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Comparison of online backup services

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This is a comparison of online backup services.

Online backup is a particular kind of file hosting service; however, various products that are designed for file storage may not have features or characteristics that others designed for backup have.

Comparison

Provider Win.1 Linux1 Mac1 Android1 BlackBerry1 iOS1 Encrypted storage Personal Encryption2 Secure Key Management3 Limited MB plan4 Unlimited MB plan4 $/MB plan4 Unlimited BW 4 Provider Cloud hosted Net Drive5 P2P6 Sync7 Autodetect changes12 Public file hosting8 physical media restore9 Server location10 Free online storage (non-trial)13 Maximum per-file size External hard drive support14 Hybrid Option15 Green Hosting ITAR Compliant Provider
Acronis Yes No No No No Yes No ? 250 Gb No Yes Acronis No No Yes  United States,  Europe No No limit Yes No Acronis
ADrive (Paid only) Yes Yes Yes No Yes ? ? ? ? ? ? ? ADrive Yes (WebDAV in paid account)[1] No Yes (Paid only) Yes (Paid only) No Yes ? 50 GB 2 GB(Free) Yes ? ? ? ADrive
AltDrive Yes Yes Yes Yes Optional[2] ? Yes Yes AltDrive No Yes  United States No No limit Yes Yes AltDrive
ASUS WebStorage Yes Yes (only 32 bit) Yes Yes Yes No No ? Yes Yes ASUS WebStorage No Yes Yes Yes Yes  United States, ASIA 5 GB 500 MB Yes No ASUS WebStorage
Backblaze Yes No Yes Yes[3] Optional[3] ? Yes Yes Backblaze No Yes Yes  United States ? No limit Yes ? No Backblaze
Barracuda Backup Service Yes Yes Yes Yes[4] No ? No fee per computer No Yes Barracuda Backup Service Yes[citation needed] No Yes No Yes  United States, APAC,  Europe No ? No Barracuda Backup Service
BitCan [5] No Yes Yes No No Yes Yes No ? Yes Yes Yes Yes BitCan [5] Yes No  United States Yes No Yes ? No BitCan [5]
Bitcasa Yes[6] Yes Yes (Only 64-bit) Yes Yes Yes Bitcasa cannot decrypt data, but uses convergent encryption rather than personal encryption15 [7] ? Yes Yes No Yes Bitcasa Yes[8] No Yes Yes Yes Yes  United States 5 GB[9] No limit[10] No[11] No, Amazon AWS[12][13] No Bitcasa
Box Yes No Yes Yes Yes Yes Yes[14] No[14] ? Yes Yes Box Yes[15] Yes[16] Yes  United States 10 GB 250 MB (Free) 5 GB (Paid) No Box
BullGuard Backup Yes No No Yes Yes Yes Yes[17] No ? Yes Yes BullGuard Backup Yes[citation needed] No Yes Yes  Europe No ? No BullGuard Backup
Carbonite Yes No Yes (Home only) Yes Yes Yes Yes for Windows only[18] Yes (Business only) ? Yes (Business only) Yes (Home only) No[19] No (Yes for Pro only) Carbonite Yes Yes[20]  United States No 4 GB Yes[21] No No Carbonite
Provider Win.1 Linux1 Mac1 Android1 BlackBerry1 iOS1 Encrypted storage Personal Encryption2 Secure Key Management3 Limited MB plan4 Unlimited MB plan4 $/MB plan4 Unlimited BW 4 Provider Cloud hosted Net Drive5 P2P6 Sync7 Autodetect changes12 Public file hosting8 physical media restore9 Server location10 Free online storage (non-trial)13 Maximum per-file size External hard drive support14 Hybrid Option15 Green Hosting ITAR Compliant Provider
CloudMe Yes Yes Yes Yes Yes, via Storage Made Easy client Yes No, but 3rd party apps available ? No Yes CloudMe Yes[22] Yes Yes Yes  Sweden 3 GB 150 MB (Free Accounts) No limit (Premium Accounts) No Limit No No CloudMe
