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Windows server 2003 vds support – IBM DS8000 User Manual

Page 389

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Appendix A. Open systems operating systems specifics

367

– With Windows 2003, MSCS uses target resets. See the Microsoft technical article

Microsoft Windows Clustering: Storage Area Networks at

:

http://www.microsoft.com/windowsserver2003/techinfo/overview/san.mspx

Windows Server 2003 will allow for boot disk and the cluster server disks hosted on the
same bus. However, you would need to use Storport miniport HBA drivers for this
functionality to work. This is

not

a supported configuration in combination with drivers

of other types (for example, SCSI port miniport or Full port drivers).

– If you reboot a system with adapters while the primary path is in a failed state, you

must manually disable the BIOS on the first adapter and manually enable the BIOS on
the second adapter. You cannot enable the BIOS for both adapters at the same time. If
the BIOS for both adapters is enabled at the same time and there is a path failure on
the primary adapter, the system will stop with an INACCESSIBLE_BOOT_DEVICE
error upon reboot.

Windows Server 2003 VDS support

With Windows Server 2003 Microsoft introduced the

Virtual Disk Service (VDS).

It unifies

storage management and provides a single interface for managing block storage
virtualization. This interface is vendor and technology neutral, and is independent of the layer
where virtualization is done, operating system software, RAID storage hardware, or other
storage virtualization engines.

VDS is a set of APIs which uses two sets of providers to manage storage devices. The built-in

VDS software providers

enable you to manage disks and volumes at the operating system

level.

VDS hardware providers

supplied by the hardware vendor enable you to manage

hardware RAID arrays. Windows Server 2003 components that work with VDS include the
Disk Management MMC snap-in, the

DiskPart

command-line tool, and the

DiskRAID

command-line tool, which is available in the Windows Server 2003 Deployment Kit.
Figure A-1 shows the VDS architecture.

Figure A-1 Microsoft VDS Architecture

Software Providers:
•Basic Disks
•Dynamic Disks

Disk Management

MMC Snap-in

Hardware Providers

Virtual Disk Service

Command-Line Tools:
•DiskPart
•DiskRAID

Storage Management

Applications

LUNs

Other

Disk

Subsystem

DS8000/DS6000

HDDs

Non-Microsoft Functionality

Hardware

Microsoft Functionality

Software Providers:
•Basic Disks
•Dynamic Disks

Disk Management

MMC Snap-in

Hardware Providers

Virtual Disk Service

Command-Line Tools:
•DiskPart
•DiskRAID

Storage Management

Applications

LUNs

Other

Disk

Subsystem

DS8000/DS6000

HDDs

Non-Microsoft Functionality

Hardware

Microsoft Functionality