2. Link Selection for Next Hop with LACP
1
2
3
4
Full path not established by initiators
1. Send. Server chooses links towards Storage
2. Send. Switch chooses links towards Storage
3. Resp. Storage chooses links towards Server
4. Resp. Switch chooses links towards Server
Each Next Step chosen individually
Path towards and backwards cold be different
3. 1x Shared Vol per st node =1x Network Folder. Each host loads each storage node
Ensure
Separate Links are used
Accessible by
Host 1 & 2
✔
Host Perspective
4. 1x Shared Vol per st node =1x Network Folder. Each host loads each storage node
Ensure
Separate Links are used
Accessible by
Host 1 & 2
✔
Storage Perspective
5. Not Ideal Network Load distribution. 1x Link used from host to storage node
Only 1 link used
Accessible by
Host 1 & 2
✗
Host Perspective
6. Not Ideal Network Load distribution. 1x Link used from storage node to host
Only 1 link used
Accessible by
Host 1 & 2
✗
Storage Perspective
7. If there no shared network folders between hosts than more volumes needed
Separate Links Used. Though in Real World
it doesn’t mean they are Equally loaded
No Shared Files between hosts
✔
IP1 IP1
Used Only by Host 2Used Only by Host 1 Storage Perspective
8. If there no shared network folders between hosts than more volumes needed
Separate Links Used. Though in Real World
it doesn’t mean they are Equally loaded
No Shared Files between hosts
✔
IP1 IP1
Used Only by Host 1
IP2 IP2
Used Only by Host 2 Host Perspective
9. 1xIP for a storage node & 4x non-Shared Vols: each link used by only 1 host traffic
No Shared Files between hosts
Just More volumes
Does not helps, same as 1 volume
✗
Only traffic between
1 host and 1 storage
Only traffic between
1 host and 1 storage
Used Only by Host 2Used Only by Host 1 Storage Perspective
10. 2x IP for a storage node & 4x non-Shared Vols: additional hop
No Shared Files between hosts
Additional hop, but more even load distribution
✗
Used Only by Host 2
More volumes & IP
Used Only by Host 1 Storage Perspective
11. Network Load distribution. 2x IP & 4x non-Shared Vol on each storage node
More volumes & IP – More probability
that each link will be fully & equally utilized
No Shared Files between hosts
Ensure Interconnect
Not used
✔
Each network file share
accessible through it’s IP
IP1 IP2 IP1 IP2
Used Only by Host 2Used Only by Host 1 Storage Perspective
12. 1x IP for a storage node 2x Shared Vols: each link used by only 1 host traffic
Just More volumes
Does not helps, same as 1 volume
Shared Files between hosts
Accessible by
Host 1 & 2
✗
Only traffic between
1 host and 1 storage
Only traffic between
1 host and 1 storage
Storage Perspective
13. 2x IP for a storage node & 2x Shared Vol: additional hop
Shared Files between hosts
Additional hop, but more even load distribution
Accessible by
Host 1 & 2
Visible to hosts as two
Network File Shares
✗
More volumes & IP
Storage Perspective
14. 2x Shared Vols = 2x network folders with 2x IP on each storage node
More volumes & IP – More probability
that each link will be fully & equally utilized
Shared Files between hosts
Ensure Interconnect
Not used
Accessible by
Host 1 & 2
Visible to hosts as two
Network File Shares
Each network file share
accessible through it’s IP
✔
IP1 IP2
Storage Perspective
15. 2x non-Shared Vols = 2x network folders with 2x IP on each storage node
More volumes & IP – More probability
that each link will be fully & equally utilized
No Shared Files between hosts
Ensure Interconnect
Not used
Each network file share
accessible through 2x IPs
✔
Used Only by Host 2
IP1& IP2
Used Only by Host 1 Storage Perspective
16. 2 network folders out of 1x shared Vol with 2x IP on each storage node
More volumes & IP – More probability
that each link will be fully & equally utilized
Shared Files between hosts
Ensure Interconnect
Not used
Visible to hosts as two
Network File Shares
Accessible by
Host 1 & 2
Network file share
accessible through 2x IPs
✔
IP1& IP2
Storage Perspective
17. Each link used by traffic from 1x host: 1x IP & 4x Shared Vols on each storage
Just More volumes
Does not helps, same as 1 volume
Shared Files between hosts
Only 1 storage node traffic
Only 1 host traffic
Visible to hosts as 4
Network File Shares
Accessible by
Host 1 & 2
✗
IP1
Storage Perspective
18. Additional hop: 2x IP & 4x Shared Vols on each storage node
Shared Files between hosts
Additional hop, but more even load distribution
Visible to hosts as 4
Network File Shares
Accessible by
Host 1 & 2
✗
More volumes & IP
Storage Perspective
19. Network Load distribution. 2x IP & 4x Shared Vols on each storage node
More volumes & IP – More probability
that each link will be fully & equally utilized
Shared or not Shared
Files between hosts
Ensure Interconnect
Not used
Visible to hosts as 4
Network File Shares
Accessible by
Host 1 & 2
✔
Half of the network file shares
accessible through each IP
IP1 IP2
Storage Perspective
