Anyone using HashBackup?

[fta]

Code:

dedup-mem 1GB

That's pretty small. Are you only backing up a small number of files?

 

[Robert Trevellyan]

Here's an extract from last night's log:

Code:

Dedup enabled, 91% of current, 7% of max
<snip>
Time: 90.7s, 1m 30s
CPU:  86.6s, 1m 26s, 95%
Wait: 92.2s, 1m 32s
Mem:  374 MB
Checked: 1647531 paths, 549199536625 bytes, 549 GB
Saved: 682 paths, 414003587 bytes, 414 MB
Excluded: 6
Sparse: 524288, 524 KB
Dupbytes: 399461920, 399 MB, 96%
Compression: 98%, 75.0:1
Efficiency: 4.49 MB reduced/cpusec
Space: 5.5 MB, 438 GB total

This says HashBackup used 374MB of RAM to incrementally backup 1.6 million files that occupy 549GB. It found 682 changes consuming 414MB, of which 399MB were duplicates of previously backed up blocks. After compression, it only had to upload 5.5MB. The entire backup, including all previous versions, occupies 438GB of storage. On B2 this costs just over $2 per month.

As a general guideline, HashBackup can dedup 8 million blocks of backup data with 100MB of memory.

See http://www.hashbackup.com/technical/dedup-info

 

[Dice]

Coming around, a year later, any follow up on using hb?
With b2?
What's the ...ehrm.. review to date?

 

[Robert Trevellyan]

Some changes in my setup have resulted in a smaller backup set, but I'm still using HashBackup with b2. I have restored successfully a few times. When I have questions the author is very responsive. Two thumbs up.

 

[Dice]

Some changes in my setup have resulted in a smaller backup set, but I'm still using HashBackup with b2. I have restored successfully a few times. When I have questions the author is very responsive. Two thumbs up.

Whats the likelihood a novice user can set it up running on FreeNAS? That is, what's the difficulty level?

 

[Robert Trevellyan]

I expect you'll be fine if the following are true:

1. You're willing and able to study the written documentation before you dive in. I may be an extreme case of this, but regardless, it's a command-line utility so the documentation must be read and understood.
2. You're willing to start with a small test setup that you will throw away after you've played with it. In my case, I tested it by backing up the user folder on my Mac to an external drive.

 

[Dice]

The answer I should've anticipated, yet feared facing.
I'll be pushing this project into the future, once again. At some point I might muster up the required energy to fill in all the gaps in the context of setting this up under FreeNAS.

I'll be back with questions once I start taking a stab at it...