Disk Management

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Disk Management

• Lab Sheet 7

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Storage Types

• Win2000 supports 2 types of disk storage
• Basic storage
• Dynamic storage
• A physical disk must be either basic OR dynamic.

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Basic Storage

• Tradition Industrial standard.
• Basic Disk
• Initialized for Basic Storage.
• Division of hard disk into partitions.
• Contains Primary, Extended partitions and Logical
  drives.
• All Windows OS support Basic storage.

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Basic Storage

• Primary Partitions

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Basic Storage
Primary and Extended Partitions

• Primary

Primary
Logical Drive
Logical Drive
Logical Drive
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Dynamic Storage

• Win2000 and Win XP Professional supports Dynamic
  storage.
• Dynamic Disk
• Initialized for Dynamic Storage.
• Divided into Volumes.
• Volume
• Fixed amount of storage on a disk.
• Can be formatted with a file system and assign a
  drive letter.

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Dynamic Disk - Volume

• A Disk can contain more than one volume.

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Dynamic Disk - Volume

• A volume can span more than one disk.

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Dynamic Disk Volume Types

• Simple Volume
• Spanned Volume
• Mirrored Volume
• Striped Volume
• RAID-5 Volume

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Simple Volume

• Uses free space from a single disk.

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Spanned Volume

• Made from disk space that is linked together from
  multiple disks (max 32).
• Cannot be mirrored.

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Mirrored Volume

• Fault tolerance volume whose data is duplicated
  on two physical disks.
• Mirrored volume cannot be extended.

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Stripped Volume

• Data is interleaved across two or more physical
  disks.
• Cannot be extended or mirrored.
• Can we create a mirrored volume in Win2000
  Professional?

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RAID 5 Volume

• Fault tolerance volume whose data is striped
  across an array of 3 or more disks.
• Data on a failed disk can be recreated from the
  information on the remaining disks.
• Cannot be extended or mirrored.
• Can we create RAID 5 volume in Win2000
  Professional?

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RAID 5 Volume
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Limitations of Dynamic Volumes

• Win2000 installation only recognizes Basic
  volumes and Dynamic volumes upgraded from Basic
  volumes.
• Cannot span volume when the volume (boot volume)
  contains Win2000 files.
• Win2000 can only be installed on Simple and
  Mirrored Volumes on a dynamic disk.

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Data Redundancy

• Mirrored Volume
• Better overall read and write performance than
  RAID-5 volume.
• No loss in performance when a member of the
  mirrored volume fails.
• More expensive.
• E.g one 10GB disk to backup 10GB disk of data.

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Data Redundancy

• RAID-5 Volume
• Better read performance than mirrored volume.
• Read and write performance drops when one of the
  disk members failed.
• Good for applications that require redundancy and
  primarily read-oriented.
• Cheaper than mirrored volume. Requires one
  additional disks for one volume.
• E.g. Use three 10GB disk to backup 20GB volume.

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Limitations of Dynamic Disks

• Not supported on laptops.

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Objectives

• Upgrade a Basic disk to Dynamic disk.
• Extend a volume.
• Placing a volume under a folder.

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Tools, Equipment and Materials

• PC installed with Windows 2000 Professional
  Operating System.
• Lab Sheet 7

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You may begin now.