August 6, 2013
Feature of the Month
The FileCatalyst HotFolder client application has a feature for managing the bandwidth used for file transfers in an automated way. Although the FileCatalyst Server always maintains control of the maximum transfer rate, HotFolder provides the ability to schedule periods of lower bandwidth usage. A common scenario is HotFolder being scheduled to use only a portion of available bandwidth during the work day in order to keep bandwidth free for other business-critical internet traffic. Then outside of office hours, HotFolder is scheduled to use all available bandwidth for transfer tasks.
To use the feature, simply open the HotFolder interface and go to the "Bandwidth" tab, found in the main navigation to the left. On the week-long schedule that appears, drag or CTRL/OPTION-click cells to select them, and then enter a value or choose from pre-configured values.
Enhanced Security Option for Downloads
FileCatalyst Webmail and Workflow allow users to secure the download packages sent to recipients.
The different security option offered are as follows:
- Standard delivery via e-mail, (least secure) (No authentication, recipient sent to download page directly)
- Standard delivery with PIN required (PIN sent in same email as download link)
- Standard delivery using a password (Password must be communicated to recipient by alternate means, i.e phone call, SMS, another email, etc)
- Email authentication required prior to download (most secure) (When the recipient clicks the download link, the system will send the recipient a second email with an authentication code. The authentication code is valid for 15 minutes)
To enable this field access the Webmail or Workflow administration and select "Upload/Job data fields". In the "Quick Add" tab select download method and add new and save the selection.
To add the field to a form from modify configuration select "Upload/Job Forms"; select the form to which you wish to add the field. In the fields tab select "Enhanced Security Option" and add the field. With the field added you must select the hidden box for security pin if you do not you will be prompted to. Remember to submit and save your selection.
Now when a user logs in to submit files they will have the option of selecting the level of security assigned to the downloads.
Poll for Availability
You may be aware that FileCatalyst HotFolder will check the availability of your Sites and HotFolders on start up, but you can also configure periodic checks. In the "settings" area is a tab called “Polling”. There, you can enable Site and HotFolder polling and specify an interval. In addition, the status of Sites and HotFolders is checked when a transfer starts and the UI is updated accordingly.
August Webinar: UDP Accelerated File Transfer - Introducing an FTP Replacement and its Benefits
In our August webinar FileCatalyst CEO Chris Bailey will be giving an overview of UDP based accelerated file transfer and its benefits over other file transfer methods including FTP. This webinar will dive into the technology responsible for the optimized data transfer rates acheived with accelerated file transfer and other file transfer management options including congestion control. Lastly, we will discuss starting points for implementing accelerated file transfer within an organization and things to look for in an accelerated file transfer solution. We hope to see you there!
Date: Thursday, August 22
Time: 3:00 - 3:30 pm EST
Tips and Tricks
Assigning CPU Resources to Processes in Linux
In some cases the FileCatalyst Direct server may occupy significant amount of resources in your system, particularly when server faces high load with large number connected clients and processes involved in high speed data transmission. This may affect other services that run on the same server and the server administrator may want to temporary limit CPU resources assigned to certain processes.
Linux (+2.2) comes equipped with very handy tool called "cpulimit" that allows the specific amount of CPU power to be assigned to particular process. The target process, which can be specified by pid, name, or command line, is continuously paused and resumed with SIGSTOP and SIGCONT signals. Signals are sent by cpulimit in appropriate moments, based on the limit specified by user and the process statistics read from /proc folder.
To limit process "download" (by executable name) to 30% CPU:
cpulimit --exe download --limit 30
cpulimit --exe /usr/local/bin/download --limit 30
Limit a process 2874 (by PID) to 60% CPU
cpulimit --pid 2874 --limit 60
If server has one processor the percentage can be set from 0% to 100%, which means that at 50%, the process cannot use more than 500 ms of CPU time for each second. If server has four processors, percentage may vary from 0% to 400%, so setting the limit to 200% means to use no more than half of the total available power. CPU limit should be run as root user to ensure high priority and precise control.
From the Blog
Moving Large Volumes of Smaller Files
Check out a recap on our July webinar discussing transferring large sets of set files and some elaboration on some features not discuss in the webinar.
Read more on moving large volumes of smaller files.
Prioritizing Transfers in FileCatalyst Direct
FileCatalyst routinely helps users make full use of your bandwidth for file transfer.
Read more on prioritizing file transfers in FileCatalyst Direct.
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