Protect critical data
Product white paper
Si Rui Jia (Beijing) Information Technology Co., Ltd
Key data is an important driving force for the development of enterprises and social development. How to store and restore data to the company
Long, profitability and the most powerful position in the marketplace are getting heavier.
A few years ago, storage administrator's backup and recovery tools were also very limited: tape backups were used by administrators to protect numbers
According to the main tool, because then the disk is very expensive.
Although the tape has been in the past few years in terms of throughput and capacity
Has made significant progress, but the tape is still a sequential access to the media, very inflexible. along with
The decline in disk prices and the steady rise in functionality, more and more administrators began to use the disk as a backup tool,
To get rid of the limitations of the tape drive.
Sina Archives is a hard disk-based network data backup and recovery product that supports Windows and Linux terminals and
Servers and other multi-platform, regular automatic or incremental backup, support for self-service users, according to the time point
View backup data files, remote quick recovery to the specified backup version, and provide high security and scalability.
2. Disk and tape backup comparison
2.1. Disk can be faster, more flexible, more efficient, lower cost for backup and recovery
- In most cases, data is backed up to disk, and recovery from disk is faster than tape.
- basically eliminates the limitations of the backup window.
- can be more frequent backup, reduce the risk of data loss.
- can arbitrarily read a piece of backup data, greatly facilitate the management of operations.
- It is easier and quicker to create recovery data from disk backups.
- Tape is still difficult to operate on backup media and requires professional training.
- the disk naturally has the ability to synchronize backup, and the tape generally need to use more complex technology, and in the recovery
It is more troublesome to synchronize backup data.
- For those companies that do not have the daily data backup needs, the initial cost of the disk backup product
The tape scheme is much lower.
- The above disk backup high-speed, flexible, and efficient, can effectively reduce the system administrator workload,
Help to reduce overall costs.
2.2. Tape technology still has the advantage
- Tape has less storage requirements than disk. Putting the tape in the box or in the library does not require current or cooling.
- Tape is more solid than disk.
Tape can be placed in the box, can withstand beating, more resistant than the disk drive
Wear and tear; and the disk will need to be carefully packed before transport.
- Tape is still cheaper than disk. The new high-capacity tape is much cheaper and cheaper than today's disk capacity.
- Tape is still the best medium for long and offsite storage.
If the advantages of the tape backup product above are significant in your business data backup operation, you still need to test
Choose a tape solution.
3. Si Rui archived product features
3.1. Multi-platform support
Real enterprise information environment, there are often multi-system platform, and now the market part of the data backup and recovery
Products can only support a single platform, compatible with multi-platform products are often large manufacturers of foreign manufacturers to tape equipment
Mainly, the price is high and the maintenance is complex.
If the data and backup recovery products can only be compatible with a platform, the enterprise does not
Do not purchase a number of products, high investment, maintenance is also troublesome.
Sina Archives supports data backup and recovery for mainstream operating system platforms such as Windows and Linux distributions
Ben, the terminal PC and the server has a very good support.
3.2. Full and incremental backups
Sina Archives supports full and incremental backups, and administrators and users can flexibly set up full backups and increments
Of the time interval, and the number of incremental backups between each full backup.
In a full backup, each file in the specified storage device or directory is written to the backup server. Such as
If there is no change in the data between the two backup points, then all the backup data is the same. Do not have a full backup
Will check since the last backup, the file has not been changed, but copy all the data.
This is also a complete backup of the weak
Point: even if all the files are not changed, or will occupy a lot of storage space; if the daily changes in the data only
10MB, but to spend 10GB of storage space to do the backup.
Unlike a full backup, incremental backups are judged first before the data is backed up, and the last modification time for a particular file is
No later than the last backup time, or whether the content has changed. If not, it means that since the last backup
Block data has not been changed, so this time do not need to backup.
In other words, if the modified date is changed last time
Date late, or content changes, then the file was changed, need to back up. Incremental backups are often associated with full backups
Combined, for example, every Sunday to do a full backup, then do incremental backups every day.
The advantage of incremental backups is the speed of backup and the storage space: it is much faster than the full backup
Because the incremental backup in the backup will automatically determine the backup point before and whether the file has been changed, so compared to the end
The full backup of its storage space is also a great benefit.
In general, the incremental backup of a tape system based on sequential accesses is that the data reduction time is
Long, the efficiency is relatively low. For example, if you need to restore the entire storage system, you have to go back to the last time
Complete backup, replace tape, restore an incremental backup, and then repeat this step until you restore to the latest version.
However, Sina archives do not have this disadvantage.
Disk-based backup products can read both full and incremental backups
In the data, automatically pick out the latest version of a particular file, and directly restored to the storage device, without the administrator
Or too much intervention by the user.
3.3. No proxy mode and proxy mode
Sina archives support agentless mode, no need to install additional agents on the terminal or live server backup software, in Windows
Platform through the SMB protocol,