Re: [Bacula-users] Long-term off-site storage with Bacula

2012-03-19 Thread Josh Fisher
On 3/18/2012 2:35 PM, Justin Finkelstein wrote:
 Hi all

 I've a backup scenario I'm wanting to implement with bacula, but need 
 some advice about whether this is a correct, stable approach.

 The scenario is this: our office want an off-site backup, preferably 
 using bacula as we're used to it. Due to the slow nature of our 
 office's ADSL link, we want to do this:

 1. We set up a box with a RAID5 array to store backed-up data
 2. Do one full backup of all of our data (about 1TB) before taking 
 the machine off-site
 3. Do monthly full backups of the data, with daily differential 
 backups (rather than incremental) to make restoration reasonably quick 
 (daily backups amount to ~50MB max)

 Having talked to someone on the #bacula IRC channel, they've suggested 
 we start with a Base backup type, so my strategy would be this:

 1. Create a Base backup with the machine on-site
 2. Configure monthly Full backups based on the base, to run off-site
 3. Configure daily differentials as per normal
 4. Set up bacula-fd to encrypt all data submitted as per 
 instructions online
 5. Set up SSH tunnels into the office to run bacula over

 Does this sound reasonably sensible?

Consider using virtual full backups instead of normal full backups. 
Virtual full jobs take the previous base+full+diff+incremental jobs and 
merge them into a single full job. A virtual full requires no 
interaction at all with the client, so is a good match for backup over a 
slow link. You might also consider using daily incremental backups, 
rather than daily differential backups, since that would also cut down 
on FD to SD transfers.



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Re: [Bacula-users] Long-term off-site storage with Bacula

2012-03-19 Thread Justin Finkelstein
That's the approach I was considering; with the scenario you've
outlined, you mention both diff and incremental jobs.

Would this mean 1 Base + Monthly Full + Weekly Diff + Daily Incremental?

Thanks!

On Mon, 2012-03-19 at 10:19 -0400, Josh Fisher wrote:

 
 Consider using virtual full backups instead of normal full backups. 
 Virtual full jobs take the previous base+full+diff+incremental jobs and 
 merge them into a single full job. A virtual full requires no 
 interaction at all with the client, so is a good match for backup over a 
 slow link. You might also consider using daily incremental backups, 
 rather than daily differential backups, since that would also cut down 
 on FD to SD transfers.
 
  Hi all
 
  I've a backup scenario I'm wanting to implement with bacula, but need 
  some advice about whether this is a correct, stable approach.
 
  The scenario is this: our office want an off-site backup, preferably 
  using bacula as we're used to it. Due to the slow nature of our 
  office's ADSL link, we want to do this:
 
  1. We set up a box with a RAID5 array to store backed-up data
  2. Do one full backup of all of our data (about 1TB) before taking 
  the machine off-site
  3. Do monthly full backups of the data, with daily differential 
  backups (rather than incremental) to make restoration reasonably quick 
  (daily backups amount to ~50MB max)
 
  Having talked to someone on the #bacula IRC channel, they've suggested 
  we start with a Base backup type, so my strategy would be this:
 
  1. Create a Base backup with the machine on-site
  2. Configure monthly Full backups based on the base, to run off-site
  3. Configure daily differentials as per normal
  4. Set up bacula-fd to encrypt all data submitted as per 
  instructions online
  5. Set up SSH tunnels into the office to run bacula over
 
  Does this sound reasonably sensible?


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Re: [Bacula-users] Long-term off-site storage with Bacula

2012-03-19 Thread Josh Fisher

On 3/19/2012 10:29 AM, Justin Finkelstein wrote:
 That's the approach I was considering; with the scenario you've 
 outlined, you mention both diff and incremental jobs.

 Would this mean 1 Base + Monthly Full + Weekly Diff + Daily Incremental?

Yes, because a Diff job backs up all file changes since the last 
successful Full. An incremental backs up only the changes since the last 
successful job of any level. A daily Incremental will backup only the 
changes for one day. A daily Diff will backup one day of changes on the 
first day, 2 days of changes on the second day, ... , 30 days of changes 
on the 30th day. So daily Diff will result in much more data being 
transmitted than will daily Incremental backups.

So when backing up over a slow link, 1 Base + Monthly Virtual Full + 
Weekly Diff + Daily Incremental will be less taxing on the slow link 
than 1 Base + Monthly Full + Daily Diff.


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[Bacula-users] Long-term off-site storage with Bacula

2012-03-18 Thread Justin Finkelstein
Hi all

I've a backup scenario I'm wanting to implement with bacula, but need
some advice about whether this is a correct, stable approach.

The scenario is this: our office want an off-site backup, preferably
using bacula as we're used to it. Due to the slow nature of our office's
ADSL link, we want to do this:

1. We set up a box with a RAID5 array to store backed-up data
2. Do one full backup of all of our data (about 1TB) before taking
the machine off-site
3. Do monthly full backups of the data, with daily differential
backups (rather than incremental) to make restoration reasonably quick
(daily backups amount to ~50MB max)

Having talked to someone on the #bacula IRC channel, they've suggested
we start with a Base backup type, so my strategy would be this:

1. Create a Base backup with the machine on-site
2. Configure monthly Full backups based on the base, to run off-site
3. Configure daily differentials as per normal
4. Set up bacula-fd to encrypt all data submitted as per
instructions online
5. Set up SSH tunnels into the office to run bacula over

Does this sound reasonably sensible?

Thanks,

Justin 

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