[Beowulf] Need some advise: Sun storage' management server hangs repeatedly

Hi HPC experts, I seek your advise/suggestion to resolve a storage(NAS) server' repeated hanging problem. We've a 23 nodes Rocks-5.1 HPC cluster. The Sun storage of capacity 12 TB is connected to a management server Sun Fire X4150 installed with RHEL 5.3 and this server is connected to

Re: [Beowulf] cisco networking

Greg Keller wrote: Date: Mon, 11 Jan 2010 09:58:24 -0500 From: Michael Di Domenico > Subject: Re: [Beowulf] cisco networking To: Glen Dosey mailto:dos...@r-networks.net>> Cc: Beowulf@beowulf.org Message-ID:

Re: [Beowulf] cisco networking

Date: Mon, 11 Jan 2010 09:58:24 -0500 From: Michael Di Domenico Subject: Re: [Beowulf] cisco networking To: Glen Dosey Cc: Beowulf@beowulf.org Message-ID: Content-Type: text/plain; charset=ISO-8859-1 On Sun, Jan 10, 2010 at 1:29 AM, Glen Dosey wrote: You can have multiple ether-

Re: [Beowulf] cisco networking

On Sun, Jan 10, 2010 at 1:29 AM, Glen Dosey wrote: > You can have multiple ether-channel links between 2 switches. The > limitation is that if they are in the same layer 2 broadcast domain > (VLAN) only 1 will be active and STP will block the other. > > If you place each switch in a separate netwo