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First Look: Twin 1.0 for Mac OS X

Time Machine made it easy for Leopard owners to back up their Macs on local external hard drives, and lately we've seen a number of online backup services such as Carbonite, BackBlaze, and MozyPro debut for the Mac platform. These online services are great (I personally use BackBlaze), but there's a monthly cost associated with them. What if you already have access to a large volume of server space?

App4Mac has just announced Twin 1.0 for Mac OS X (US$39.67, €29.00), an online backup solution that works with all sorts of servers: FTP (all varieties), WebDAV, Amazon S3, and even MobileMe. Unlike many of the other online solutions, Twin claims that it retains all the Mac OS X file metadata, ACLs, and privileges, and your data is kept safe with AES-256 "Jack Bauer quality" encryption. In addition to the online backups, you can use Twin for backing up your files to local drives and have the backups begin when the external drive it plugged in.

I'm impressed with the powerful scheduling capabilities of Twin, which include a way to use logical operators to determine exactly when backups should proceed or not. Having an offsite backup is that extra bit of security that every Mac user should have. Check out the gallery below for some screenshots of the app in action. You can also download a free, limited-capability trial of Twin if you're interested in kicking the tires.



Time Machine made it easy for Leopard owners to back up their Macs on local external hard drives, and lately we've seen a number of online...
 

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jasonology

Anyone else tried iDrive or Syncplicity?

July 09 2009 at 12:40 PM Report abuse rate up rate down Reply
Matthew Dornquast

re>FTP, et. all.

There is a reason CrashPlan doesn't support these lower intelligence transports and targets. When we designed CrashPlan we decided to not trust the hardware or storage at a backup destination. Each destination automatically verifies your backups autonomously and heals around any errors detected. If you used FTP, you would have to read in all the data over the net to verify it. The larger the data backed up, the more impossible this becomes.

Of course, we could turn off this verification and use a target like FTP, but is it worth it? More bandwidth used, less data security .. seems like an awful lot to sacrifice.

May 17 2009 at 11:42 PM Report abuse rate up rate down Reply
1 reply to Matthew Dornquast's comment
CaptSaltyJack

Are you saying that because CrashPlan communicates with other CrashPlan servers, you can do effective data verification on the server side and fetch that result back to the client?

There are other ways to verify data, e.g. you could run your checksum and store the results in a file, which is FTP'd up to the server. So that way, CrashPlan could just pull that file down and compare the checksums.

As far as storage security, that's easy: just add support for SFTP and FTP over SSL.

May 21 2009 at 10:14 PM Report abuse rate up rate down Reply
entica

Anyone know if when backing up via FTP it only sends the delta of a changed file rather than having to re-upload the entire file? I have some crazy large files I modify regularly and it would suck if it had to re-upload the entire files every time.

Guess I could try the demo out and figure it out for myself :P

May 17 2009 at 10:40 AM Report abuse rate up rate down Reply
lazyj

Very nice app! I was using SmartBackup, but this beats the pants off of it! And the scheduling, bandwidth capping and compression is good!!!! Finally, I can dump all the other backup apps I've tried to send data to my webserver.

May 17 2009 at 6:24 AM Report abuse rate up rate down Reply
Kurt

Nobody's mentioned JungleDisk yet? Been using for 18 months now and it works like a champ.

May 16 2009 at 11:57 AM Report abuse rate up rate down Reply
1 reply to Kurt's comment
Alva Elver

I switched from JD to Crashplan because it worked out cheaper (~100GB of data). Still have a JD account which I use for little stuff though. JD is very good, just $$$.

May 16 2009 at 5:41 PM Report abuse rate up rate down Reply
Luigi193

If our files will have Jack Bauer Quality, won't they get infected by a biological weapon???

May 16 2009 at 11:17 AM Report abuse rate up rate down Reply
patrice Calligaris

about pixelmator comment : the free tutorial to make this kind of bubbles is available on hundred of websites ;-)

May 16 2009 at 8:10 AM Report abuse rate up rate down Reply
patrice Calligaris

With the trial version, you will be limited to a single backup of 250 Mb maximum over 15 days, as well as restoring only one file at a time. About the price, you forgot that all updates are free for your full life, so in fact, it's very cheap with free technical suppport.

May 16 2009 at 8:04 AM Report abuse rate up rate down Reply
Jash Sayani

I have been waiting for this app from weeks !! From the Beta period itself.... I am really looking forward to getting this app, however, the price tag is very steep !!

Can anyone give me info on the Trial version ? Is it a Limited-time trial (15-day or 30-day) OR a limited function trial with no Time limit ??

Thanks.

May 16 2009 at 7:59 AM Report abuse rate up rate down Reply
CaptSaltyJack

Not that impressed. It does incremental backups fine, but when I go to restore an individual file, I can't pick a certain date/revision of that file. And in fact, when I click "Restore...", my Mac just beeps at me. What the heck?

May 16 2009 at 12:14 AM Report abuse rate up rate down Reply
2 replies to CaptSaltyJack's comment
Matthew Dornquast

CrashPlan does this - it also data de-duplicates saving bandwidth and disk storage.

May 18 2009 at 10:33 AM Report abuse rate up rate down Reply
CaptSaltyJack

Yeah, CrashPlan rocks, I use it. The only feature it's missing (but coming soon) is the ability to define multiple backup sets (backing up different files to different locations).

May 18 2009 at 11:43 AM Report abuse rate up rate down Reply
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