[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference vaxaxp::vmsnotes

Title:VAX and Alpha VMS
Notice:This is a new VMSnotes, please read note 2.1
Moderator:VAXAXP::BERNARDO
Created:Wed Jan 22 1997
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:703
Total number of notes:3722

675.0. "Common system disk on heterogeneous? (Urgent" by HGOV08::PATRICKNG () Tue Jun 03 1997 06:08

    
    Hi,
    
    My understanding of heterogeneous mixed VMScluster (VAX and Alpha) 
    requires system disk for each host on the cluster.
    
    A customer wants to find out whether they can share a common system 
    disk for several VAX hosts and another common system disk for Alpha 
    hosts. Does it work? Is this a supported cluster?
    
    Is it possible to share a common pagefile on a heterogeneous cluster?
    
    
    Thanks,
    Patrick
    
     
T.RTitleUserPersonal
Name
DateLines
675.1UTRTSC::utojvdbu1.uto.dec.com::JurVanDerBurgChange mode to Panic!Tue Jun 03 1997 09:0221
    >My understanding of heterogeneous mixed VMScluster (VAX and Alpha) 
    >requires system disk for each host on the cluster.

Each architecture requires a system disk. Multuple systems of equal architecture
may share a system disk.
    
    >A customer wants to find out whether they can share a common system 
    >disk for several VAX hosts and another common system disk for Alpha 
    >hosts. Does it work? Is this a supported cluster?

That's perfectly normal and supported.
    
    >Is it possible to share a common pagefile on a heterogeneous cluster?

Excuse me? A pagefile can NEVER be shared between systems. Or did you mean share a
disk for paging/swapping between systems with multiple page/swapfiles on it? That
should be possible although you should watch out because it's easy to overload such
a disk.

Jur.

675.2Cluster common pagefilesVIVIAN::RANCEhttp://vivian.hhl.dec.com/rance/Tue Jun 03 1997 10:2510
  .0>Is it possible to share a common pagefile on a heterogeneous cluster?

    This was possible with early versions of OpenVMS, I think it was fixed
    at about V5.5-2.  Before then you could install one systems primary
    pagefile as another systems secondary!  We got quite good at
    recognising the footprint of a "cluster shared pagefile" in the
    dumpfile that was created when one system paged all over another
    systems data!

    StuartR