Six major problems besetting small and medium sized enterprises ' data-streamlining deployments

Data de-duplication and data compression can significantly reduce the performance requirements of the datastore, saving more than 90% of http://www.aliyun.com/zixun/aggregation/14344.html "> Data Backups." Reduced backup data can reduce the cost of hardware and management. However, these technologies are often unavailable to small and medium-sized enterprises and departments, and there are some reasons, including lack of practical experience.

Here are some common problems with data backup:

1. Should we use duplicate data deletion or data compression or both?

. Data deduplication and data compression are relatively independent and complementary technologies that can be used together to reduce data backups by more than 90%. Used alone, although either of these technologies can effectively reduce backup to disk, the overall data reduction strategy includes both data de-duplication and data compression. If you use data compression to reduce the percentage of backup data by up to 2:1 and use de-duplication to achieve 10:1 reduction in backup data, you can reduce the total data backup ratio by up to 20:1.

2. Is hardware based data compression good or software-based data compression good?

There are two things to consider, especially the need to consider data compression processing, so when deploying a hardware-based solution, consider its impact on backup performance. hardware-based data compression devices also have the advantage of compatible preconfigured applications without the need to purchase, install, configure, and manage those fragmented products. When looking for a data backup reduction device, do not consider a separate backup server because it increases the complexity of the backup and increases the overall cost of the backup infrastructure. A "full-featured" Backup data restore device requires a variety of solutions.

3. Tape backup systems include data compression. Why can't we use hardware compression in a backup-to-disk system?

Disk compression is traditionally file-based. Hardware compression is done on a block of data, not on a file. Until recently, the problem of block based data compression on the hard disk was overcome. Data compression backup devices now introduce hardware-based disk compression.

4. How about remote server backup and offsite backup for disaster backup?

Backup data compression must address backup servers at both the headquarters and remote studios and send backup data to the disaster recovery (DR) station. Backups should be single, continuous, centralized, and manageable.

5. Can the same data reduction device be used for backup of master data?

In general, duplicate data deletion and compression are used in different ways on the master data. Primary storage duplicate data deletion on a block of data is applied to the disk. Windows and Linux file systems are at the beginning of a block of data. This means that primary storage duplicate data deletion will always identify the duplicate blocks of data in the file. In addition, duplicate data can be detected in the database or across databases. On the other hand, the backup application establishes the file, the. tar and. zip files are equivalent, and the data blocks are not always arranged in the same way, so backing up a duplicate data removal application is more difficult than the primary data de-duplication.

6. Why is the price of data compression equipment so big?

It's not right to compare prices. The cost of each TB backup to disk should be the benchmark. How many concurrent backups can be supported? What are the impact on backup performance? If you are not aware of these problems, you will spend more money to buy entry-level products.