverge" address ipv4 192.168.0.6:7900; host "memverge2" address ipv4 192.168.0.8:7900; } path { host "memverge" address ipv4 1.1.1.6:7900; host "memverge2" address ipv4 1.1.1.8:7900; } net { # load-balance-paths yes; transport tcp; protocol C; sndbuf-size 10M…

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**Author:** ![kermat](https://yyz1.discourse-cdn.com/flex003/user_avatar/forums.linbit.com/kermat/32/21_2.png) [@kermat](https://forums.linbit.com/u/kermat)\
**Post date:** [February 24, 2025, 2:47pm UTC](https://forums.linbit.com/t/multiple-paths-in-an-active-backup-like-manner/642/3 "2025-02-24T14:47:29Z")

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Closed on February 24, 2025, 2:47pm UTC