Comprehensive data protection for all workloads
Post Reply
b.stromberg
Novice
Posts: 9
Liked: 1 time
Joined: Dec 08, 2010 9:16 am
Full Name: Björn Stromberg
Contact:

Replication SAN-2-SAN wihtout LAN?

Post by b.stromberg »

Hello :-)

I just *love* this forum, thanks for all the answers.

I simply want to replicate my vsphere5 machines from one SAN to another via FC.
- The only b&r (6.1) machine does have SAN-Access (FC) to both storages (source and destination) and LAN access to the cluster
- The hosts in the cluster do have SAN access to both storages, too
- The B&R-machines (LAN) route to the vcenter is somewhat sluggish, but the FC interconnect is fast and reliable

How do I accomplish a SAN-to-SAN replication without (or with minimal) use of the LAN? Whenever I set up a replication, the data flows through the LAN-Port ... what am I doing wrong? I do not need a history in the first place, just a 1:1 replication of my source vm's.
Vitaliy S.
VP, Product Management
Posts: 27055
Liked: 2710 times
Joined: Mar 30, 2009 9:13 am
Full Name: Vitaliy Safarov
Contact:

Re: Replication SAN-2-SAN wihtout LAN?

Post by Vitaliy S. »

Hi Björn,

Basically there are two ways of achieving what you want:

1. Install backup proxy on the physical machine and present your SAN LUNs via FC. This will allow you to retrieve source VM data through the storage stack directly. As regards writing VM data to the target host, then the most efficient way to do that (avoiding network stack) is to use any VM as a target backup proxy. Make sure that ESX(i) server which will be hosting this proxy VM has access to your target SAN. In this case all the traffic will be written via HotAdd mode (directly to your storage).

This approach will allow you to minimize network traffic, but will not eliminate the need in the network connection completely, since VM data will be transferred through the LAN between your proxy servers.

2. As a second variant, you may want to setup a single virtual backup proxy which should be hosted on the ESX(i) server which in turn should have access to both SANs. Here is an existing topic with more information about this setup: Several Virtual Veeam Servers on same subnet

Hope this helps!
b.stromberg
Novice
Posts: 9
Liked: 1 time
Joined: Dec 08, 2010 9:16 am
Full Name: Björn Stromberg
Contact:

Re: Replication SAN-2-SAN wihtout LAN?

Post by b.stromberg »

Do I really need 2 (proxy) machines to do this?
Vitaliy S.
VP, Product Management
Posts: 27055
Liked: 2710 times
Joined: Mar 30, 2009 9:13 am
Full Name: Vitaliy Safarov
Contact:

Re: Replication SAN-2-SAN wihtout LAN?

Post by Vitaliy S. »

For the second variant you only need one. As to the first scenario, then since direct SAN access (FC) is only possible with physical proxy, you need to have a second proxy (VM) to write data through the HotAdd.
b.stromberg
Novice
Posts: 9
Liked: 1 time
Joined: Dec 08, 2010 9:16 am
Full Name: Björn Stromberg
Contact:

Re: Replication SAN-2-SAN wihtout LAN?

Post by b.stromberg »

sounds weird :-)
My physical B&R machine does have SAN access to both storages, but I have to install another virtual one in my cluster (all hosts there do have SAN access to both Storages) to replicate via the physical B&R.

However, thank for the article, I will give this a try. Variant 2 sounds more logical to me, since I do not want to write to an extra-host (I just want to write into an datastore) and every machine does have access to both storages.

Thank you!
foggy
Veeam Software
Posts: 21069
Liked: 2115 times
Joined: Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson
Contact:

Re: Replication SAN-2-SAN wihtout LAN?

Post by foggy »

b.stromberg wrote:sounds weird :-)
My physical B&R machine does have SAN access to both storages, but I have to install another virtual one in my cluster (all hosts there do have SAN access to both Storages) to replicate via the physical B&R.
This is because direct SAN restores are not possible.
Post Reply

Who is online

Users browsing this forum: Ivan239 and 240 guests