Comodo Backup Yes No No Yes[23] No ? Yes No Yes (5) Comodo Backup No No No No  United States No No Comodo Backup
Copy Yes Yes Yes Yes No Yes Yes No ? 15, 250, 500 GB[24] No[24] No Copy Yes[citation needed] Yes Yes 15 GB No Copy
CrashPlan Yes Yes Yes Yes Yes Yes[25] Yes[26] ? Optional Yes Yes Yes[27] Crashplan No Optional No Yes[28] No Yes  United States,  Australia[29] No No Limit Yes[30] ? No Crashplan
Cubby Yes No Yes Yes No Yes Yes No ? Yes No No Yes Cubby Yes[31] Yes Yes (DirectSync) Yes Yes Yes  United States,  Europe 5 GB with friend referrals up to 25 GB 2 GB (Web Interface) No limit (Desktop client) Yes ? ? No Cubby
DataShell Yes No Yes Yes Yes Yes Yes No ? Yes Online Backup only No Yes DataShell Yes (paid-only)[32] No Yes Yes Yes Yes  United Kingdom No No limit Yes No DataShell
Dolly Drive No No Yes Yes Yes[33] No ? Yes No Yes Yes Dolly Drive Yes[citation needed] No Yes Yes No Yes  United States,  Europe No No limit Yes[34] ? No Dolly Drive
Diino Yes Yes Yes No[35] No ? Optional Yes Optional Yes Diino Optional Yes Yes No No limit ? No Diino
DrivePop Yes No Yes No No No Yes No ? No Online Backup only No Yes DrivePop Yes (paid-only)[36] No Yes Yes Yes Yes  United Kingdom No No limit Yes No No DrivePop
Dropbox Yes Yes Yes Yes Yes Yes Yes No,[37] but 3rd party apps available[38] ? Yes Dropbox No No Yes Yes Yes  United States 2 GB 300 MB (Web Interface) No limit (Desktop client) No No Was Amazon AWS, but references removed from FAQ. No Dropbox
Dropmysite Yes Yes Yes Yes No ? Yes Optional No Yes Dropmysite Yes Yes Yes Global 2 GB No limit ? No Dropmysite
Druva Insync Yes Yes Yes Yes Yes Yes Yes[39] Optional[39] ? Yes[39] Yes[39] No Yes Druva Insync Yes Yes Yes  United States,  United Kingdom, Template:Japan, Brazil, Singapore,  Australia [39] No No limit Yes Yes Druva Insync
Egnyte Yes Yes Yes Optional[40] Optional[40] ? Egnyte Yes[41] No Yes Yes Yes  United States No No limit ? No Egnyte
Provider Win.1 Linux1 Mac1 Android1 BlackBerry1 iOS1 Encrypted storage Personal Encryption2 Secure Key Management3 Limited MB plan4 Unlimited MB plan4 $/MB plan4 Unlimited BW 4 Provider Cloud hosted Net Drive5 P2P6 Sync7 Autodetect changes12 Public file hosting8 physical media restore9 Server location10 Free online storage (non-trial)13 Maximum per-file size External hard drive support14 Hybrid Option15 Green Hosting ITAR Compliant Provider
ElephantDrive Yes Yes[42] Yes Yes[43] Yes Optional (off by default) [44] ? Yes No ElephantDrive Yes[45] Yes[46] Yes Yes[47]  United States 2 GB Yes ? No, Amazon AWS[13][48] No ElephantDrive
EVault Yes Yes Yes Yes[citation needed] ? No No Yes Yes EVault Yes[citation needed] No No Yes Yes  United States,  United Kingdom,  Canada, Ireland No No limit Yes Yes No EVault
FilesAnywhere Yes Partial Yes Yes, via Storage Made Easy client Yes, via Storage Made Easy client Yes, via Storage Made Easy client Optional[49] No[50] ? Yes No Yes Yes FilesAnywhere Yes[51] No Yes Yes Yes Yes  United States 1 GB No limit Yes No FilesAnywhere
F-Secure Yes No Yes Yes[52] No[52] Yes ? Yes Yes Yes F-Secure Yes

