Key terms for storage and backup

There are many terms and emerging technical trends in the field of data backup that are confusing, so they are explained in this article.

This list contains the most basic definitions of data backup, including some definitions you should know about backup, and some content that looks vague but important for data backup.

1. What is cloud backup?

Cloud backup, also known as online backup, is a data backup method that transfers a copy of data to a offline storage site through a private network or public network. Storage is usually hosted by a third-party service provider, who will charge backup users based on capacity, bandwidth, or number of users. Within the enterprise, offline storage may be proprietary, but the charging method is similar.

2. What is a removable medium?

This refers to any type of storage device that can be easily removed from the data center. These include backup tapes, removable hard drives or optical media. Removable media allows users to make copies of data for disaster recovery.

3. What is deduplication on the target side?

The target deduplication technology removes redundant data through a dedicated device between the source and the target during data transmission. You can use any backup software supported by the device. Although deduplication on the target side reduces the storage capacity, it does not reduce the data transmitted through the LAN or WAN during the backup process.

4. What is source-side deduplication?

This processing method removes redundant data before the data is sent to the target. Source-side deduplication products can reduce the use of bandwidth and storage capacity, and many source-side deduplication products support automatic offline copying. This means that deduplication at the source is slower than at the target, especially when there is a large amount of data. Due to the increase in server-side load, this approach may result in a substantial increase in overall backup time.

5. What is centralized backup?

Centralized backup can automatically copy data to a remote site and send the data to a main (centralized) storage site over the network. Centralized backup can be used for automated backup at remote sites, while reducing backup management costs. This method can replace the local backup method that needs to maintain the tape library at the remote site. Although there is no potential security risk due to the loss of tape media in centralized backup, it may make backup and recovery take longer and consume network bandwidth.

6. What is VMware backup?

VMware backup refers to backing up data on a virtual machine in a VMware environment to avoid data loss. VMware backup is just a special case, or virtual server backup, which is a challenge for storage and backup administrators. VMware backup can be done by common backup software, but although this is an extremely simple way, it may also cause resource conflicts. The additional resources required to complete a backup may have a negative impact on the performance of the virtual machine on the physical server being backed up, but VMware's application interface for data protection in this area is being rapidly developed. There are also many VMware-specific backup tools on the market.

7. What is an incremental backup?

Incremental backups only back up those files that have changed since the last backup. For example, if a full backup was taken on Wednesday, the incremental backup on Thursday will be for all files that have changed since Wednesday. However, Friday ’s incremental backup only targets files that have changed since Thursday ’s incremental backup. What is the biggest benefit of incremental backup? As long as only a few files are backed up every day, the backup window becomes very small. The biggest disadvantage? In a complete recovery process, the most recent full backup and all subsequent backups must be restored one by one. This may take quite a long time.

8. What is encryption key management?

As can be seen from this term, encryption key management is a management task that involves encryption key protection, sharing, backup, and organization management. Due to frequent data loss and required compliance, the encryption technology in enterprises has a rapid development trend. There may be hundreds of billions of keys, all of which must be stored securely, fully protected, and ensure easy access.

9. What is remote replication?

You will also guess that remote replication will back up production data to devices at remote sites for data protection or disaster recovery. It can be done synchronously or asynchronously. Synchronous replication writes data to primary storage and secondary storage synchronously. Asynchronous replication has a delay when data is written to the secondary storage. Since asynchronous replication is designed to work in a long-distance environment and consumes a small amount of bandwidth, this is an ideal disaster recovery method. However, asynchronous replication may risk data loss when the system is interrupted, because the data on the target device and the source are not completely synchronized.

10. What is data archiving?

Data archiving refers to migrating data that is no longer frequently used to another data storage device for long-term storage. These data archives generally contain data that may be recalled in the future, as well as data that companies need to save due to compliance. The data archive is usually equipped with an index function and can be retrieved to ensure that the data can be conveniently located and restored.

Clean Paste Stains

The stain is a simple and powerful cleaning agent specially designed for deep cleaning of the ink roller, which has no elasticity and no damage to itself; removes ink stains, mirrors, and restores the elasticity of the ink roller (and blanket); Removes deep gel and smog; non-wearing

No residue on the surface of metal or rubber; colloidal, convenient and practical.

Clean paste Product parameters

Place of Origin: Shanghai, China

Weight: 330g / support

Storage conditions: put in the exercise, in the shade

 Clean paste Instructions

For the ink roller: first wash off the wet ink, apply a proper amount of the spray paste on the drive roller, run at low speed for 5-10 minutes, then wash it off with car wash water, repeat steps if necessary.

For skin-like cloth: hand-apply the stain on the blanket and let it absorb it. It can be placed for one night, then thoroughly cleaned, then avoid the plate.

 Clean paste Features

1. Clear ink stains, mirrors, and restore the elasticity of the ink roller (rubber)

2. Effectively clear deep gel and smog; no residue on metal surface

3. The colloid is convenient and practical. Deep cleaning improves ink delivery performance.

4. Reduce downtime and make it more economical.

5. Containing benzene, it does not damage human health, is not flammable, and is safe to use.

Clean Paste

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Shanghai Chenjie Printing Material Co., LTD ,