Shulou(Shulou.com)06/03 Report--

Data backup and recovery, system backup and recovery

I. data backup and recovery

1. What is backup

Backup, that is, prepare another

-copy data from an electronic computer storage device to a mass storage device in response to possible unexpected situations such as file loss or data corruption

2. Category of backup object

System backup

-backup for the entire operating system

-when the operating system is damaged or unable to boot, it can be quickly recovered by backup

Data backup

-backup users' data files, applications, and databases

-when this data is lost or corrupted, it can also be restored by backup

3. Data cold backup

What is a cold backup?

-refers to the way to perform a backup if the documents that need to be backed up are not occupied

-such as shutting down the database software and backing up the database data

Advantages and disadvantages of cold backup

-advantages: simple, fast, easy to recover to a certain point in time, easy to maintain

-disadvantages: it can only be restored to a certain point in time, and the data is inconvenient to use normally during the backup.

4. Hot backup of data

What is a hot backup?

-refers to the manner in which the backup is performed without affecting the normal use of the backed-up document

-for example, the database software is running and backing up the database data

Advantages and disadvantages of hot backup

-advantages: short backup time, no impact on data use, and second-level recovery

-disadvantages: all operations are synchronized, including "delete"

II. Backup and restore of Win10 data

1. Win10 file backup

① start-set-Update and Security-backup-go to backup and restore

-- set up backup

② specifies where to save and what needs to be backed up

③ checks, saves settings, and runs backups

④ waits for backup to complete

2. Backup and restore of Win10 files

① start-set-Update and Security-backup-go to backup and restore

Restore my files

② browse folder-find and add previous backup-select location to restore (original location or other location)-perform restore operation

3. Dedicated data recovery

Use third-party dedicated data recovery software for deletion, formatting, and repartitioning

Perform recovery operations such as EasyRecovery easy recovery, FinalDate, etc.

Super recovery, 360 file restorer, Jinshan data recovery, etc.

III. System backup and recovery

1. Back up the Win10 system

(1) Common system backup tools

Most of them are implemented by Ghost cloning technology based on Symantec.

-- U depth one click to restore the wizard

-- one button to restore Onekey, one button to ghost, etc.

2. Restore the mode of work with one button

(1) U depth one-click restore wizard, one-click restore Onekey-run in the existing Win10 environment, mainly graphics operation

(2) one button ghost

-- hard disk version to add startup items for Win to support stand-alone running environment

-- U disk version, which is started by independent USB disk made in advance.

3. Create a Win10 backup image

Wait for the backup process

Check backup results

Compression processing is performed during the actual backup

The size of the backup file is much smaller than the data size of the system disk.

4. Restore the Win10 system

(1) prepare system backup (a prerequisite for one-click restore)

-- make available system backup files in advance (usually in .gho format)

-- some one-click restore tools support custom backup locations

(2) restore Win10 operating system (perform one-click restore operation)

-- Select the backup location as prompted

-- restart execution after confirmation

(3) waiting for the recovery process

(4) confirm the recovery result

After the recovery is complete

-- system disk C:\ data will be restored to the state it was in at the time of backup

-- after the increase of data will be lost (return the original risk, operation should be careful! )

IV. Disk and file system

1. Basic disk

-- traditional disk, default is basic disk

-- fixed disk size expansion is not convenient, and the number is limited.

2. Dynamic disk (volume): windows 2000 and later operating systems support dynamic disk.

Compared with the basic disk, it has stronger scalability, high reliability and high read and write performance.

V. Overview of basic disks

1. Primary partition: boot operating system

(a maximum of 3 primary partitions are created on the basic disk, and only one primary partition is active)

2. Extended partitions cannot store files directly (multiple logical partitions need to be subdivided).

The number of "extended partitions + primary partitions" does not exceed 4

3. Logical partition: divide the logical partition inside the extended partition (you can't start the operating system directly)

4. Management operation of basic disk

Right-click this computer-manage-Storage-disk Management-Select the unallocated space of the disk-

Right-click (create a new simple volume)-- Select size-- OK

Select the established partition of the disk-right-click-format

1) create primary partition 2) create unfolded partition 3) create logical partition

VI. Dynamic disk

1. Right-click the basic disk-convert to dynamic disk

(dynamic disks cannot be converted to basic disks unless all simple volumes are deleted)

2. Create a new simple volume

3. Expand simple volumes

4. Create a new cross-area volume

At least two dynamic disks are required

Capacity is the sum of all the disk space that makes up the spanned volume

5. Create a new striped volume

(1) the size of the member capacity is the same; (2) the data is evenly distributed alternately across disks in the form of bands.

(3) at least two dynamic disks are required; (4) the capacity is the sum of all the disk space that makes up the striped volume.

6. Create a new mirror volume

(1) have the function of failover; (2) copy the fault-tolerant volume of data on two physical disks

(3) only two disks of the same size are needed; (4) the capacity is half of all the disk space that makes up the mirrored volume

7. Repair mirrored volumes

Steps:

① shutdown, remove the faulty disk and replace it with a new disk; ② starts the computer, storage-disk management

③ initialization disk converts to dynamic disk

Mirror drive letter before ④ right-click-select delete image-select lose-delete image-OK

Right-click the failed mirror volume-add Mirror

8. Create a new RAID-5 volume

Write the data separately to the hard disk and establish a parity data information.

It has high disk utilization, readability and reliability.

At least three hard drives with the same disk space are required

Capacity is number of disks-1

9. Repair the RAID-5 volume

Steps:

Shut down, remove the faulty disk and replace it with a new disk

Start the computer, management tools-computer management-storage-disk management

Initialize disk to dynamic disk

Right click before RAID-5 Volume-repair Volume

Comparison of seven and five types of dynamic disks

Create an extended partition-you can also click with the command

① executes the Win + R-Cmd command

② diskpart

③ select disk + disk area (1, 2, 3)

④ Create partition extended size = disk size (e.g. 300m)

⑤ Exit

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