 United States,  Europe, APAC, several ISP-specific locations

No 8 GB No ? No F-Secure
Google Drive Yes No, but support will come.[53] Or several 3rd party clients available. Yes Yes No, but 3rd party apps available Yes Yes No ? Yes Google Drive No No Yes Yes Yes  United States, Worldwide 15 GB 1 TB[54] Partial: 34%[55] No Google Drive
Handy Backup Yes Yes No Yes Yes Yes ? Yes Yes Yes Yes Handy Backup No No Yes Yes No Yes  United States,  Canada No[56] No limit Yes Yes No Handy Backup
Hubic Yes Yes Yes Yes Yes Yes Yes No No Yes No Yes ? Hubic No No Yes Yes Yes  France,  Europe 25 GB No limit No No Yes No Hubic
Trend Micro SafeSync Yes Partial Yes Yes, via Storage Made Easy client Yes, via Storage Made Easy client Yes, via Storage Made Easy client No ? Yes Trend Micro SafeSync Yes[citation needed] Yes Yes  United Kingdom No Trend Micro SafeSync
IASO Backup Yes Yes Yes Yes[57] Yes[57] Yes ? Yes Yes Yes IASO Backup No No No No Yes  United States, Worldwide No No limit Yes Yes No IASO Backup
iCloud Yes Yes, via Storage Made Easy client Yes Yes, via Storage Made Easy client Yes, via Storage Made Easy client Yes Yes No ? ? ? iCloud ? ? ? ? unknown ? Yes, 94%[13] No iCloud
Infinit Yes Yes Yes Yes[58] Optional[58] ? No Yes No Yes Infinit Yes Yes Yes Yes No limit Yes Yes No Infinit
Iperius Online Storage Yes No No Yes[59] Optional[59] ? 50, 100, 200, 500 GB No No Yes Iperius Online Storage No Yes Yes No No limit No Iperius Online Storage
Provider Win.1 Linux1 Mac1 Android1 BlackBerry1 iOS1 Encrypted storage Personal Encryption2 Secure Key Management3 Limited MB plan4 Unlimited MB plan4 $/MB plan4 Unlimited BW 4 Provider Cloud hosted Net Drive5 P2P6 Sync7 Autodetect changes12 Public file hosting8 physical media restore9 Server location10 Free online storage (non-trial)13 Maximum per-file size External hard drive support14 Hybrid Option15 Green Hosting ITAR Compliant Provider
Jungle Disk Yes Yes Yes No Yes[60] Yes[60] ? Yes Jungle Disk Yes[61] Yes  United States,  Europe No 5 GB Partial, Amazon AWS[13][62] or Rackspace Cloud Files. No Jungle Disk
KeepVault Yes No No Yes[63] Yes[64] ? Yes No Yes KeepVault Yes  United States 20 GB No KeepVault
KineticD Yes No Yes Yes No Yes Yes No ? No Yes Yes Yes KineticD Yes[citation needed] No No Yes Yes Yes  Canada No No limit Yes Yes KineticD
Livedrive Yes No Yes Yes Playbook only Yes No No ? Yes Online Backup only No Yes Livedrive Yes (paid-only)[65] No Yes Yes Yes Yes  United Kingdom No No limit Yes No Livedrive
MediaFire Yes Upload only [2] Yes Yes No Yes Yes Yes ? Yes No Yes Yes MediaFire No No No No Yes No  United States 50 GB 200 MB No No No MediaFire
MEGA Yes Yes Yes Yes Yes Yes Yes Yes ? Yes No Yes Yes MEGA No No Yes Yes, using MEGAsync client Yes No  Europe,  New Zealand 50 GB No limit No No No MEGA
Memopal Yes Yes Yes Yes Yes Yes Yes[66] No[67] ? Yes Memopal Yes Yes Yes  United States,  Europe, Asia 3 GB 5 GB No Memopal
MiMedia Yes No No Yes[68] No ? Yes No Yes Yes MiMedia Yes[citation needed] No No Yes No No  United States 7 GB 3 GB Yes No MiMedia
Mozy Yes No Yes Yes No Yes Yes[69] Optional[69] ? Yes No Mozy No No No Yes  United States,  Europe 2 GB No limit [70] Yes No No Mozy
OneDrive Yes No, but 3rd party apps available[71] Yes Yes[72] No, but 3rd party apps available Yes No[73] No ? Yes No OneDrive Yes[74][dubious – discuss] Yes 7 GB for new users, 25 GB for older users 2 GB Partial, 29%[13] No OneDrive
