micromanual for nsradmin

Join hundreds of others and download the NetWorker Power User's micromanual for nsradmin. Check this blog article for details.

Enterprise Systems Backup and Recovery

If you have an interest in, or work in data protection/backup and recovery environments, you should check out my book, Enterprise Systems Backup and Recovery: A Corporate Insurance Policy. Designed for system administrators and managers alike, it focuses on features, policies, procedures and the human element to ensuring that your company has a suitable and working backup system.

 

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Archives

How important is it to clone?

This isn’t a topic that’s restricted just to NetWorker. It really does apply to any backup product that you’re using, regardless of the terminology involved. (E.g., for NetBackup, we’re talking duplication).

When talking to a broad audience I don’t like to make broad generalisations, but in the case of cloning, I will, and it’s this:

If your [...]

Basics – Listing files in a backup

A fairly common question I get asked is “How can I find out what files were backed up?”

This is actually fairly easy, particularly if you’re prepared to use the command line. You need to run two commands – mminfo, and nsrinfo.

The command mminfo accesses the NetWorker media database, and is used to pull out details [...]

Using probe based backups in NetWorker

Probe based backups were introduced in NetWorker 7.5, though you might think they had already existed in there, given the limited coverage they’ve been given thus far. Most announcements relating to NetWorker 7.5 have touted the virtualisation improvements, IPv6 support, etc.

Like so many things related to backup, some of the most useful things are the [...]

NetWorker 7.5 and Mac OS X

Released in December 2008, NetWorker 7.5 represents an incremental increase in NetWorker functionality mainly aimed at the following three things:

Virtualisation support – better VCBs, better awareness of virtual infrastructure, visualisation of virtual infrastructure, etc.;
Better integration with third party authority systems – e.g., LDAP, etc.;
Support for IPv6.

It’s the support for IPv6 that poses a particular challenge for Mac [...]

NetWorker and the Y2038 Problem

Having spent what seemed like much of 1999 coordinating the system administration efforts of a major Y2K project for an engineering company, I have fundamental problems with the plethora of journalists that claimed the overall limited number of Y2K issues experienced meant it was never a problem and was thus a waste of money. (I [...]

Learning NetWorker

NetWorker (indeed, any complex piece of software) is like a jigsaw puzzle. In order to use it properly, you have to learn how to put those pieces of the jigsaw puzzle together. Having just run another NetWorker training course, here’s some tips if you’re new to NetWorker:

Have handy access to documentation about the command line [...]

Instantiating savesets

Following a recent discussion I’ve been having on the NetWorker Mailing List, I thought I should put a few details down about clone IDs.

If you don’t clone your backups (and if you don’t: why not?), you may not have really encountered clone IDs very much. They’re the shadowy twin of the saveset ID, and serve [...]

How old is your media?

There are several components to determining media ‘age’. These are:

Usage count – the more times a tape is used, the more wear that tape experiences.
Operating and storage environment – temperature and humidity play an important role.
Elapsed time from manufacture date.

Keeping track of operating/storage temperature and humidity is a physical process requiring specific procedures and rules – e.g., [...]