Re: What are the benefits of using dynamic disks over basic?

Ian Roberts <sorry@xxxxxxxxxx> wrote
> Rod Speed <rod_speed@xxxxxxxxx> wrote
>> Ian Roberts <sorry@xxxxxxxxxx> wrote

>>> Ive been reading a little about how to create Dynamic Discs but I havent
>>> come across anything to explain why I would want to use it over Basic disks.

>> They basically give you more capability, like being able to
>> span more than one physical drive into a combined logical drive.

>> There are however some downsides too, like if one physical
>> drive dies, all the data in the spanned volume is at risk, not
>> just the data on the single drive that has died. Obviously thats
>> just a nuisance if you are fully backed up etc.

>> Support for dynamic disks is worse with imaging software etc too.

> Thanks for replying Rod

> So it sounds similar to RAID to me.

Similar to RAID0, anyway. Not quite as bad tho because individual
files arent always split between the physical drives, so with no
backups and a single physical drive failure, you're more likely to
be able to recover at least some of the files with dynamic disks.

> I wonder... does it allow drives of different sizes to be combined and utilise
> all the space?

Yes. And different drive performance is completely irrelevant too.

> Would be great if thats possible. This would allow me to make use of some old
> small drives I have lying around ie 4-9Gb each.

Yeah, its most useful for that sort of thing.

> If I put them in an external enclosure (connected via firewire or USB) would a
> dynamic setup be allowed or is that arrangement considered "removable" and
> therefore not poss?

Correct, it wont do that with those, essentially because
its much too easy to have one of them offline.

You could however put the drives in a seperate server and
have whatever you like connecting that to the main system.
Lan would normally be better than USB or firewire tho.


.

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