StoneFly, a wholly owned subsidiary of DNF Corporation offers storage appliances which run on the company’s patented network operating system called StoneFusion. StoneFly’s StoneFusion based Snapshots are designed to offer quick, efficient point-in-time replicas of SAN volumes for data recovery, testing, business continuity and more.
StoneFly’s each delta based snapshot acts as a virtual, temporary, and perishable point-in-time image of an active live volume. The snapshot volume appears to any host as if it was a regular logical volume and can be mounted as read-only or read-write. Even after changes are made to the original volume, delta based snapshots preserve a copy exactly as it existed when it was taken. Any read or write operation do not impact the primary volume. Snapshots persist across reboots and can be mounted and accessed just like any other volume.
Now coming to the benefits offered by StoneFly Snapshots
StoneFly Delta based snapshots offers storage admins an efficient way to identify and return to specific virtual disk data. This will make disaster recovery situations simpler
Application testing- In enterprise IT environments, snapshots provide a way to perform test activities on a consistent and re-usable copy of operational data while the source data remains unaltered. Therefore, the fear of data corruption and system failure will get super minimized by testing against a persistent image of real data before bringing new application changes on-line. In the meantime, the actual copy of data remains accessible to users and so no downtime can be witnessed.
StoneFly delta based snapshots offer a way duplicate data very quickly.
Snapshots provide a way to perform faster and more frequent backups translating to faster recovery from data corruption problems and gives error protection to user data
StoneFly Snapshots provide a way to present multiple copies of the same virtual disk to multiple hosts. In other words, multiple users can have individual copies of the same data. This helps in reducing data traffic in the SAN/LAN, increases performance and data availability and allows better scalability.
On an additional note, StoneFly Snapshots can be automized by users at predetermined regular intervals using the snapshot scheduler which can be customized to take automatic snapshots on hourly, daily and weekly basis.
Remember, snapshots are not replication, like StoneFly Reflection (Synchronous Mirroring). This means, an exact copy will mean that five snapshots require five times the storage space of the original. This is where snapshot feature offered by StoneFusion of StoneFly differs a bit. Instead, the snapshot feature of StoneFly uses Copy-On-First-Write mechanisms that only copy data blocks if and when an application changes them.
Rollback is a disaster recovery feature that allows users to return to the last known “Good” data point in the event of corruption, viruses or lost files. Yeah, it is similar to the function offered by your Dell or Lenovo laptop, which can be recovered in safe mode, when any new update doesn’t go really well. On performing a rollback, a live volume returns to a known state of one of the snapshots. All writes that have been completed since the snapshot was taken are overwritten so that the live volume appears just as it was when the snapshot was taken. Users can rollback multiple times till the desired result is obtained. Similar to that of a word/excel file feature in MS office, where you use the back button to go to the instance of your requirement.
To take a look at the StoneFly Delta Based Snapshots features and benefits in a video format, please click on the following link