Sams Teach Yourself MCSE Windows NT Server 4 in 14 Days
(Publisher: Macmillan Computer Publishing)
Author(s): David Schaer, et al
ISBN: 0672311283
Publication Date: 12/15/97

Incremental

An incremental backup is the fastest backup to perform but the longest to restore. Selected files that have been modified since the last backup are included in the backup. Because an incremental backup clears the archive bit, a series of incremental backups each will not necessarily back up the same information. If you were to perform a normal backup on Monday and an incremental backup each successive day, after a crash you would need to restore the normal and then apply each incremental backup in successive order.

Daily

In a daily backup, only the files modified that day will be included in the backup set. The archive bit is not cleared during the backup.

6.6.2. Performing the Backup

Before starting the backup program it is a good practice to ensure that all files which must be included in the backup set are accessible. This includes establishing a connection to any remote computers that you will be backing up.

After launching the Backup program (see Figure 6.9), simply select the directories and files you want to include in the backup set. If multiple tapes are required to perform the backup they will be incorporated into a tape set. When a tape set is created, the tape catalog or listing of backups is stored on the final tape.

Figure 6.9.  You can select files and directories to be backed up individually.

NTBACKUP provides several options that can be used to customize your backup as well as how the files will be restored.

Backup Registry

The registry of the local, not remote, machine can be backed up to tape as long as at least one file from the drive containing the registry has been selected.

Restrict Access to Owner or Administrator

If this option is selected, only the person who performed the backup or an administrator will be able to restore the data.

Restoring a Tape Backup

NT must be running in order to restore a tape. This is not an issue unless the disk containing the NT system or boot files has failed. In that case it is necessary to reinstall a minimal copy of NT in order to be able to launch the backup program.

After the specific backup set has been selected from the tape catalog, a series of restore options are offered.

Restore to Drive

The location to which the data will be restored must be identified. The data can be restored to either a FAT or NTFS partition, regardless of what file system was used during the backup. If files are restored to a FAT partition, then any NTFS permissions will be lost.

Restore Local Registry

Selecting this option will restore the registry information on the backup set to the local computer. This is preferred over the emergency repair disk because it can be applied online.

Restore Permissions

This option has an effect only if the data originated from an NTFS volume and an NTFS volume has been selected as the location to which to restore.

Verify After Restore

This option will initiate a comparison of the restored files with the data on the backup set to verify that the data has been accurately restored.

6.7. Lab

This lab will help in your learning by testing you on the information presented in this chapter, as well as by giving you exercises to hone your skills. You can find answers to the review questions in Appendix B, “Answers to Review Questions.”

6.7.1. Review Questions

Question 1

Which of the following levels of RAID are supported by NT Server 4.0 when running as a member server?

A.  RAID0

B.  RAID1

C.  RAID5

Question 2

What equipment is required to implement disk duplexing on NT Server 4.0?

A.  One hard disk

B.  Two hard disks

C.  One controller

D.  Two controllers

Question 3

Which method of NT backup requires the most tapes during a restoration?

A.  Full

B.  Differential

C.  Incremental

D.  Copy

Question 4

Which of the following disk configurations would provide both increased read performance and fault tolerance?

A.  Disk mirroring

B.  Disk duplexing

C.  Stripe sets

D.  Stripe sets with parity

Question 5

Which of the following disk configurations provides the highest level of performance?

A.  Disk mirroring

B.  Disk duplexing

C.  Stripe sets

D.  Stripe sets with parity

Question 6

Which of the following files must be located on a fault-tolerant boot disk in order to access an IDE drive?

A.  NTLDR

B.  NTDETECT.COM

C.  BOOT.INI

D.  NTOSKRNL.EXE

E.  NTBOOTDD.SYS

Question 7

Which of the following is true regarding restoring data backed up from an NTFS volume to a FAT volume?

A.  The FAT volume will be automatically converted to NTFS.

B.  The permissions on the files will be set to EVERYONE (RX).

C.  The permissions on the files will be lost.

D.  Data backed up from an NTFS volume cannot be restored to a FAT volume.

Question 8

How many members of a RAID5 stripe set with parity can fail before the data must be restored from a backup?

A.  One

B.  Two

C.  Three

Question 9

Which of the following backup options gives a higher degree of security to the backup tape?

A.  Restrict access to owner or administrator.

B.  Restore to this drive only.

C.  Verify after restore.

D.  Restore local registry.

Question 10

Which tape in a family set holds the tape catalog?

A.  The first tape

B.  The last tape

C.  Each tape contains a separate catalog.

6.7.2. Exercises

Exercise 6.1

You have a new server to install and must design the disks for maximum fault tolerance. The server contains six 1GB drives. How would you configure it?

Exercise 6.2

You are given the job to design a backup procedure to ensure that the data on your four servers is backed up on a regular basis. You also want to design this plan to allow for the quickest restore. How would you do it?