topic Re: MSA1000 & two cluster w2003/SGLinux in MSA Storage

MSA1000 & two cluster w2003/SGLinux

Albert Malvehy — Fri, 29 Dec 2006 05:09:14 GMT

Hi all,
I have a MSA100 & one built-in 8 port SAN switch behind tow nodes on cluster W2003 with one single-port per node. I need a second disk array by a HP Serviceguard/linux cluster. ¿Is possible to use my MSA1000 to connect this linux cluster maintain de first 2003 cluster simultaneously?

Thanks a lot.

Re: MSA1000 & two cluster w2003/SGLinux

Jose Chavarria — Fri, 29 Dec 2006 08:40:56 GMT

Hi,

Yes you can use the existing switch, just enable zoning in the switch configuration. Create 1 zone for the Windows cluster with the 2 nodes and the MSA1000, then a second one with the Linux cluster. The best is to zone by WWN not by port.

Jose

Re: MSA1000 & two cluster w2003/SGLinux

James Muell — Sat, 30 Dec 2006 11:06:20 GMT

You do realize that a Linux cluster and a windows cluster is not supported by HP - see HP's cluster compatability matrix -- on the same MSA, let alone with only one switch. Controller failover will inevitably cause failure in both, not to mention the possibility of corrupting your data.

Re: MSA1000 & two cluster w2003/SGLinux

Jose Chavarria — Tue, 02 Jan 2007 09:13:12 GMT

Sorry to differ James, please check the SAN Design Guide page 159, table 93. Now what may cause data corruption is when you present Linux Luns to a Windows server/cluster, or Windows Luns to a Linux server (I'm attaching the link below); that is why zoning and selective storage presentantion (SSP) are required. Remember that to have a redundant MSA1000 you'll need a 2nd controller and 2/8 switch, multipathing is software is required too, if you have multiple paths.

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00403562/c00403562.pdf

Jose