Disk Management
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- Pages: 19
1
Differences Between the FAT, FAT32, and NTFS
Key differences: Partition size limits Sector size limits Security Data compression
2
Types of Disks
Basic Disk Dynamic Disk You can create volumes that can span multiple disks There is no requirement for contiguous space when increasing or extending the size of a volume
3
Types of Disks
Benefits of Basic Disk Setup and Recovery Console access Benefits of Dynamic Disk Spanning multiple disks Fault-tolerant capability
4
What Is a Partition?
A physical disk is sectioned OR OR
into separate partitions A physical disk can have up to:
Primary Primary
Primary Primary
C:
C: C:
D:
D: D:
E: E:
E: E:
Four primary partitions, or Three
primary
partitions
and one extended partition Extended
partitions
are
subdivided into logical drives
F: F:
F: F: G: G: H: H:
Extended Extended with with logical logical drives drives
5
Types of Volumes
Simple Volume Spanned Volume Striped Volume (RAID-0) Mirrored Volume (RAID-1) RAID-5 Volume (Striped With Parity)
6
What Is Fault Tolerance?
The ability to survive hardware failure Fault-tolerant volumes provide data redundancy Fault-tolerant volumes require dynamic disks Fault-tolerant volumes are not a replacement for backup
7
What Is a Simple Volume?
Contains space on a single disk Can be created only on dynamic disks Can be extended if formatted with NTFS
Simple Simple Volume Volume
Fault Tolerance is not available Spanning is not available Read & Write Speed is Normal
8
How Simple Volume works ?
123456 1 2 3 4 5 6
Volume Disk 1
Administrator
9
What Is a Spanned Volume?
Spanning is available Minimum - 2 Hard Disks Maximum - 32 Hard Disks
Spanned Spanned Volume Volume
Includes disk space from two or more disks, filling the first disk, then the second, and so on Fault Tolerance is not available Read & Write Speed is Normal
10
How Spanned Volume works ?
123456 1 2 3 4 5 6
Disk 1 Volume Disk 2
Administrator
11
What Is a Striped Volume?
Minimum - 2 Hard Disks Maximum - 32 Hard Disks Data is written alternately and evenly to two or more disks Read & Write Speed is Fast Spanning is available Fault Tolerance is not available Also Known as RAID-0
12
How RAID 0 works ?
123456 1 3 5 2 4 6
Disk 1 Volume Disk 2
Administrator
13
What Is a Mirror Volume? Minimum - 2 Hard Disks Maximum - 2 Hard Disks Simultaneously data will be written to two volumes on two different disks Almost any volume can be mirrored, including the system and boot volumes Read Speed is Fast & Write Speed is Slow Fault Tolerance is available 50% overhead Also Known as RAID-0
14
How RAID 1 works ?
123 1 2 3 1 2 3
Disk 1 Volume Disk 2
Administrator
15
What Is a RAID-5 Volume?
Minimum - 3 Hard Disks Maximum - 32 Hard Disks Data is written alternately and evenly to two or more disks and a parity is written on one disk Read & Write Speed is Fast Fault Tolerance is available Also Known as Striped with parity
16
How RAID 5 works ?
123456 1 3 Disk P=5&6
1
2 P = 3 Volume & 4 Disk 2 5 P=1&2 4 Disk 6
3
Administrator
17
What will happen ?
New Disk Disk Generate Data 22 Fails Data Disk Generate Fails Recovered Data Data Loss Recovered Data Data Loss
Volume
1 3 Disk P=5&6
1
2 P=3& 4 Disk 5
2
P=1&2 4 Disk 6
3
Administrator
18
What Is a Mounted Drive?
Is assigned a path rather than a drive letter Allows you to add more drives without using up drive letters Adds
volumes
to
systems
without
adding
separate drive letters for each new volume
19
Differences Between the FAT, FAT32, and NTFS
Key differences: Partition size limits Sector size limits Security Data compression
2
Types of Disks
Basic Disk Dynamic Disk You can create volumes that can span multiple disks There is no requirement for contiguous space when increasing or extending the size of a volume
3
Types of Disks
Benefits of Basic Disk Setup and Recovery Console access Benefits of Dynamic Disk Spanning multiple disks Fault-tolerant capability
4
What Is a Partition?
A physical disk is sectioned OR OR
into separate partitions A physical disk can have up to:
Primary Primary
Primary Primary
C:
C: C:
D:
D: D:
E: E:
E: E:
Four primary partitions, or Three
primary
partitions
and one extended partition Extended
partitions
are
subdivided into logical drives
F: F:
F: F: G: G: H: H:
Extended Extended with with logical logical drives drives
5
Types of Volumes
Simple Volume Spanned Volume Striped Volume (RAID-0) Mirrored Volume (RAID-1) RAID-5 Volume (Striped With Parity)
6
What Is Fault Tolerance?
The ability to survive hardware failure Fault-tolerant volumes provide data redundancy Fault-tolerant volumes require dynamic disks Fault-tolerant volumes are not a replacement for backup
7
What Is a Simple Volume?
Contains space on a single disk Can be created only on dynamic disks Can be extended if formatted with NTFS
Simple Simple Volume Volume
Fault Tolerance is not available Spanning is not available Read & Write Speed is Normal
8
How Simple Volume works ?
123456 1 2 3 4 5 6
Volume Disk 1
Administrator
9
What Is a Spanned Volume?
Spanning is available Minimum - 2 Hard Disks Maximum - 32 Hard Disks
Spanned Spanned Volume Volume
Includes disk space from two or more disks, filling the first disk, then the second, and so on Fault Tolerance is not available Read & Write Speed is Normal
10
How Spanned Volume works ?
123456 1 2 3 4 5 6
Disk 1 Volume Disk 2
Administrator
11
What Is a Striped Volume?
Minimum - 2 Hard Disks Maximum - 32 Hard Disks Data is written alternately and evenly to two or more disks Read & Write Speed is Fast Spanning is available Fault Tolerance is not available Also Known as RAID-0
12
How RAID 0 works ?
123456 1 3 5 2 4 6
Disk 1 Volume Disk 2
Administrator
13
What Is a Mirror Volume? Minimum - 2 Hard Disks Maximum - 2 Hard Disks Simultaneously data will be written to two volumes on two different disks Almost any volume can be mirrored, including the system and boot volumes Read Speed is Fast & Write Speed is Slow Fault Tolerance is available 50% overhead Also Known as RAID-0
14
How RAID 1 works ?
123 1 2 3 1 2 3
Disk 1 Volume Disk 2
Administrator
15
What Is a RAID-5 Volume?
Minimum - 3 Hard Disks Maximum - 32 Hard Disks Data is written alternately and evenly to two or more disks and a parity is written on one disk Read & Write Speed is Fast Fault Tolerance is available Also Known as Striped with parity
16
How RAID 5 works ?
123456 1 3 Disk P=5&6
1
2 P = 3 Volume & 4 Disk 2 5 P=1&2 4 Disk 6
3
Administrator
17
What will happen ?
New Disk Disk Generate Data 22 Fails Data Disk Generate Fails Recovered Data Data Loss Recovered Data Data Loss
Volume
1 3 Disk P=5&6
1
2 P=3& 4 Disk 5
2
P=1&2 4 Disk 6
3
Administrator
18
What Is a Mounted Drive?
Is assigned a path rather than a drive letter Allows you to add more drives without using up drive letters Adds
volumes
to
systems
without
adding
separate drive letters for each new volume
19
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