OwnDrive Yes Yes Yes Yes Yes Yes Yes ? OwnDrive Yes Yes 1 GB No OwnDrive
Pogoplug Yes Yes command-line only Yes Yes No Yes ? No Yes Yes Pogoplug Yes[citation needed] Pogoplug
SpiderOak Yes Yes Yes Yes Yes, HTML5 client in Q4 2012 Yes Yes[75] Yes[75] ? Yes Yes, Occasional offers for unlimited Yes Yes SpiderOak No[76] No Yes Yes Yes 2 GB No limit Yes Yes[77] No SpiderOak
Provider Win.1 Linux1 Mac1 Android1 BlackBerry1 iOS1 Encrypted storage Personal Encryption2 Secure Key Management3 Limited MB plan4 Unlimited MB plan4 $/MB plan4 Unlimited BW 4 Provider Cloud hosted Net Drive5 P2P6 Sync7 Autodetect changes12 Public file hosting8 physical media restore9 Server location10 Free online storage (non-trial)13 Maximum per-file size External hard drive support14 Hybrid Option15 Green Hosting ITAR Compliant Provider
SugarSync Yes No Yes Yes Yes Yes Yes[78] No[79] ? Yes No No SugarSync Yes Yes Yes (SugarSync account needed for folders) No 100 MB (web) No limit (client app)[80] No SugarSync
Sync.com Yes No Yes No, in development[81] No, in development[81] Yes[82] Yes[82] ? Yes Yes Sync.com Yes Yes Yes (only with Pro account)  United States 5 GB No Sync.com
Syncplicity Yes No Yes Yes[83] No[83] ? Yes Syncplicity Yes Yes  United States 2 GB No Syncplicity
Tarsnap Using Cygwin Yes Yes No No No Yes[84] ? No No Yes Tarsnap No No No No, Amazon AWS[13][85] No Tarsnap
TeamDrive Yes Yes Yes Yes No Yes Yes Yes ? Yes Yes, via self-hosting No Yes TeamDrive Yes[citation needed] No Yes Yes Yes No  United States, Germany, Ireland, Hong Kong 2 GB No limit Yes No, Amazon AWS by default[13][86] No TeamDrive
Tresorit Yes on roadmap[87] Yes Yes No Yes Yes Yes ? Yes No Yes Yes Tresorit No No Yes Yes Yes No  Europe[88] 5 GB 0.5 GB (free), 2 GB (paid)[89] Yes No No Tresorit
Unitrends Vault2Cloud Yes Yes Yes Yes[90] No ? No Yes Yes Unitrends Vault2Cloud Yes[citation needed] No Yes No Yes  United States No No Unitrends Vault2Cloud
UpdateStar Online Backup Yes No No Yes[91] No[92] ? Yes[93] Yes UpdateStar Online Backup  Europe No UpdateStar Online Backup
Wuala Yes Yes Yes Yes No Yes Yes Yes[94] ? Yes No Yes Yes[95] Wuala Yes[96] No Yes[97] Yes Yes  Europe, data distributed in encrypted chunks no longer offered 100 GB[98] Yes Yes: only w/LaCie NAS[99] Yes: 100%[94] No Wuala
Yandex.Disk Yes Yes[100] Yes Yes Yes No[101] No ? Yes Yandex.Disk Yes[102] No Yes Yes 10 GB 10 GB No Yandex.Disk
Zetta.net Yes[103] Yes Yes Yes No ? Yes No Yes[104] Yes Zetta.net Yes[105] No Yes Yes No Yes  United States[106] No No limit Yes Yes Yes Zetta.net
Zmanda Cloud Backup Yes No No Optional[107] Optional[107] ? Yes Zmanda Cloud Backup Yes[citation needed] Yes  United States,  Europe, Singapore, Template:Japan No limit Yes Yes Partial, Amazon AWS or Google Cloud Storage[13][108] No Zmanda Cloud Backup
Provider Win.1 Linux1 Mac1 Android1 BlackBerry1 iOS1 Encrypted storage Personal Encryption2 Secure Key Management3 Limited MB plan4 Unlimited MB plan4 $/MB plan4 Unlimited BW 4 Provider Cloud hosted Net Drive5 P2P6 Sync7 Autodetect changes12 Public file hosting8 physical media restore9 Server location10 Free online storage (non-trial)13 Maximum per-file size External hard drive support14 Hybrid Option15 Green Hosting ITAR Compliant Provider

