Week 10 Activity 4. Owncloud as locally hosted file storage system

I live in Shanghai in China. Most of file foreign-hosted file storage website do not work here. As a solution to this problem, I installed owncloud on school server to allow all teachers to use school-based cloud storage system. It has community edition and enterprise edition.

Community edition is free of cost. Here is list of features and differences between the community edition and enterprise edition.

ownCloud Community or Enterprise Edition.



Community Edition

Enterprise Edition


(Must share customizations with Community)

ownCloud Commercial License for
ownCloud Server Core and Enterprise Modules

Deployment Options

On-Premises, Hybrid, Cloud

On-Premises, Hybrid, Cloud

Onboarding/Migration Assistance


Dedicated Deployment Manager


Community Forum (free) or Standard Subscription (8×5)

Enterprise Subscription (12×5) or Custom Subscription (up to 24×7)



Multi-Language Support


Intuitive Web-Interface


May be branded

Desktop Clients for Windows, MacOS & Linux


Mobile Clients for iOS & Android

0,99 € / 0,99 $

Included in Subscription,
may be branded

Active Directory/LDAP Integration


Branding with ownBrander


ownBrander Self Service included
(may be extended with ‘Branding Consulting Package’
or ‘Branding Subscription’)

Oracle DB Support




Community Edition

Enterprise Edition

Activity Stream


Content Sharing


Federated Cloud Sharing


Sharing Permission Management








Video Streaming


Image Gallery


Large File Support (>4 GB)


Upload Chunking/Resuming


Collaborative Editing of Office Documnts with Collabora Online

(not supported)


Microsoft Outlook Plugin



File Drop


File Tagging

Admin-Defined, User-Defined

Admin-Defined, User-Defined, Auto- & Group-Tagging

File Versioning


File Comments


File Locking






Guest Access



Workflows (Automated File Operations)


Full Text Search



Password Policy


Extensibility through ownCloud App Store

Community contributed:
Music, Video, Notes
+ 200 more

ownCloud Apps
certified for the enterprise



Community Edition

Enterprise Edition

Storage Infrastructure Consolidation


Primary storage

Local storage, GlusterFS/Red Hat Storage, OpenStack Swift

Local storage, Amazon S3,
Ceph S3, OpenStack Swift, GlusterFS/Red Hat Storage

Secondary storage

FTP, Dropbox, Google Drive,

S3, FTP, Dropbox, Google Drive,

Microsoft SharePoint Integration


Windows Network Drive Integration




Community Edition

Enterprise Edition

2-Factor Authentication


Active Session Management




Encryption of Primary Storage (AES-256), Key management


File Firewall


Auditing/Logging Module


SAML/SSO Authentication


Technical Toolbox


Community Edition

Enterprise Edition

Command Line Interface (CLI)


Provisioning APIs




OpenCloudMesh API


Sharing API


Capability API


Public ownCloud Server Core API



Source: https://owncloud.com/community-or-enterprise/

The major difference that I noticed between the community edition and the enterprise editions is sync application availability for mobile devices. These applications are not available for the community edition but it does not cause any problem for our local installation because teachers used it to keep their work on laptops in sync with school server. I have not heard any request from any teacher to sync it with their mobile devices.

Guest Access, Workflows (Automated File Operations), Full Text Search, Password Policy is also not available in the community edition but these things are not needed at small scale level. As to the full text search, a copy of all these files  is always available on desktops so one can use windows and mac features to search through files if one has to do full text search. Limitations only apply when one try to access files form the web interface. Password policy defines character length, character types for user password. In community editions, it allows to create password with any alphanumeric characters, which is sufficient. I have been using i

 I live in Shanghai in China. Most of foreign-hosted (non-Chinese) Cloud-storage websites do not work here. As a solution to this problem, I installed owncloud on school server to allow all teachers to use school-based cloud storage system. Today, I found one cloud hosting site that still works in China. This is flipdrive.

It provides 10 GB Cloud Storage, 25 MB File Size Limit, Up to 10 File Sharing Links and Up to 10 Folder sharing for free as its basic plan. If one need more space then the basic plan can be upgraded to the personal plan, that offers 25 GB Cloud Storage, 1 GB File Size Limit, Unlimited File Sharing Links, Unlimited Folder Sharing and Direct Links to Files. Moreover, it also provides the mobile application to keep your photos, contacts, and bookmarks synchronized with one’s cloud storage. I don’t think I will use because sooner or later it is going to be blocked here. There are better services like dropbox and one driver available but they are blocked in China.

Source: https://www.flipdrive.com/site/pricing

Week 10 Activity 2: Mole

Learning objective: 

  1. Students will understand mole as a counting unit
  2. Students will be able to convert mole to mass and vice versa


First I selected a topic that can be suit use of this form of media. After that, I modified the PowerPoint presentation that I used to teach F2F classes. Then I prepared script to narrate with the screen cast. I had downloaded Screencast-o-Matic to record my screen but my computer’s audio input has some problem. So I could not record my voice. Then I used my phone to record my voice. Then I have Chinese cloud software on my phone and PC to transfer audio files. Then I used Audacity to trim some “ums” of my audio files. I saved my PowerPoint slides as images and imported images and audio file to the windows Movie Maker. Then next challenge was to sync audio with slides. That took about two hours. Windows movie maker always forget to import last few seconds of my audio files so I had to use audacity to cut last few seconds from my original audio file and then I imported that into the Movie Maker. I wonder if other people also have the same problem with the movie maker. If you have any solution to this problem then please let me know.