Arch Linux

lilsirecho

Veteran

Registered: 2003-10-24

Posts: 5,000

Raid application question

Booted system in raid0.

Can generate a second raid0 within the arch system as booted.

What speed will result when using the second raid0 ,,,will it utilize the first raid0 speed plus the second raid speed while in use?

Are there any advantages to the procedure?

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fukawi2

Ex-Administratorino

From: .vic.au

Registered: 2007-09-28

Posts: 6,222

Website

Re: Raid application question

Can generate a second raid0 within the arch system as booted.

Do you mean a second, separate RAID0 array (eg, md1), or expanding the existing RAID0? With separate drives? Or the drives already being used in the existing RAID0?

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lilsirecho

Veteran

Registered: 2003-10-24

Posts: 5,000

Re: Raid application question

I expect to try new drives within the existing OS.  The purpose is unknown, just because its there I guess.  Thus it would be /dev/md1 but non-booting.

Perhaps a wild idea?  Not useful?

Hopefully it would run without rebooting.

Like to find out what can or cannot be done.

Present boot is in raid0 linux3.0.

Googling remarks that many,many raid arrangements exist and this isn't included directly in any I have googled.  Some comments indicate "nested" raid arrays without much palavering.

Maybe a dead end?

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Prediction...This year will be a very odd year!
Hard work does not kill people but why risk it: Charlie Mccarthy
A man is not complete until he is married..then..he is finished.
When ALL is lost, what can be found? Even bytes get lonely for a little bit!     X-ray confirms Iam spineless!

fukawi2

Ex-Administratorino

From: .vic.au

Registered: 2007-09-28

Posts: 6,222

Website

Re: Raid application question

I don't understand what you want to do exactly...

You can create additional arrays (eg /dev/md1) with extra drives then mount them and use them "just like any other block device".

You can expand the existing array (eg, add a third drive) to make a larger array.

Migrating to a nested array depends on exactly what you want to migrate to (eg, RAID 10, RAID 01, RAID50 etc), what drives you have available and if you're willing to loose data (due to having to reinitialize the existing array/drives)

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