Anyone explain the difference between incremental and mirror backups?

thanks

robber, mirror means that you make an exact copy of what you're trying to back up. Incremental means that you only back up the files that have changed since the last backup. Incremental backups are obviously much smaller and quicker since they don't back everything up. If you were using incremental backups you might therefore take a mirror (or full) backup every week and an incremental backup on all the other days. To restore you would need to load the mirror backup followed by every incremental backup taken after that.

seymour: thanks for responding. I can see the disc and double clicking on that does bring up a list of files which shows exactly what I wanted, but opening one of the documents doesn't happen. Is it possible that somehow it's only transferred a table of contents and not each document as well. If so, how do I rectify that, please.

I use Adaptec Easy CD Creator v3.5c and V is the drive I read CD's on. W seems to be the Rewriter thingy! Apart from those two, just the normal C and A, I think!

Easy?? They're kidding.

Fabulous news about PDX - can't believe I missed it!

I've been trying to get some more info from the pursuit guys this morning.

So - here's the SP:-

Edmonton is Ontario's main heavy industrial area, about an hour's drive from Toronto. The deal thats been done is for Sonico to buy a small number of units from PDX for testing purposes. PDX engineers will support the deployment and test process, and will bill sonico for time and expenses.

The PDX-3 will be tested in some new 'standing tanks'. The theory is that a single solid state PDX3 unit will replace four traditional components: the pump, the macerator, the agitator and the oxygenator. Each of these traditional components costs more than a single PDX3. Each of these components has a shorter servicing interval than the PDX3. Servicing any of these components requires the standing tank to be shut down.

Should the tests prove succesful, the expectation is that all new water processing plant worldwide will be built with PDX3 technology, and a retrofit program will begin worldwide to replace all existing tanks with the PDX3 version. The cost of retrofitting a PDX3 pump and servicing it for 3 years is expected to be less than the cost of servicing existing technologies for two years.

If these tests prove succesful, in four month's time Pursuit could well be forecasting an initial annual royalty in the region of 25m and growing over 5 years to more than $500m.

The shares currently trade under 40p. Numis have a target of 1.50. Looks like they may have to revise that upwards pretty soon.

Gausie (Under the masterful tutelage of Martini)

Mr Euro,

Why not email Zonelabs support, if it is an AOL problem then they've almost certainly alread come across it?

Cheers

thanks Kayak, so if a file has been deleted since the last Incremental backup would it then be deleted from the backup set on the next run?

Robber

No.

Also bear in mind that if any of your previous backups (since and including your last full backup) become corrupted then your chances of doing a full restore to a new hard drive are nil. You multiply the chances of failure by an horrendous amount.

Gausie

Robber, for the reasons that Gausie has dynamically pursued and outlined I prefer to do "differential" backups, which are the third option, if your backup program allows them. These back up everything changed from the last full backup, not the last incremental backup. That means that on a restore you only ever have two tapes to load, and that the deleted files issue only applies to files deleted from the original backup rather than the intermediate ones.

thanks both, youve been a great help.

Neil

Kayak - was too subtle for me - Missed it on the first reading :o)

Kayak, :-)

Slightly off topic but...

Anyone used a web design and hosting service they would recommend?

Thanks.

jojo,

Xcalibre are very good...

J.

Biffer thanks will do.

I have a problem with WIN XP Professional .Ive been trying to download the service pack from the windows update site.Im keep getting an error message saying the product key is not valid.Ive downloaded updates previously without any problems. I disabled my antivirus software during the download as recommended.
Is there a site I can download updates without a product key(Naughty I know ;-) How do I check the product key on my machine and possibly change it if poss?
Hope someone can help.
Iain

My PC not recognizing my dvd and cd-rw ever since I upgraded to windowsXP from 98, I know my old softwares seems not tobe compatible with XP only I dont know what excatly needs upgrading to make XP recognized the drivers, any suggestions appreciated

Iain, sounds like bad news to me. The latestXP service pack blocks updates for any copies of win XP which have used the 'unconventional' means to obtain a product key, for example to corporate keys which leaked out onto the internet. I think your only solution is to not do the download or to go and buy a legit copy.

Rizz, try the manufacturers web site for XP drivers (or a google search might find it)

Neil

vasey

It is possible that you have simply transferred a link. Did you use direct cd and drag and drop the files, as I've had that problem myself? If so the technique is to go into Easy CD creator and drag and drop the files that way, or, using Direct CD, having formatted your CD for direct CD, go into windows explorer, highlight all the files or directories you want to copy on the C drive,then click on copy. Then click on the drive you write to (W)to highlight it and then click paste. That usually works. If you already do this and I'm assuming you know less than you already do then I apologise! Let me know how you get on.

Seymour: thank you. I must admit, at this point, I'm too exhausted to try again tonight, and, as the purpose is to back up files so I can upgrade to XP, that is sounding a bit more complex than I realised, reading the posts immediately above this one! Clearly there are indeed problems on upgrades from W98 to XP. Not even so great with a clean installation if it won't recognize Adaptec.

Rizz:
Many thanks for the E-Mail.

Cheers.Iain

Robber:Ill let you know if i can "Crack" the problem. :-)