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I have since added multiple SCSI controllers, one for each of the shared disks. Why the restriction - is it specific to MVS? Normal practise in a physical configuration? Do other virtualisation packages have the same restriction?
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I have since added multiple SCSI controllers, one for each of the shared disks. Why the restriction - is it specific to MVS? Normal practise in a physical configuration? Do other virtualisation packages have the same restriction?

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While trying to add additional shared disk resource to existing MS cluster in Virtual Server 2005, I noticed that on a shared SCSI controller the only selectable option when adding a disk is ID 0. If the controller already has a disk with ID0 (as in quorum in this example), it not possible to add any further shared disks to the shared bus.<br />
e.g. The virtual machine has two SCSI adapters. The Shared controller is attached as Virtual SCSI adapter 2 (SCSI adapter ID: 7). On the Virtual Hard Disk Properties page, clicking the attachment drop down only lists ID 0 for SCSI 1. The non shared adapter has ID 0 through 7 available for selection.
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While trying to add additional shared disk resource to existing MS cluster in Virtual Server 2005, I noticed that on a shared SCSI controller the only selectable option when adding a disk is ID 0. If the controller already has a disk with ID0 (as in quorum in this example), it not possible to add any further shared disks to the shared bus.
e.g. The virtual machine has two SCSI adapters. The Shared controller is attached as Virtual SCSI adapter 2 (SCSI adapter ID: 7). On the Virtual Hard Disk Properties page, clicking the attachment drop down only lists ID 0 for SCSI 1. The non shared adapter has ID 0 through 7 available for selection.

How do I attach multiple shared disks in vm cluster when a disk device ID is limited to 0 an a shared SCSI controller?

Microsoft Virtual Server was a virtualization solution that facilitated the creation of virtual machines on the Windows XP, Windows Vista and Windows Server 2003 operating systems. Virtual machines are created and managed through a web-based interface that relies on Internet Information Services (IIS) or through a Windows client application tool called VMRCplus. Features included Linux guest operating system support, Virtual Disk Precompactor, symmetric multiprocessing (SMP), x64 host operating system support, the ability to mount virtual hard drives on the host machine and additional operating systems support, including Windows Vista, and a volume shadow copy writer.

Microsoft Virtual Server

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.