[Beowulf] Lustre failover
jan.heichler at gmx.net
Tue Sep 16 00:32:24 PDT 2008
Mittwoch, 10. September 2008, meintest Du:
BS> No, you can do active/active with several systems
BS> / \
BS> OSS1 OSS2
BS> \ /
BS> (Raid1 and Raid2 are hardware raid systems).
BS> Now OSS1 will primarily serve Raid1 and OSS2 will primarily serve Raid2. So
BS> you have an active active situation.
this is not what you would call "active/active" in a HA-environment. If Server1 is DHCP-Server and Server2 is NFS-Server and both can take over the other service you have an "active/passive" DHCP and "active/passive" NFS.
Ofr Lustre you have "active/passive" for the data on RAID1 and "active/passive" for the data on RAID2.
But i know that in the Lustre world this scenario is called "active/active" because no hardware is idle ;-)
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