Bandwidth Requirements for the different Subnets
fx882
17 Posts
September 12, 2017, 3:28 pmQuote from fx882 on September 12, 2017, 3:28 pmHi,
in the Quick Start Guide there is the requirement to configure 5 different Subnets:
- iSCSI-1
- iSCSI-2
- Backend 1
- Backend 2
- Management
I'm planning to have a cluster with 10 Gb/s for the main storage traffic.
What about the needed Bandwidth for those subnets? I assume iSCSI-1/2 obviously need maximum Speed. Also clear seems to me, that management can probable do comfortably with even 10 Mbit/s(only to take it to the extremes for clarity). But what about Backend-1/2. Do they need maximum Speed to?
Hi,
in the Quick Start Guide there is the requirement to configure 5 different Subnets:
- iSCSI-1
- iSCSI-2
- Backend 1
- Backend 2
- Management
I'm planning to have a cluster with 10 Gb/s for the main storage traffic.
What about the needed Bandwidth for those subnets? I assume iSCSI-1/2 obviously need maximum Speed. Also clear seems to me, that management can probable do comfortably with even 10 Mbit/s(only to take it to the extremes for clarity). But what about Backend-1/2. Do they need maximum Speed to?
admin
2,930 Posts
September 12, 2017, 4:35 pmQuote from admin on September 12, 2017, 4:35 pmiSCSI 1/2 : traffic from client to iSCSI service
Bachend 1: traffic from iSCSI service to Ceph storage ( this is the Ceph public/client network )
Backend 2: internal Ceph traffic for replication and recovery ( Ceph private network )
so Backend 1 carries the traffic of iSCSI 1 and 2 combined.
Backend 2: If replica count is 2 then it will carry the same write traffic as Backend 1, if replica count is 3 it carries 2x write traffic. It also carries the traffic in case of recovery and re balancing when disks die or are added.
In normal traffic, backend 1 is most loaded.
iSCSI 1/2 : traffic from client to iSCSI service
Bachend 1: traffic from iSCSI service to Ceph storage ( this is the Ceph public/client network )
Backend 2: internal Ceph traffic for replication and recovery ( Ceph private network )
so Backend 1 carries the traffic of iSCSI 1 and 2 combined.
Backend 2: If replica count is 2 then it will carry the same write traffic as Backend 1, if replica count is 3 it carries 2x write traffic. It also carries the traffic in case of recovery and re balancing when disks die or are added.
In normal traffic, backend 1 is most loaded.
fx882
17 Posts
September 13, 2017, 9:40 amQuote from fx882 on September 13, 2017, 9:40 amThanks a lot!
Thanks a lot!
Bandwidth Requirements for the different Subnets
fx882
17 Posts
Quote from fx882 on September 12, 2017, 3:28 pmHi,
in the Quick Start Guide there is the requirement to configure 5 different Subnets:
- iSCSI-1
- iSCSI-2
- Backend 1
- Backend 2
- Management
I'm planning to have a cluster with 10 Gb/s for the main storage traffic.
What about the needed Bandwidth for those subnets? I assume iSCSI-1/2 obviously need maximum Speed. Also clear seems to me, that management can probable do comfortably with even 10 Mbit/s(only to take it to the extremes for clarity). But what about Backend-1/2. Do they need maximum Speed to?
Hi,
in the Quick Start Guide there is the requirement to configure 5 different Subnets:
- iSCSI-1
- iSCSI-2
- Backend 1
- Backend 2
- Management
I'm planning to have a cluster with 10 Gb/s for the main storage traffic.
What about the needed Bandwidth for those subnets? I assume iSCSI-1/2 obviously need maximum Speed. Also clear seems to me, that management can probable do comfortably with even 10 Mbit/s(only to take it to the extremes for clarity). But what about Backend-1/2. Do they need maximum Speed to?
admin
2,930 Posts
Quote from admin on September 12, 2017, 4:35 pmiSCSI 1/2 : traffic from client to iSCSI service
Bachend 1: traffic from iSCSI service to Ceph storage ( this is the Ceph public/client network )
Backend 2: internal Ceph traffic for replication and recovery ( Ceph private network )
so Backend 1 carries the traffic of iSCSI 1 and 2 combined.
Backend 2: If replica count is 2 then it will carry the same write traffic as Backend 1, if replica count is 3 it carries 2x write traffic. It also carries the traffic in case of recovery and re balancing when disks die or are added.
In normal traffic, backend 1 is most loaded.
iSCSI 1/2 : traffic from client to iSCSI service
Bachend 1: traffic from iSCSI service to Ceph storage ( this is the Ceph public/client network )
Backend 2: internal Ceph traffic for replication and recovery ( Ceph private network )
so Backend 1 carries the traffic of iSCSI 1 and 2 combined.
Backend 2: If replica count is 2 then it will carry the same write traffic as Backend 1, if replica count is 3 it carries 2x write traffic. It also carries the traffic in case of recovery and re balancing when disks die or are added.
In normal traffic, backend 1 is most loaded.
fx882
17 Posts
Quote from fx882 on September 13, 2017, 9:40 amThanks a lot!
Thanks a lot!