Legend

  • ^1 Windows/Linux/Mac/iOS/Android/BlackBerry - Supported operating systems for thick client (native binary application), which provide background data transmission and setting services.
  • ^2 Personal Encryption - The user needs to manage their own encryption key or password. If they lose it, there is no way to access the data. The service provider cannot access the user's data even if required by the government.[109][110] Backup service providers often claim that no one can access the users data even though they themselves could if forced to do so, so entries claiming support of this feature should always have a supporting reference. If the backup service has a password recovery or reset mechanism that allows a user to access their data when they lose their password or key, that proves they do not have personal encryption.
  • ^3 Secure Key Management - If yes, the user holds and controls of the encryption key. If no, the service provider holds and controls the encryption key.
  • ^4 Payment method
    • L - Pay per computer. Additional fee for storage over a threshold.
    • U - Pay per computer. Storage per computer is unlimited.
    • M - Pay per unit of storage, but unlimited computers may share that storage.
    • B - Bandwidth capping or limits are used on accounts.
  • ^5 Cloud hosted Net Drive - Cloud can serve storage over WebDAV, SMB/CIFS, NFS, AFP or other NAS protocol, allowing files to be streamed from the cloud. A change made to the cloud is immediately accessible to applications on all clients without needing to pre-download (sync) the file in full.
  • ^6 P2P storage - data spread over many computers based on peer-to-peer net advantages.
  • ^7 Sync - Synchronization between computers, and/or mobile devices (PDA, MDA,...)
  • ^8 Public Internet file hosting -
  • ^9 Restore via physical media -
  • ^10 Server location - countries where physical servers are located. Where the data will be located.
  • ^11 Still in Beta version
  • ^12 Whether the desktop client (if available) can detect and upload changes without scanning all files.
  • ^13 Many backup services offer a limited free plan, often for personal use. Often it is possible to increase the free backup limit through coupons, referrals, or other means that are not included in this column. This column also does not include free trials that are only available for a limited period of time.
  • ^14 External hard drive support - Can refer to an alternate backup destination or whether the service can back up external drives.
  • ^15 Hybrid Online Backup works by storing data to local disk so that the backup can be captured at high speed, and then either the backup software or a D2D2C (Disk to Disk to Cloud) appliance encrypts and transmits data to a service provider. Recent backups are retained locally, to speed data recovery operations.
  • ^16 Bitcasa encrypts each file with a key derived from that file, so a file can be decrypted only if you already have (or have had) the decrypted version. Therefore bitcasa cannot decrypt arbitrary files, but they could e.g. remove a specific requested file or log which users access a specific requested file. There also is a learn-the-remaining-information attack possible.[111][112]

