cloning or/and staging?

[Robert800]

Iam setting up my policies for staging and cloning data to tape.

But my question is do i need both? I know that cloning is coping from one media to another and staging moving data from one media to another.

Now iam cloning data to tape and staging it (with water mark 98%-65%) to tape.

We have an policy of keeping data on disk 8 days, full month clone to tape each month, keeping data on tape for 1 year then recycle.

What is the recommended way to do this automaticly?

Thanks

 

[Robert800]

To continue with that discussion i do like this today:
1. First we backup to disc.
2. We clone data to tape (Full Clone) after disc backup.
3. Have setup a seperated retention policy for frc and frc02 in period of 8 days. For Full Clone tape we have 1 month retention policy and for defaul clone tapes we have 1 year.

The problem is the retention time, i dont see it recycle disc space after 8 days so i have to manually do a stage jobb to free up some space on disc othervise it gets full. This is not good as it gets to many copies on the full clone tapes.

So shouldn't retention policy free up some data?

And is staging a better way to do this? I mean if i only stage old data and dont do a full clone then old data is put on the tape?

 

[605]

The staging policy does not have anything to do with the retention policy at all. NW will delete backups automatically only
- on a File Type Device
If nsrim runs (normally just once a day)
- on an Advanced FTD
Right away, i.e. if a save set has been aborted.
However, usually, the checks are run at the end of an automatic backup ;-)

On tapes, NW will just mark the save sets recyclable. However, it can not free space at all here except if it relabels/recycles them. And NW will only do this
- if all save sets have expired AND
- if it needs a new tape.

 

[Robert800]

Thanks,
So i normally should use only cloning and a retention policy? that will work?

But it seems that the retention policy dont work becouse i have to set tapes recycle every time and i have configured on media pools the retention policy. Same on the frc file systems.

Mayby i missunderstand you...

 

[605]

Each backup and consequently each media will follow a retention policy - except if you set it to "Manual recycle" when you label it. It does not matter whether this is a backup or a clone media.

Just by your info so far i do not know why your retention policy will not work. However, i might imagine that there are dependencies among the save sets. Of course it makes sense to keep a whole backup cycle (full to full).

To check this, i makes sense to find out which save sets on the volume are are not recyclable and therefore blocking the media. Maybe that the save set are going to the wrong pool.

Once again - even if the media has become recyclable - NW will not recycle it right away. This is obvious as it does not know a scratch pool. It will only do it to the same or another pool, if it needs it.

 

[Robert800]

Sorry for open an old tread but after some months with only staging this is little bit unreliable becouse it doesnt seems to go automaticlly all the time which means the disk is getting full.

On our other backup system (7.2.1) were we havent update yet we do only cloning to tape (full clone) and a script that free's up some disc space that works fine.

But have anyone any script example or anything else smart that works fine?

We have version 7.3.3.

 

[a060463xyz]

There are a few bugs with cloning and staging in NW 7.3.x, fixed with a postfix in 7.3.1 but occured again in 7.3.2

So upgrade your system to 7.4.2.

If your problem persists do the following :

Open a call with EMC
Give us (and them) more informations about yor scripts an configs.