Zextras Powerstore and single-tier storage systems

    Zextras Powerstore is one of the most powerful and advanced zemlets in the Zextras Suite. Of course, it not only allows you to compress data and use deduplication algorithms to save hard disk space, but also adds hierarchical volume management to Zimbra. It is the ability to work comfortably with HSM that often becomes the killer feature for which enterprises acquire and implement Zextras PowerStore. That is why in IT circles there was a misconception that PowerStore can only be effective in systems with hierarchical organization of storage, and in single-level systems it will be useless. Well, that's not at all the case.


    The fact is that PowerStore, although it is being developed in Italy, is a kind of “Swiss knife,” which will surely find application in any enterprise that uses Zimbra. For example, the same deduplication will save space even when using single-level storage. The only difference is that in hierarchical systems repeated attachments and pieces of text are stored in the primary repository, and in the secondary repositories only transparent references to them are stored, while in the case of single-level storage both the original object and transparent references to it will be stored in one place.

    Yes, it will not be as reliable as when using multi-level storage, but it will still significantly save space on your hard disk, and when using compression at the same time, you can save up to 50% disk space. Thus, through the use of Zextras PowerStore, the company's IT manager can delay the transition to multi-level storage and, in a calm environment, choose between cloud and local storage, as well as hold a tender to select the best supplier of hardware or services. Due to this, you can save money.

    Another advantage is the acceleration of the search. Because Zextras PowerStore indexes attachments and deduplication emails, the resulting data can be used to quickly search text documents and other attachments. Currently, MS Office, Libre Office, various unencrypted archives, PDF files, and more are supported. Although accelerating the search is not a feature that can directly reduce the cost of owning a server from Zimbra, it can still significantly improve the efficiency of employees who often use email search. These include, for example, accountants and sales staff.

    But the main value of Zextras PowerStore for enterprises with single-tier storage, of course, lies in the ease of switching to multi-level storage. A convenient graphical environment and reliable algorithms will make the transition to the new architecture as simple and painless as possible. So, you can add secondary storage directly in the administration console Zimbra. You can also choose whether the new volume will be local or cloudy. Supported and work from the command line. You can create a secondary volume by typing zxsuite powerstore doCreateVolume and specifying the necessary parameters and attributes, including:

    • volume_type - Storage type. May be primary, secondary or index
    • volume_name is the name of the repository
    • volume_path - storage path
    • volume_compressed - use compression
    • compression_threshold_bytes - the minimum size of files in bytes that are compressed


    For example, by entering the zxsuite powerstore docreatevolume secondary "volume 2" "/ opt / zimbra / volume_2 /" volume_compressed true compression_threshold_bytes 4096 we get a new secondary volume called "volume 2" located in / opt / zimbra / store_2 /, in which All files are between 4 kilobytes and above.

    If it is necessary to make changes to the existing secondary volume, then you can use the zxsuite powerstore doUpdateVolume command and the above attributes. For example, using the zxsuite powerstore doupdatevolume 2 secondary “volume 3” "/ opt / zimbra / volume_3 /" volume_compressed false console commandwe will rename volume number 2 to “volume 3”, which will now be stored / opt / zimbra / store_3 /, and also turn off compression on it.

    You can delete a secondary volume using the zxsuite powerstore doDeleteVolume command . For example, the zxsuite powerstore doDeleteVolume volume 3 command will delete the secondary volume we created.

    Thus, Zemtras PowerStore's zemlet can be useful not only for those enterprises that already use hierarchical storages, but also for those who are only planning to switch to a more cost-effective multi-level storage.

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