Comments

Acronis
Up to five PCs, always incremental backups, remote access from the web
AltDrive
Data de-duplication; block-level incremental; unlimited offering. Home (1–3 computers) or biz service (1–1000 computers). Client-side encryption, external USB drives, NAS support for Biz customers.
ASUS WebStorage
Auto-upload on designated folder, auto-backup capabilities, cross-platform file access of upload and sharing - iOS, Android, Windows Marketplace, OS X, Ubuntu, Linux, Windows Store (Windows 8) also any compatible browser. 5 GB of free data. Upload limit for each file of 500 MB on free account. Daily file sharing limit of 500 MB on free account. Free account will only allow one computer to be able to back up.
Backblaze
Data de-duplication; block-level incremental
Barracuda Backup Service
Data de-duplication; real-time hybrid on-site/off-site data back-up
BitCan
Fast & Reliable Cloud Backups. MySQL, MongoDB, Linux, Unix. <50 Second Setup. Best $ Value.
BullGuard Backup
5 PC/license, fast upload speeds, mobile access, encrypted transfer and storage, password-protected settings, free 24/7 support
Carbonite
Block-level incremental, Home or Pro editions. iPhone/ Blackberry/ Android App available to remotely access data from the online backup (For Pro: Users of the computer which are backed up, not available for the Administrator of the Pro). Can manually select files to upload that are larger than 4 GB.
Copy
Delta sync, clients for most systems available (including Linux), invitation system gives 5 extra GB each user.
Crashplan
Unlimited destinations. Data de-duplication; block-level incremental. Can run server-free, exchanging backup space with friends and family.
DataShell
Unlimited data backup and cloud storage, the first service offered for direct bitcoin and litecoin payment.
Datashield
High-level encryption, personalized encryption key, shared cloud drive, sync folder functionality
Dolly Drive
Cloud storage that is specifically designed for the Mac. Also allows users to store files exclusively in the cloud for seamless access on any computer or mobile device.
Diino
iPhone/Android app available.
Dropbox
Data de-duplication, delta sync, iPhone/Android/Blackberry app available.
Dropmysite
website backup, database backup, SFTP support, free up to 2 GB.
Druva inSync
Integrated Backup and File-sharing. HIPAA and ISAE3400 compliant
Egnyte
Delta sync, Google Docs sync, user and group management
ElephantDrive
Auto-transfer from defunct Xdrive.
FilesAnywhere
Mark Cuban acquired minority interest in 2006. Android, iOS, BlackBerry apps available. Dedicated server options available. CoolBackup software used for backup and sync.
F-Secure
[Steek acquired by F-Secure July 2009]
Humyo
Humyo was acquired by Trend Micro and will become part of Trend Micro SafeSync. Humyo no longer accepts new clients.
IASO Backup
Advanced[clarification needed] data reduction technology. Data de-duplication mechanism. High level[clarification needed] of scalability and cost effectiveness.
IDrive
Proprietary license download client. Automatic Selection. Continuous Data Protection. "Virtual drive" explorer.
Jungle Disk
Proprietary license download client sample code.
KeepVault
Real-time hybrid on-site and offsite data backup
Memopal
Cross-user de-duplication, delta sync
MiMedia
Initial seed via a MiMedia-owned external hard drive available (no extra cost, shipping included).
Mozy
Data de-duplication; block-level incremental. "Mozy Data Shuttle" physical seeding service available for extra fee.
Replicalia
Professional Backup for Professional Data
SpiderOak
Data de-duplication."Zero Knowledge" encryption.
StoreGrid Cloud
Byte-level incremental backup, local backup, Disk Image backup - BMR and physical seeding.
Syncplicity
Google Docs sync, Central Management with Business Console
TaniBackup (Cheap Backup)
Up to 10 TB per standard package. Extensible to over 300 TB per single account. Access via SMB/CIFS or SSH (including sftp, scp, rsync and so on). 100 GB for $2 per month.
Tarsnap
Client source available; data de-duplication; block-level incremental.
TeamDrive
Store encrypted data on any WebDAV server; supports working offline; files can be commented; built-in support for conflict resolution.
Tencent Cloud (English)
Tencent is offering users 10TB of free cloud storage. This puts the free space given by other English site to shame.[113]
Unitrends Vault2Cloud
Data de-duplication; hybrid on- and off-premise data backup; physical seeding
UpdateStar Online Backup
Data de-duplication; block-level incremental
Usenet backup
Is the method of storing backup data on the usenet.[114]
Windows Live Mesh
Replaces windows live sync and windows live folder
Wuala
Cross-user data de-duplication, Client-side encryption, Wuala does not have access to the data. Hybrid solution only works with LaCie NAS.
Zetta Enterprise-grade Online Backup
Supports Linux, Mac OS, and Windows, high speed WAN optimization, SAS 70 certified data centers
Zmanda Cloud Backup
Available in German and Japanese languages, supports MS SQL Server, MS Exchange, SharePoint, MySQL Database, System State, Oracle

Versioning

Any changes can be undone, and files can be undeleted.

