- Community Home
- >
- Storage
- >
- Entry Storage Systems
- >
- Disk Enclosures
- >
- MSA500, 4 Servers, redundant controller
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
тАО11-16-2005 08:52 PM
тАО11-16-2005 08:52 PM
I searched the HP site, asked our reseller,..
but could not find definitive answers for
my planned configuration.
I want to attach four DL-380, DL-385
Servers running Linux to a MSA500 G2 with
a 4-port IO/Card and a redundant controller.
(4-node shared storage configuration)
I do not need multipath, and other cluster
features - the Linux Servers should use
the standard cciss driver only - but I need
the redundant controller failover.
So - what happens in a 4-node shared storage
configuration with a redundant controller
if the active controller fails:
* the redundant controller takes over
seemlessly ? (that would be nice)
* All 4 servers loose the connection to the
MSA500
(until somebody activates the redundant
controller)
Can somebody please tell me what would really
happen with this configuration.
Thanks,
Gerald
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО11-16-2005 09:07 PM
тАО11-16-2005 09:07 PM
Re: MSA500, 4 Servers, redundant controller
This functionality is embedded in qualified SmartArray servers controllers (SA6i, SA642). Therefore this requirement exists to connect MSA500 to SA controllers, not to simple SCSI.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО11-16-2005 09:31 PM
тАО11-16-2005 09:31 PM
Re: MSA500, 4 Servers, redundant controller
after reading MSA 500 G2 technology white paper (page 6) I would also think a
seamless failover is possible, when you are
using SA6i, SA642 HBA's.
But everyone I asked so far said:
* I'm not sure if it really works
* Maybe it works only with the
HP Multipath software on the Servers
* The failover takes very long
(about 30 seconds or more)
Do you have any experience with such a
configuration ?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО11-17-2005 09:15 AM
тАО11-17-2005 09:15 AM
SolutionBasil is correct. The controller will fail-over automatically and the servers should not lose connection to storage.
However you will need some kind of control in place so that only one server is access a particular logical drive at a time. Whether you have a clustering service set-up, or are using the Selective Storage presentation that comes with the HP ProLiant Array Configuration Utilty, you must have some kind of control mechanism configured.
As for Multi-path, this software merely allows for redundant controller fail-over in the server. It has nothing to do with the redundant controllers in the MSA500.
Hope this helps.
Jacob Zeeman
HP Server Storage Specialist
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО11-17-2005 09:51 AM
тАО11-17-2005 09:51 AM
Re: MSA500, 4 Servers, redundant controller
your explanations helped me a lot.
I'll buy MSA 500 with the 4-port I/O Module
and a redundant controller.
Our setup is "clustered" - all 4 Servers
normaly run their own Linux Vservers
(http://linux-vserver.org)
from partitions of the MSA Array.
If one Server fails (heartbeat), his peer
cuts him the power connection (with ILO over ssh), mounts his Vserver partitions from
the MSA Array and starts his Vservers.
This works quite reliable, but a controller
failure on the MSA 500 would bring down all
4 Servers. With a working controller failover
on the MSA 500, I can eliminate this single
point of failure.