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EqualLogic SAN Replication


We have a Production Server site and a DR server site (Physically 2 different locations). At each site I have an Equalogic PS6000 SAN Groups (2 SANs at each site). The groups are connected via ISCSi VLANs at each site (2 ISCSI VLANs). Both sites are linked as part of our WAN (managed by a provider), but the VLAN's obviously do not connect to the WAN. I want to perform 2 way replication across the networks between the 2 SANs Our Production site is running fine and the DR site is ready to begin replication.

I have only just realised now that I have missed a major part of the project. And not quite sure of the best way to configure the link between the  2 ISCSi VLANs.  
What's the best way to connect the iSCSI traffic between the 2 VLANs?

If you could talk me through what I need to do to accomplish my outcome. The routers at both sites are Cisco (but managed by a 3rd Party). The ISCSi switches are Dell PowerConnect 6224 and the LAN switches are as follows:
Production Site - Dell Powerconnect 6248
DR Site - Linksys SRW2048
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Mayogroup
Asked:
Mayogroup
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1 Solution
 
CWCertus1Commented:
Is your default gateway the ISP Cisco router or is there another device between your Switch and their router?
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MayogroupAuthor Commented:
Router is the gateway.
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CWCertus1Commented:
In that case, they should handle this for you. Being as this is the only link between your two sites.

Make sure that your iSCSI VLAN can get to the router. Your powerconnect switch is a Layer 2 so cannot do routing in which case you may need to request a new interface on their router and connect it to your iSCSI VLAN on the powerconnect.

The access to the iSCSI VLAN can be locked down on the router (by request to the ISP).
The Default Gateway of the iSCSI interfaces on the Equallogic would need to be set to the Cisco router.
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MayogroupAuthor Commented:
That sounds straight forward. Much appreciated.
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CWCertus1Commented:
No worries, came across the same issue recently.

Let me know how you get on.
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MayogroupAuthor Commented:
Might take a while. Our WAN supplier (Australia's largest Telco which I will not name) can take up to 3 months to complete complex WAN requests. Lets hope it does not take this long to complete this one.
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madunixChief Information Security Officer Commented:
Implement your core system (DB/Apps) on a SAN-SAN replica and via LUN copying have online replication from Prod site to DR site via dark fiber or Giga media or high speed (depends on your traffic).  Check all vendors for replication method:

- EMC Symmetrix Remote Data Facility (SRDF) for both synchronous and asynchronous replication, and EMC MirrorView for synchronous and asynchronous replication of Clariion systems.

- Hitachi Data Systems TrueCopy for synchronous replication and Hitachi Data Systems Universal Replicator software for asynchronous replication.

-HP StorageWorks XP Continuous Access and Continuous Access EVA for both synchronous and asynchronous replication for HP XP and EVA arrays.
- IBM  Metro Mirror for synchronous replication and IBM Global Mirror for asynchronous replication.

- NetApp SnapMirror for synchronous and asynchronous block-based replication, and NetApp SnapVault for file-based replication.

I do Metro Mirror / Global Mirror and MGM from IBM.
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madunixChief Information Security Officer Commented:
sorry it was wrong window!
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