Acronis
Supports detailed history of changes to files with browsing by date or version number.
AltDrive
Old versions of files are kept for 60 days. Biz customers choose their retention policy of 30 days to 7 years to forever.
Backblaze
Old versions of files are kept for 30 days.
Box
Versioning is included in paid subscription
Carbonite
Keeps old versions for up to three months. It keeps one version for each day of the past week, one version for each of the previous three weeks, and one version for each of the previous two months that the file has been backed up. Versioning available for PC computers only; not available for Mac.
Copy
Possibly, it is mentioned on their Google App, but not directly on their website [115]
Crashplan
Options: All, or staged (daily, then weekly, etc.).
Dolly Drive
Yes. Keeps unlimited versions of files.
Dropbox
By default, Dropbox saves a history of all deleted and earlier versions of files for 30 days for all Dropbox accounts.[116]
Dropmysite
Provides incremental backups with the ability to download every snapshot.
Druva inSync
Unlimited, Timeline based restores
ElephantDrive
Any number of versions can be kept for any amount of time.
Google Drive
Old versions of files are kept for 30 days or 100 revisions. Revisions can be set not to be automatically deleted.
IASO Backup
All versions of files can be kept for different periods of time, starting from 1 month to 1 year or more.
iDrive
Up to 30 old versions of files are kept forever (until explicitly removed).
Mozy
Old version of files are kept for 30 days. Pro 60 days, Enterprise 90 days.[117]
PowerFolder
Five versions are kept online. In the client it is configurable how many versions to store locally.
SOS Online Backup
All versions are kept. Only the largest counts towards the storage limit.
SpiderOak
All versions are kept. All files can be undeleted.
SugarSync
Five versions are kept. Only the most recent version of each of existing files as well as deleted files count towards the storage limit.
Syncplicity
Old versions of files, as well as deleted files, are kept for 30 days. Configurable for business or enterprise-class services.
TeamDrive
All previous versions are kept and can be restored.
Tresorit
Versioning is included in paid subscription
Wuala
Ten versions are kept. Only the most recent counts towards the storage limit.
Zetta Enterprise-grade Online Backup
All versions are kept. All files can be undeleted.

