Re: Software based SATA RAID-5 expandable arrays?

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My 750w PSU is going into my dream machine (Overclocked core2duo extreme with 1066mhz memory, lots of optical drives, water cooling, Radion 1900xtx, aka high power application).  The 550 Ultra is coming out of that machine and going into the NAS.  Its not the perfect solution, for I would prefer a high efficiency PSU for the NAS, but it is the inexpensive solution.  

These details are why I tried to be clear and include as much info as possible.  My NAS may grow to 20 or more drives, thus making me feel nice and warm with a higher powered PSU.  The Higher spec PSU, may also save me from a possible PSU failure due to a fan failure (which is the number one cause of PSU failure).


----- Original Message ----

From: Dexter Filmore <Dexter.Filmore@xxxxxx>

To: David Greaves <david@xxxxxxxxxxxx>

Cc: greenjelly <big_green_jelly_Bean@xxxxxxxxx>; linux-raid@xxxxxxxxxxxxxxx

Sent: Tuesday, June 19, 2007 4:14:09 AM

Subject: Re: Software based SATA RAID-5 expandable arrays?



On Tuesday 19 June 2007 10:35:47 David Greaves wrote:

> Dexter Filmore wrote:

> > Why dontcha just cut all the "look how big my ePenis is" chatter and tell

> > us what you wanna do?

> > Nobody gives a rat if your ultra1337 sound cards needs a 10 megawatt

> > power supply.

>

> Chill Dexter.

>

>

> How many faults have you seen on this list attributed to poor PSUs?

> How many people whinge about the performance of their controllers/setups

> 'cos they find out _after_ they bought them just how naff they are?



A 750W supply doesn't increase server stability - that's what redundant PSUs 

are for.

Plus: there are sh!tty 750W-PSUs otu there as well - numbers mean jack.



>

> Sure he went a bit OTT in the description - but if you'd rather see "Hey

> dudez, what do I need for a really quick server" then #linux is good :)

>

> He's clearly new to linux, (and granted, maybe a bit over-excited by

> hardware!) but give the guy a break.

>

> He very clearly told us what he wanted to do in the QUESTIONs bit.



Could have done right from the start instead of immersing 

into  "Vista", "X-Fi" "8800" and "Radeon".



> And don't think too badly of Dexter, he's usually OK.



Guess I had a newbie overdose since migrating the desktop box to Kubuntu.



> David

>

> PS, Dex, I wonder who posted these noobie sounding question in April last

> year:

>

> I'm currently planning my first raid array.

> I intend to go for softraid (budget's the limiting factor), not sure about

> 5 or 6 yet.

>

> Plan so far: build a raid5 from 3 disks, later add a disk and reconf to

> raid6. Question: is that possible at all? Can a raid5 be reconfed to a

> raid6 with raidreconf?

> Next Question: how stable is it? Will I likely get away without making

> backups or is there like a 10% chance of failure?

> Other precautions advised?



Yes? What about that? All tech questions regarding file servers and raid 

setups on Linux. Don't see how I go about how my Radeon makes the 10k barrier 

in 3Dmark.



Nuff said.





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