First part backup
First, what is backup
? Backup, that is, prepare a separate
– Copying data from an electronic computer storage device to a mass storage device to cope with possible contingencies such as file, data loss, or corruption
Ii. Categories of Backup objects
1. System backup
– Backup for the entire operating system
– Quickly recover from backups when the operating system is damaged or fails to start
2. Data backup
– Backup for user's data files, applications, databases
– When the data is lost or damaged, it can also be restored by backup
3, Data Cold backup
? What is cold backup
– Means to perform a backup if the document that needs to be backed up is not occupied
– such as shutting down the database software and making backups of database data
? Advantages and disadvantages of cold backup
– Advantages: Simple, fast, easy to restore to a point in time, easy to maintain
– Cons: Can only be restored to a point in time, the data inconvenience during the backup normal use
4, Data hot backup
? What is hot backup
– means that performing a backup does not affect the way in which the backed up documents are used properly
– for example, database software is running and database data is backed up
? Advantages and disadvantages of hot backup
– Advantages: Short backup time, no impact on data usage, up to seconds recovery
– Cons: All operations will be synchronized, including "delete"
Homework:
Use Windows system system to back up files, create images
Utilizes third-party software data recovery
Backup with third-party software systems
Basic Disk partition Management
Part Two Disk Management
One, disk type
1. Basic disk (partition):
Primary partition: Boot operating system (basic disk up to 3 primary partitions, only one primary partition is active)
Extended partition: Cannot store files directly
Logical partitioning: Partitioning logical partitions within extended partitions (cannot start the operating system directly)
2. Dynamic Disk (volume): Windows 2000 and its later operating systems support dynamic disks, which are more scalable, reliable, and read-write performance than basic disks.
Second, the basic volume management
1. Compressed volume
2. Install new disk
1) Create primary partition
2) Create an exhibition section
3) Creating Logical partitions
Three, dynamic disk
Dynamic Disk volume management
1. Basic disk conversion to dynamic disk
right mouse button Basic disk--Convert to Dynamic disk
(Primary partitions and logical partitions are automatically converted to simple volumes and cannot be converted to basic disks unless all volumes are deleted)
2. Create a new simple volume
3. Expand Simple Volume
Consolidate unallocated space into a simple volume to increase its capacity
Precautions:
4. Create a new cross-region volume
A spanned volume is a logical volume that consists of several unallocated space on different disks
Requires at least two dynamic disks
Capacity is the sum of all disk space that makes up a spanned volume
5. New Stripe volume
A striped volume is a logical volume that consists of multiple unallocated space on separate disks
Each member of a striped volume has the same capacity size
Data is evenly interleaved across disks in striped form
Requires at least two dynamic disks
Capacity is the sum of all disk space that makes up the striped volume
6. Create a new mirrored volume
The mirrored volume has a fail-over conversion function,
A fault-tolerant volume that replicates data on two physical disks
Only two disks of the same size
Capacity is the half of all disk space that makes up a mirrored volume
7. Interrupt, delete the image and delete the volume
Interrupting a mirrored volume makes the mirrored volume two simple volumes
Deleting a mirror removes a member from the mirrored volume
Delete unused volumes
8. Repairing the mirrored volume
Steps:
Shutdown remove failed disk swap in new disk
Start the computer, Computer Management | Storage | Disk Management
Initializing a disk to a dynamic disk
Right-click before mirror drive letter | Select Delete Mirror
Select Lost | Remove Mirror | Are you sure
Right-click a failed mirrored volume | Add Mirror
9. New RAID-5 Volume
Data is distributed to the hard disk and a parity data message is created
High disk utilization, read and write performance, and reliability
Requires at least three disks with the same disk space
Capacity is disk number-1
10, Repair RAID-5 Volume
Steps:
Shutdown remove failed disk swap in new disk
Start the computer, Computer Management | Storage | Disk Management
Initializing a disk to a dynamic disk
Right-click before RAID-5 volume | Repair volume
Comparison of four or five dynamic disk types
Volume types of disks can be used to store data capacity performance failover
Simple Volume 1 All
Cross-region volume 2~32 all unchanged No
Striped volume 2~32 all read and write promotion many without
Mirrored Volume 2 half read promotion, write down, support fault tolerance, general operating system placed in this volume
Yes
RAID-5 Volume 3~32 disks-1 read boost, write down, support fault tolerance, read faster, general data placed in this volume
Small white learning Windows sixth------Backup/disk volume
