This document discusses disk and data storage, including hard disk drives, basic and dynamic disks, dynamic volumes like simple, spanned and striped volumes. It describes the disk management tool and various disk status descriptions. It also covers the diskpart and chkdsk command line tools as well as RAID levels 0 through 5.

1. Network Implementation &
Support
Chapter 6
Disks & Data Storage
Eric Vanderburg © 2006

2. Hard Disk Drives (HDD)
• Basic Disk
– Primary Partition
– Active Partition
– Extended Partition
– Logical Drives
• Dynamic Disk
– Can be extended
– Stores disk info on each disk
– Requires 1MB free space to convert
Eric Vanderburg © 2006

3. Dynamic Volumes
• Simple Volume – can be extended
• Spanned Volume – 2-32 disks
• Striped Volume – 2-32 disks, 64KB blocks
Eric Vanderburg © 2006

4. • Disk Management Tool
– View Properties
– View Partitions
– Add/Format volumes
– Reactivate disks
Eric Vanderburg © 2006

5. Status Descriptions
• Status Descriptions
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Failed
Failed Redundancy
Formatting
Healthy
Regenerating – used in RAID 5
Resyncing – used in RAID 1
Unknown – bad boot sector
Foreign
Missing
Initializing – converting from Basic to Dynamic
Not Initialized
Online
Offline
Unreadable – I/O errors or corruption
Eric Vanderburg © 2006

6. Command Line
• Diskpart
– Add disk assign letter=d mount=path size=20000
create partition primary/create volume raid/create
volume simple
– Break disk – undo mirror
– Convert basic dynamic
– Delete disk
– Extend
– import
• Chkdsk
– /F Fix errors
– /R Recover bad sectors
• Convert E: /FS:NTFS
Eric Vanderburg © 2006

7. Command Line
• Format
• FSUtil
– Fsinfo drives
– Fsinfo volume diskfree d:
– Fsinfo quota enforce d:
– Fsinfo quota query d:
• Mountvol C:mountpoint GUID
– /d deletes
Eric Vanderburg © 2006

8. RAID
• RAID 0 – Striping
• RAID 1 – Mirroring
• RAID 2 – Striping with error correcting
data
• RAID 3 – Striping with error correcting
data stored on one disk in the array
• RAID 4 – Striping with error correcting
data and checksums
• RAID 5 – Striping with error correcting
data and checksums on all disks
Eric Vanderburg © 2006