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spw
2004-12-09, 10:44
I don't think people have read my posting - a RAID solution won't help when your computer is stolen or you suffer a fire or even a lightning strike.
DON'T WASTE YOUR MONEY ON A RAID SOLUTION.
Spend the money on two external firewire (400Mb/s or 800Mb/s) drives
Use one at a time for a week backing p nightly, then swap with the other and put it in the shed, take it to work or give it to a friend.
SPW

Robin Bowes
2004-12-09, 10:57
spw wrote:
> I don't think people have read my posting - a RAID solution won't help
> when your computer is stolen or you suffer a fire or even a lightning
> strike.

True. But nobody's saying that it will. It also won't help if clumsy
fingers type "rm -rf" or "del 8.*" in the wrong place.

> DON'T WASTE YOUR MONEY ON A RAID SOLUTION.

RAID is not a backup solution; it increases availability. It ensures
your PC/server remains operational in the all-too-likely event of disk
failure.

> Spend the money on two external firewire (400Mb/s or 800Mb/s) drives
> Use one at a time for a week backing p nightly, then swap with the other
> and put it in the shed, take it to work or give it to a friend.

That is one possible backup solution.

However, in your scenario, what do you do when your PC/server is out of
action because a disk has failed? Sure, you've got the data backed up,
but, until you buy and install a new drive and then re-build the
machine, you're out of action.

Backup and availability need to be considered and addressed separately.

There is a need and a place for both.

R.
--
http://robinbowes.com

stephen van vuuren
2004-12-09, 13:43
I use RAID, external drives for in-house backup and tape & DVD for
off-site backup. You need both for full protection.

On Thu, 9 Dec 2004 18:22:48 -0000, Kevin Walsh <kevin (AT) cursor (DOT) biz> wrote:
> spw [slim (AT) clock-tower (DOT) com] wrote:
>
>
> > I don't think people have read my posting - a RAID solution won't help
> > when your computer is stolen or you suffer a fire or even a lightning
> > strike. DON'T WASTE YOUR MONEY ON A RAID SOLUTION.
> > Spend the money on two external firewire (400Mb/s or 800Mb/s) drives
> > Use one at a time for a week backing p nightly, then swap with the other
> > and put it in the shed, take it to work or give it to a friend. SPW
> >
> While I agree that a RAID system won't save you from fire, flood,
> famine, plague of locusts etc., it can be used as a backup solution.
> Well, it can in theory.
>
> Simply configure a hot-swap hardware RAID mirror and bring all drives
> up to date. When you need to make a backup, simply remove one of the
> mirrored drives and replace it with a blank. The blank will be
> automatically filled with a fresh copy and the drive you removed
> can be stored as a backup - offsite if you prefer.
>
> That's the theory, anyway. I don't know what you'd do when you want
> to restore the backup, but I imagine that it'd be as simple as inserting
> the backup drive into the array, along with a blank. You'd want to
> test and document the backup and restore process before relying on it.
>
> Messing with RAID disks (or external disks, for that matter) seems
> far too manual for my liking. Automation is the key, I think.
>
> RAID arrays have their use. For instance, they are good for recovering
> from a simple disk failure; You just replace the disk and don't have
> to worry about restoring backups etc.
>
> --
> _/ _/ _/_/_/_/ _/ _/ _/_/_/ _/ _/
> _/_/_/ _/_/ _/ _/ _/ _/_/ _/ K e v i n W a l s h
> _/ _/ _/ _/ _/ _/ _/ _/_/ kevin (AT) cursor (DOT) biz
> _/ _/ _/_/_/_/ _/ _/_/_/ _/ _/
>
>
>
>

Daryle A. Tilroe
2004-12-09, 16:32
spw wrote:

> I don't think people have read my posting - a RAID solution won't help
> when your computer is stolen or you suffer a fire or even a lightning
> strike.
> DON'T WASTE YOUR MONEY ON A RAID SOLUTION.

All of those scenarios are a lot less likely than a simple
HDD failure. Of course RAID is not a panacea but to keep things
seamlessly up for the most likely failure it is great. I use
RAID *AND* backups for my critical data. As for wasting money;
well a few hundred bucks is not a lot to mirror your HDD.

--
Daryle A. Tilroe

John L Fjellstad
2004-12-09, 18:59
On Thu, Dec 09, 2004 at 04:28:53PM -0800, John M. wrote:

> What if a virus or malware sneaks by your defenses and corrupts your system?
> Or a system upgrade causes corruption? Won't a mirror drive simply mirror
> that state?
>
> With two external backup drives, one next to the computer and one offsite or
> in a fireproof safe, where you control the backups via a scheduler or do
> them manually, you are protected from this.

What if a virus or malware sneaks by your defenses and corrupts your
system? Or a system upgrade causes a corruption? Won't a backup simply
copy that state?

--
John L. Fjellstad
web: http://www.fjellstad.org/ Quis custodiet ipsos custodes

Jonathan Miller
2004-12-09, 21:53
I prefer grapefruit to pears. And, why does the state of Washington
have such a big apple industry? What's Microsoft going to do about
that?


On Thu, 9 Dec 2004 17:59:43 -0800, John L Fjellstad
<john-slimlist (AT) fjellstad (DOT) org> wrote:
> On Thu, Dec 09, 2004 at 04:28:53PM -0800, John M. wrote:
>
> > What if a virus or malware sneaks by your defenses and corrupts your system?
> > Or a system upgrade causes corruption? Won't a mirror drive simply mirror
> > that state?
> >
> > With two external backup drives, one next to the computer and one offsite or
> > in a fireproof safe, where you control the backups via a scheduler or do
> > them manually, you are protected from this.
>
> What if a virus or malware sneaks by your defenses and corrupts your
> system? Or a system upgrade causes a corruption? Won't a backup simply
> copy that state?
>
> --
> John L. Fjellstad
> web: http://www.fjellstad.org/ Quis custodiet ipsos custodes
>
>
>