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 DuraCloudBoxTrusted Cloud DriveNDS BADSSPithos+GoogleDriveDropBoxSpiderOakPowerFolderSkydriveSugarSyncOwnCloud
OrganisationInternet2Internet2TERENA CommunityPSNCGRNETGoogleDropBoxSpiderOakPowerFolder Microsoft SugarSync Community
JurisdictionService jurisdictionUSAUSAEU PolandGreeceUSA / EUUSA / EUUSAGermany   
STORAGE BACK-END
Back-end storage provider

Amazon S3

RackSpace

SDSC

Box.net

Amazon S3

Local file system(Jclouds API planned)

PSNC

GRNET

Google

Backupify

Amazon S3SpiderOakPowerFolder  MicrosoftSugarSync

SAN

Local file system

Amazon S3

DropBox

GoogleDrive

RemoteStorage

 

Sync among back-end providersYesn/aplannedn/an/aYesn/an/an/a  n/an/aYes 
Back-end storage technologyn/aSAS-70 Type IIn/a

HSM

Disks at 10 locations

SAN

Local file system

other adapters

n/a

 

n/aGoogle Ganetin/aGoogle Ganetin/an/aSAS 70,Type II 
Back-end API compatibilityn/an/a

Jclouds planned

Generic S3 planned

 OOS API n/a n/an/an/a 
Storage data formatblob store for any bitstreamfile system likefile system likefile system likeblock storagefile system likefile system likeblob store for any bitstream   file system likefile system likefile system like
STORAGE SERVICE PLATFORM
Single filesize limit5 GB2 GB5 GBno limit 10 GBno limitno limitno limit 2 GB no limit 
User metadata inclusiontaggingcommentingtaggingannotationtagging       irods-iCAT like extensive metadata planned
Service platform locationAmazon EC2Box.net<service provider>PSNCGRNETGoogleDropBoxSpiderOakPowerFolder Microsoft SugarSync <service provider>
Metadata/Key store locationamazon EC2Box.net<service provider>PSNCGRNETGoogleDropBoxUserPowerFolder Microsoft SugarSync <service provider>
Platform codeOpen-sourceClosedOpen-sourceOpen-source plannedOpen-sourceOpen-sourceClosedClosedClosed Closed Closed Open-source
Code languageJavan/aScala

C/C++/C#

PHP

Ajax

(Java GUI planned)

Python

Python

Haskell

n/an/an/a

C#

SQL Server

Azul

  

PHP

 

JavaScript

SSL client connectionYesYesYesYesYesYesYesYesYes Yes Yes Yes
Data stored encryptedYesNoYeson tape mediaNoNoNoYes  No Yes Yes
End-to-end encryptionNoNoNoplannedNoNoNoYesNo   
SERVICE FRONT-END
Access from web browserYesYesYesYes (planned to close)YesYesYesYesYes Yes Yes Yes
Upload from web browserYesYesYesNoYesYesYesNoYesYesYesYes
REST APIyes no yes       
WebDAV client  yesyes    yes  yes
Native client  for Mac and iOS onlyDesktop client

Client side sync utility

REST API

 WebDAV

SFTP

GridFTPWebDAV

(FileSystem 4 Linux and 4 Windows with on-the-fly encryption and digests planned)

yes      

Windows

Mac

Linux

Proprietary clientClient side sync utility no     yes   
Mobile clients  

Android

iOS

 REST APIiOS   WebDAV    

Android

iOS

Sharingprivate, publicprivate, public, groupplannedinside profile (public planned)private, public, group  plannedprivate, public, group private, public, group  
Federated accessInCommonInCommoneduGAINplannedShibboleth  planned   

OpenID

 

LDAP

Owner of storage back-end accountUserUser<service provider>UserUserUserDropBoxUser User User  
SERVICE OFFERING
Cost per annum 100 GB     46.21 EUR76.40 EUR92.61 EUR  37.00 EUR115.76 EUR  
Cost per annum 1 TB1157.59 EUR468.00 EUR   462.94 EUR770.18 EUR926.07 EUR  370.00 EUR615.84 EUR  
Default free storage 5 GB   5 GB2 GB2 GB2 GB 7 GB 5 GB 
Comments 
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