StorageCraft ShadowStream technology is a high-performance transfer tool. This transfer tool lets you send StorageCraft ShadowProtect backup image files to a remote site such as a second office, a co-location facility, or public or private cloud.
ShadowStream is part of StorageCraft ImageManager backup management software, but you need to buy a job license to enable it. Any IT professional who uses StorageCraft ImageManager and needs to replicate backup image files offsite can take advantage of ShadowStream.
In low-bandwidth, high-latency, or high-packet-loss network conditions, ShadowStream is faster than File Transfer Protocol (FTP). Under these conditions, ShadowStream can significantly reduce the time needed to transfer backup image files. In high-bandwidth network conditions, ShadowStream makes efficient use of bandwidth, resulting in rapid offsite replication and maximum available bandwidth for other traffic.
ShadowStream, along with ShadowProtect and StorageCraft ImageManager, is part of StorageCraft Recover-Ability. This disaster recovery solution provides you with the tools you need to recover your Windows machines every time, everywhere, from any disaster.
In both instances, ShadowStream is a fast, reliable method for transferring backup images.
Note: Although ShadowStream is fast and reliable, you should base your choice of file transfer tool on the network between your local and remote sites. StorageCraft offers another excellent option for high-speed data transfers called StorageCraft intelligentFTP (iFTP) technology.
Also a part of StorageCraft ImageManager, intelligentFTP might be the better option, depending on your network typology. See ShadowStream Performance Benchmarks and Best Practices to learn about the differences between ShadowStream and iFTP.
ShadowStream transfers StorageCraft ShadowProtect SPX and StorageCraft ShadowProtect backup image files, and it is part of StorageCraft ImageManager backup management software. But you need to buy a job license to enable it.
When you buy a ShadowStream job license, you receive a product serial number that contains one or more job licenses. You can assign these job licenses to the same or different computers, and you can move them between computers as needed. Each ShadowStream license supports one remote (offsite) replication job using ShadowStream.
ShadowStream Server (including the administrator console) supports Windows Server operating systems.
For a list of those supported operating systems as well as requirements, see:
Supported Operating Systems for the ShadowStream service and administrator console:
Shadowstream replication communicates bi-directionally. This requires that the UDP ports are opened on both the source and destination networks for both the incoming and outgoing direction.
ShadowStream uses these UDP ports by default:
Confirm access to these UDP ports through your firewalls to successfully run ShadowStream.
The Maximum Transmission Unit (MTU) size needs to be a static setting. It also needs to be the same on both the source and destination network.
StorageCraft has determined that the default MTU, in many cases is 1500. Some items require a specific MTU (for example PPOE requires an MTU of 1492). StorageCraft recommends analyzing your environment and evaluating what the specific settings for your network should be. This will help you properly select the right MTU.
If you have multiple customers who replicate to your system with different MTU sizes, you need to setup multiple receiving servers to match the MTU size for each specific customer.
Although ShadowStream is fast and reliable, you should base your choice of file transfer tool on the network between your local and remote sites. StorageCraft offers another excellent option for high-speed data transfers called StorageCraft intelligentFTP (iFTP) technology.
Included with StorageCraft ImageManager, intelligentFTP might be the better option, depending on your network topology.
To learn about the differences between ShadowStream and iFTP, see ShadowStream Performance Benchmarks and Best Practices.