See also

Defunct services

Notes

References

  1. ^ "ADrive Features".
  2. ^ AltDrive Blog » A note on AltDrive Security…
  3. ^ a b Backblaze Blog » How to make strong encryption easy to use
  4. ^ "Barracuda Backup Service - Integrated Local and Offsite Backup". Barracudanetworks.com. 2009-02-09. Retrieved 2012-10-29.
  5. ^ a b c [1]
  6. ^ Bitcasa
  7. ^ Techcrunch interview with Bitcasa CEO
  8. ^ "Bitcasa CloudFS API".
  9. ^ Upgradable to 20 GB, with friend referral.
  10. ^ Is there a maximum file size for a single file allowed for being stored in the cloud? "Infinity :)"
  11. ^ http://feedback.bitcasa.com/forums/184524-bitcasa-feature-requests-suggestions/suggestions/3920475-mirroring-an-external-hard-drive- Bitcasa ext HDD support in development
  12. ^ "Bitcasa and Amazon keep redundant backups of all data".
  13. ^ a b c d e f g h "Clicking Clean: How Companies are Creating the Green Internet" (PDF). Greenpeace. Retrieved 2014-06-15.
  14. ^ a b "Box for Enterprise IT: Security Leadership in The Cloud". Box.com. Retrieved 2012-10-29.
  15. ^ "Box and WebDAV".
  16. ^ "Box feature comparison".
  17. ^ "Online Data Backup, Backup Software, Remote Backup – BullGuard". Bullguard.com. 2011-02-15. Retrieved 2012-10-29.
  18. ^ Managing Your Private Encryption Key
  19. ^ Bandwidth Allocation, retrieved 2012-01-25
  20. ^ HomePremier and Business plans only: http://www.carbonite.com/en/home/online-backup-pricing
  21. ^ HomePlus, HomePremier and Business plans only: http://www.carbonite.com/en/home/online-backup-pricing
  22. ^ "Network Drive (WebDAV)".
  23. ^ "Backup Software, Best Windows Backup Software Features - Comodo Backup". Backup.comodo.com. Retrieved 2012-10-29.
  24. ^ a b https://www.copy.com/price. Retrieved 2014-05-19. {{cite web}}: Missing or empty |title= (help)
  25. ^ "PRO FAQs". CrashPlan PRO. Codefortytwo Software. Retrieved 2014-05-02.
  26. ^ "Archive Encryption Key Security". CrashPlan. Codefortytwo Software. October 25, 2013. Retrieved 25 October 2013.
  27. ^ http://support.crashplan.com/doku.php/faq/mozy#are_crashplan_unlimited_plans_really_unlimited , throttled by setting by default http://support.crashplan.com/doku.php/reference_guide/settings#network
  28. ^ "reference:real_time_backups [CrashPlan Support Site]". Support.crashplan.com. Retrieved 2012-10-29.
  29. ^ About Us, Code 42 Software
  30. ^ as a local backup option : http://support.crashplan.com/doku.php/getting_started/attached_drive_shared_folder and to backup : http://support.crashplan.com/doku.php/faq/mozy#can_i_back_up_my_external_hard_drive_thumb_drive
  31. ^ "Cubby and WebDAV".
  32. ^ "DataShell Adds Mirrored Cloud Drive".
  33. ^ "F.A.Q. about Apple Time Machine in the cloud". Dolly Drive. Retrieved 2012-10-29.
  34. ^ full external and network-attached storage support
  35. ^ "What is Diino?". Diino. Retrieved 2012-10-29.
  36. ^ http://www.drivepop.com/unlimited-cloud-backup-plans/. {{cite web}}: Missing or empty |title= (help)
  37. ^ Dropbox Lied to Users About Data Security, Complaint to FTC Alleges | Threat Level | Wired.com
  38. ^ Encrypt Files On The Client-Side Before Uploading To Dropbox | DiggFreeware.com
  39. ^ a b c d e Druva Cloud Backup FAQ
  40. ^ a b Security & Privacy - Online Storage Protection and Secure File Sharing for Egnyte Cloud File Server
  41. ^ "Egnyte map drive".
  42. ^ Linux | ElephantDrive. Home.elephantdrive.com. Retrieved on 2013-08-10.
  43. ^ Download Android App | ElephantDrive. Home.elephantdrive.com (2011-12-09). Retrieved on 2013-08-10.
  44. ^ What is a Personal Key in the encryption settings? : Knowledge Base and Support Center
  45. ^ "ElephantDrive: How do I set up my Trunk (mapped) drive?".
  46. ^ Everywhere folder : Help Desk. Support.elephantdrive.com (2012-07-05). Retrieved on 2013-08-10.
  47. ^ Tutorials. Vault.elephantdrive.com. Retrieved on 2013-08-10.
  48. ^ "Where is my ElephantDrive data physically stored?". 2009-09-04. Retrieved 2014-06-15.
  49. ^ "Security : Support Center". Support.filesanywhere.com. 2011-05-20. Retrieved 2012-10-29.
  50. ^ Privacy Policy : Support Center
  51. ^ "FilesAnywhere WebDAV Drive Mapping".
  52. ^ a b F-Secure Online Backup FAQ
  53. ^ Google Drive Is Coming to Linux
  54. ^ Google Docs, Sheets, and Slides size limits "Files that you upload but don’t convert to a Google Docs, Sheets, or Slides format can be up to 1TB each."
  55. ^ Google Green - Renewable energy
  56. ^ http://www.handybackup.net/online-backup.shtml
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  65. ^ "Livedrive WebDAV access".
  66. ^ Security – Memopal
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  69. ^ a b Mozy Help : Understanding MozyHome Encryption
  70. ^ "Limit on file size? - Mozy Community". Community.mozy.com. Retrieved 2012-10-29.
  71. ^ Storage Made Easy supports OneDrive
  72. ^ Microsoft SkyDrive for Android app is now available
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  78. ^ Data and File Security - Secure Online Backup – SugarSync
  79. ^ SugarSync password recovery
  80. ^ What is max file size for upload? "There is no maximum file size limit for adding the file through the SugarSync Manager application. However, there is a 100MB limit for files being uploaded through the SugarSync website."
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  85. ^ "Tarsnap service is provided using infrastructure from Amazon Web Services".
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  91. ^ UpdateStar - Simplify your software life
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  93. ^ Server Edition
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  119. ^ "Norton Zone End of Life FAQ".
  120. ^ "Dell™ DataSafe Online service will be shut down on June 11, 2015".
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