This chapter is from the book Show Dynamic VolumesWhat were once called sets (such as mirror sets and stripe sets) under earlier operating systems are called volumes (such as mirrored volumes and striped volumes) in Windows XP. Dynamic volumes are the only type of volume you can create on Dynamic disks. Dynamic disks eliminate the four partitions per disk limitation of Basic disks. You can install Windows XP Professional onto a dynamic volume; however, the volume must already contain a partition table. (It must have been converted from Basic to Dynamic under Windows XP or Windows 2000.) CAUTION You cannot install Windows XP onto dynamic volumes that were created under Windows 2000, Windows XP, or Windows Server 2003 from unallocated space. Only computers running Windows XP Professional, Windows 2000, or Windows Server 2003 can access dynamic volumes. The five types of dynamic volumes are simple, spanned, mirrored, striped, and RAID-5. Windows XP Professional supports only simple, spanned, and striped dynamic volumes, shown in Figure 3.7. Figure 3.7 Simple (E, G); spanned (F); and striped (H) dynamic volumes displayed in Disk Management. By default, Disk Management uses solid colors to represent the five different types of dynamic volumes. Table 3.2 lists the colors Disk Management uses by default. Table 3.2 Colors Used by Disk Management to Represent Drives
You must be an administrator or a member of the Administrators group to create, modify, or delete dynamic volumes. Simple VolumesA simple volume consists of disk space on a single physical disk. It can consist of a single area on a disk or multiple areas on the same disk that are linked together. To create a simple volume, perform the following steps:
Figure 3.8 Using the New Volume Wizard for Dynamic disks to create different types of dynamic volumes. Spanned VolumesA spanned volume consists of disk space from more than one physical disk. You can add more space to a spanned volume by extending it at any time. To create a spanned volume, perform the following steps:
Here are guidelines for spanned volumes:
Extending Simple or Spanned VolumesTo extend a simple or spanned volume, perform the following steps:
In general, you cannot extend a volume that maintains its entries in the partition table. This includes the system and boot volumes of the operating system used to convert the disk from Basic to Dynamic. Here are guidelines for extending a simple or a spanned volume:
Striped VolumesStriped volumes store data in stripes across two or more physical disks. Data in a striped volume is allocated evenly and across (in stripes) the disks of the striped volume. Storing files in this manner increases the write/read speed to and from your disks. To create a striped volume, perform the following steps:
Here are the guidelines for striped volumes:
Can you extend a spanned volume?A spanned volume consists of disk space from more than one physical disk. You can add more space to a spanned volume by extending it at any time.
What is the point of a spanned volume?A spanned volume combines areas of unallocated space from multiple disks into one logical volume, allowing you to more efficiently use all of the space and all the drive letters on a multiple-disk system. A striped volume is created by combining areas of free space on two or more disks into one logical volume.
What is the difference between an extended volume and a spanned volume?What is the difference between an extended volume and a spanned volume? Extended volume uses the free space on more than one physical hard disk, spanned volume does not write across all volumes in the small blocks.
What is the difference between simple volume and spanned volume?Simple volumes are used when you have enough disk space on a single drive to hold your entire volume. A spanned volume consists of disk space on two or more dynamic drives; up to 32 dynamic drives can be used in a spanned volume configuration.
|