Marathon FTvirtual Server Bedienungsanleitung PDF herunterladen (Seite 19)

IBM FAStT Storage using the RDAC driver

All drives allocated to a single Endurance Configuration must be assigned to the same controller

on a FAStT storage sub-system. IBM FAStT storage sub-systems have two controllers, and

allow logical drives to be split between the two. A problem exists where if drives allocated to

an Endurance system are split between the two, a failure of one of the controllers in the FAStT

sub-system may cause a disk failure in the Endurance configuration.

Supported configurations:

• The two CoServers in the Endurance Configuration are connected to different FAStT sub-

systems. All the drives allocated to CoServer 1 must be on the same controller (either A

or B) on the FAStT sub-system serving it's drives. The drives allocated to CoServer 2, on

a separate FAStT sub-system, must also all be on the same controller on that sub-system.

There is no interaction between the sub-systems, so if all of CoServer 1's drives are on

controller A in FAStT sub-system 1, CoServer 2's drivers can be on controller B in sub-

system 2.

• The two CoServers both use drives from the same FAStT sub-system. All the drives for

both CoServers must be on the same controller. All of CoServer 1's drives of FAStT sub-

system 1 must be on one controller. If they are on controller A, then all of CoServer 2's

drives on that same FAStT sub-system 1 must also be on controller A.

Third-Party Vendor and Application Limitations

• Applications with the following characteristics cause loss of Virtual Server

synchronization:

- Applications or drivers that use Pentium hardware performance counters.

- Applications that install device drivers which may attempt to locate a product-key

device, such as a dongle or specialized data acquisition hardware.

• Debug tools are not supported on the Endurance Configuration.

Open Source Components

Endurance management facilities utilize CORBA to establish and manage communications

between the client software and server kernel components. This capability is implemented using

open source software supplied through the omniORB and JacORB libraries. Sources for the

omniORB library can be obtained from http://omniorb.sourceforge.net. Sources for the JacORB

library can be obtained from http://www.jacorb.com.

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Marathon FTvirtual Server Bedienungsanleitung Seite 19