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 DuraCloudBoxTrusted Cloud DriveNDS BADSSPithos+GoogleDriveDropBoxSpiderOakPowerFolderSkydriveSugarSyncOwnCloud
OrganisationInternet2Internet2TERENA CommunityPSNCGRNETGoogleDropBoxSpiderOakPowerFolderMicrosoftSugarSyncCommunity
Service jurisdictionUSAUSA PolandGreeceUSA / EUUSA / EUUSAGermany   
STORAGE BACK-END
Back-end storage provider

Amazon S3

RackSpace

SDSC

Box.net

Amazon S3

Local file system

PSNC

GRNET

Google

Backupify

Amazon S3SpiderOakPowerFolderMicrosoftSugarSync

SAN

Local file system

Amazon S3

DropBox

GoogleDrive

RemoteStorage

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

HSM

Disks at 10 locations

SAN

Local file system

n/a

 

n/an/an/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 limit2 GBno limit 
User metadata inclusiontaggingcommentingtaggingannotationtagging      irods-iCAT like extensive metadata planned
Service platform locationAmazon EC2Box.net<service provider>PSNCGRNETGoogleDropBoxSpiderOakPowerFolderMicrosoftSugarSync<service provider>
Metadata/Key store locationamazon EC2Box.net<service provider>PSNCGRNETGoogleDropBoxUserPowerFolderMicrosoftSugarSync<service provider>
Platform codeOpen-sourceClosedOpen-sourceOpen-source plannedOpen-sourceOpen-sourceClosedClosedClosedClosedClosedOpen-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 connectionYesYesYesYesYesYesYesYesYesYesYesYes
Data stored encryptedYesNoYeson tape mediaNoNoNoYes NoYesYes
End-to-end encryptionNoNoNoplannedNoNoNoYesNo   
SERVICE FRONT-END
Access from web browserYesYesYesYes (planned to close)YesYesYesYesYesYesYesYes
Upload from web browserYesYesYesNoYesYesYesNoYesYesYesYes
REST APIyes no yes       
WebDAV client  yesyes    yes  yes
Native client  for Mac and iOS only

SFTP

GridFTP

(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

 iOS      

Android

iOS

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

OpenID

LDAP

Owner of storage back-end accountUserUser<service provider>UserUserUserDropBoxUser UserUser 
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 GB7 GB5 GB 
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