MSI MS-91F7 User Manual download pdf (Page 30)

copies are created, the copy/backup utility starts processing the data while applications keep

writing to original volumes.

Unlike Paragon Hot Processing the VSS technology provides a unique possibility to make a

synchronous snapshot of multiple volumes. This very feature can be particularly beneficial when

backing up active SQL Server 2003, Exchange 2003 or Oracle databases located on multiple

volumes the way it is recommended by Microsoft to improve the level of database performance and

reliability, thus providing 100-percent data consistency.

To use VSS it is necessary to have a mounted 300 MB+ NTFS partition.

Dynamic Disks

As you probably know, MS-DOS, Microsoft Windows 95/98/Me/NT/2000/XP/Vista/Server 2003/2008

support four primary partitions per physical hard disk, one of which can be extended. Certainly there

is the possibility to create logical drives within the extended partition. Such types of disks are called

basic. Windows XP Professional, Windows 2000, Windows Vista and Windows Server 2003/2008 follow

the same strategy: You can have a maximum of four primary partitions, one of which can be an

extended partition with logical drives. However, these operating systems also introduce a new disk

configuration type - dynamic disk - which must be understood to effectively configure and manage

hard disks.

Dynamic disk is a physical disk that doesn't use partitions or logical drives. Instead, it contains only

dynamic volumes. Regardless of what format you use for the file system, only Win2K computers can

access dynamic volumes directly. However, computers that aren't running Win2K can access the

dynamic volumes remotely when connected to the shared folders over the network.

Dynamic disks can co-exist on a system with basic disks. The only limitation is that you cannot mix

Basic and Dynamic disks on the same hard drive.

There are five types of dynamic volumes: simple (uses free space from a single disk), spanned

(created from free disk space that is linked together from multiple disks), striped (a volume the data

of which is interleaved across two or more physical disks), mirrored (a fault-tolerant volume the data

of which is duplicated on two physical disks, and RAID-5 volumes (a fault-tolerant volume the data of

which is striped across an array of three or more disks).

With dynamic storage, you can perform disk and volume management without the need to restart

Windows.

Limitations:

• Dynamic disks are not supported on portable computers.

• Dynamic disks are not supported on Windows XP Home Edition-based computers.

• You cannot create mirrored volumes or RAID-5 volumes on Windows XP Home Edition,

Windows XP Professional, or Windows XP 64-Bit Edition-based computers.

Thus, the dynamic disk is a new way of looking at hard disk configuration. Dynamic disks offer you

more management flexibility without the partition limitation of basic disks. Dynamic disks can contain

an unlimited number of volumes, but they cannot contain partitions or logical drives. Dynamic

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MSI MS-91F7 User Manual Page 30