HP Integrity Virtual Machines Installation, Configuration, and Administration

• VM guest storage specification defines where and what storage is seen in the
virtual machine (see Section 7.2.2.1: “VM Guest Storage Specification” (page 81))
• VM Host storage specification defines where and how the virtual machine storage
is supplied on the VM Host (see Section 7.2.2.2: “VM Host Storage Specification” (page 81))
For examples of how to construct resource statements, see Section 7.2.2.3: “VM Storage Resource
Statements” (page 82).
7.2.2.1 VM Guest Storage Specification
All virtual storage is addressed from virtual PCI buses. There are 8 PCI buses on the Integrity
VM virtual platform. Each PCI bus has 8 slots into which virtual PCI adapters can be placed.
One such adapter, simply called scsi, is an emulated single-ported parallel SCSI MPT storage
adapter that can be used to connect 15 SCSI target devices to a virtual machine.
A VM Host administrator specifies this SCSI MPT adapter using the following:
device:scsi:pcibus,pcislot,scsitgt
Where:
• device is one of the following: disk, dvd, tape, changer, or burner
• pcibus is an integer from 0-6.
The virtual MPT adapters are only supported on PCI buses 0-6. PCI bus 7 is reserved for
other use.
• pcislot is an integer from 0-7.
A PCI function number is not specified. It is implicitly zero because the virtual MPT storage
adapter supports only a single channel.
• scsitgt is an integer from 0-14 (15 is reserved for the virtual SCSI adapter).
Unlike real parallel SCSI bus, there is no arbitration on virtual SCSI buses. The SCSI target
IDs for the virtual devices must be unique.The virtual SCSI MPT adapter takes target ID 15
for itself, leaving 0-14 for SCSI targets.
All SCSI targets connected to a VM are single LUN devices. That is, virtual disks and DVDs
are emulated as single LUNs and all attached devices are specified by per LUN VM Host
system files. The physical LUN number of an attached device has no impact. All virtual and
attached SCSI LUN numbers are implicitly zero and therefore not specified.
All supported storage device types can share the same virtual SCSI MPT adapter. Up to 15
storage devices can be added to the same SCSI MPT adapter by specifying the same PCI bus
and slot numbers.
A virtual SCSI MPT adapter can only be added to a virtual machine if it has a device connected
to it.
Not all device types are virtualized. Disk and DVD devices are virtual device types, whose virtual
media comes from the VM Host. Tapes, changers, and burners are physical VM Host devices.
For these attached devices, the physical SCSI IDs do not determine their place on the virtual bus.
7.2.2.2 VM Host Storage Specification
Each VM storage device is backed by some VM Host storage entity. A VM Host entity is defined
on the VM Host with a system file, which is used by Integrity VM and the VM Host operating
system in processing I/O to and from that storage entity.
A VM Host administrator specifies these storage entities using the following specification:
storage:location
Where:
7.2 Configuring Integrity VM Storage 81