- Community Home
- >
- Storage
- >
- Midrange and Enterprise Storage
- >
- HPE EVA Storage
- >
- Re: Single SAN Switch at DR site with Continuous A...
HPE EVA Storage
1753518
Members
5093
Online
108795
Solutions
Forums
Categories
Company
Local Language
юдл
back
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
юдл
back
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Blogs
Information
Community
Resources
Community Language
Language
Forums
Blogs
Go to solution
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО06-12-2009 08:25 AM
тАО06-12-2009 08:25 AM
Hi all,
There is a proposal.
We have Primary site with EVA and 2 SAN Switches, and DR site with EVA. We want the EVAs to mirror data using CA. But due to cost savings, we plan for a single Switch(though I am aware it doesn't cost much compared to EVA and other equipment) at DR.
I am of assumption that Technically and logically, there shouldn't be any Performance or availability issue due to Single switch with CA (when every equipment is working fine). I wanted to know if my assumption is correct?
There is a proposal.
We have Primary site with EVA and 2 SAN Switches, and DR site with EVA. We want the EVAs to mirror data using CA. But due to cost savings, we plan for a single Switch(though I am aware it doesn't cost much compared to EVA and other equipment) at DR.
I am of assumption that Technically and logically, there shouldn't be any Performance or availability issue due to Single switch with CA (when every equipment is working fine). I wanted to know if my assumption is correct?
Solved! Go to Solution.
3 REPLIES 3
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО06-12-2009 08:54 AM
тАО06-12-2009 08:54 AM
Solution
First question is... What model SAN Switches are being proposed?
Some issues you will have:
1. CA traffic will be limited to only 2 ports on either EVA, limiting host access at the dr site.
2. Non-redundant configuration at the dr site
3. Will the single link between the sites support your replication traffic?
Steven
Some issues you will have:
1. CA traffic will be limited to only 2 ports on either EVA, limiting host access at the dr site.
2. Non-redundant configuration at the dr site
3. Will the single link between the sites support your replication traffic?
Steven
Steven Clementi
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО06-13-2009 12:20 PM
тАО06-13-2009 12:20 PM
Re: Single SAN Switch at DR site with Continuous Access
Thanks Stevan for the quick reply.
We are aware of all the 3 points and we know its not the best practice and we are ready for it.
I am specially interested in if any kind of Data inconsistancies would arise? Will CA work with the proposed setup without issues?
In fact, in case of Catostrophic disaster at Primary site, the DR is expected to work at 50% efficiency/availability of the primary.
Regards,
Ram.
We are aware of all the 3 points and we know its not the best practice and we are ready for it.
I am specially interested in if any kind of Data inconsistancies would arise? Will CA work with the proposed setup without issues?
In fact, in case of Catostrophic disaster at Primary site, the DR is expected to work at 50% efficiency/availability of the primary.
Regards,
Ram.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО06-14-2009 06:37 AM
тАО06-14-2009 06:37 AM
Re: Single SAN Switch at DR site with Continuous Access
Hi Ramaprasad,
We manage a number of EVAs across our two sites (with CA replication) - based on this experience, a couple of points:
1. If you look at the cost of a SAN switch in the context of cost of multiple EVAs, CA license cost itself, etc, its not much! So, in all honesty, having multiple switches even at your DR site would provide an additional layer of redundancy + traffic load balancing.
2. Which EVAs do you have at your DR site - I don't have the exact details at the moment but some EVA models with certain XCS code had some issues with attaching all their controller host ports to the same SAN switch and required them to be spread across multiple SAN switches.
3. Apart from points 1 & 2, so long as the correct port routing, IOD fab parameters are in place - CA should work fine.
Let me know if you need more info.
We manage a number of EVAs across our two sites (with CA replication) - based on this experience, a couple of points:
1. If you look at the cost of a SAN switch in the context of cost of multiple EVAs, CA license cost itself, etc, its not much! So, in all honesty, having multiple switches even at your DR site would provide an additional layer of redundancy + traffic load balancing.
2. Which EVAs do you have at your DR site - I don't have the exact details at the moment but some EVA models with certain XCS code had some issues with attaching all their controller host ports to the same SAN switch and required them to be spread across multiple SAN switches.
3. Apart from points 1 & 2, so long as the correct port routing, IOD fab parameters are in place - CA should work fine.
Let me know if you need more info.
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
News and Events
Support
© Copyright 2024 Hewlett Packard Enterprise Development LP