- Community Home
- >
- Servers and Operating Systems
- >
- Integrity Servers
- >
- Re: npars failover
Categories
Company
Local Language
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
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
Community
Resources
Forums
Blogs
- 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
тАО07-28-2006 03:20 AM
тАО07-28-2006 03:20 AM
I was wondering if anyone could let me know about their experience with ServiceGuard cluster failover between npars on the same Integrity superdome. I have read this is a supported solution from hp, but how often could a hardware issue affect the whole superdome where the failover would not happen.
Do people generally failover to another npar in the same Integrity superdome or have a separate server for failover purposes? I have had experience with the Alpha GS80 where the server has gone down and it has affected both hard paritions, even though this wasn't supposed to happen.
Thanks in advance for any comments.
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-28-2006 03:48 AM
тАО07-28-2006 03:48 AM
SolutionNpars are made up of one or more cell boards.
Different Npars are made of different cell boards. An npar is considered to be a "server" in it's own right as it runs a completely standalone copy of the OS from it's own hardware.
Cell boards are electrically separate from each other in the cell based systems so are supported as member nodes in a serviceguard cluster.
Superdomes have dual powerfeeds into each cabinet and the component npars are almost as resilient as having serveral standalone servers. The advantage of npars are the flexibilty you have especially if combined with vpars as well. Vpars within the same npar are not suitable for primary and alternate nodes for a serviceguard package but vpars in different npars are.
The Superdome only has 3 SPOF's - The System backplane, the HUCB board and the UGUY board. Don't worry too much about these as I've never heard of one failing yet.
In fact Superdomes have to be configured around 54 possible cominations of cells and I/O cardcages to give a balance between maximum protection against failure and maximum performance over the internal architecture.
Phew - hope some of that was helpful.
If you have any specifics - please ask.
Kind regards
Ian
## ---------------------------------------------------------------------------##
Which is the only cheese that is made backwards?
Edam!
Tweets: @2techie4me
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-28-2006 03:54 AM
тАО07-28-2006 03:54 AM
Re: npars failover
The most critical situation is a power outage for the computer room or any worst case like fire or water.
For this reason you should have 2 redundant locations and cluster between them in different machines.
BTW, it's unlikely to see a SPOF failure in the superdome.
Hope this helps!
Regards
Torsten.
__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.
__________________________________________________
No support by private messages. Please ask the forum!
If you feel this was helpful please click the KUDOS! thumb below!
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-28-2006 09:03 PM
тАО07-28-2006 09:03 PM
Re: npars failover
A Superdome has 3 offical single points of failure, and they do occasionally have a failure although this is very rare.
This document may be of use to your, especially page 8
http://docs.hp.com/en/6033/HPServiceguardClusterConfig.pdf
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-29-2006 12:27 AM
тАО07-29-2006 12:27 AM
Re: npars failover
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-29-2006 08:22 AM
тАО07-29-2006 08:22 AM
Re: npars failover
There is nothing that is available that will allow a failover of an application between Npars/Vpars other than an HA product such as Serviceguard.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-29-2006 11:15 AM
тАО07-29-2006 11:15 AM
Re: npars failover
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-04-2006 02:03 AM
тАО08-04-2006 02:03 AM