Re: "How I built a 2.8TB RAID storage array"... 7 months later



SATA would def. be easier to fit in the case. The problem is SATA HDs
are generally 2 times more expensive per unit GB
(http://froogle.google.com/froogle_cluster?q=sata+hd+400gb+seagate&pid=4834532080212863534&oid=17107459099906820246&btnG=Search+Froogle&scoring=p
). Many Ultra ATA HDs come on sale. I have bought 3 HD 300 GB+ for ~
100 $ each. When taking into account 8 to 12 HDs, it is more cost
effective to get ATA.

Do you know where I can obtain SATA HDs for about 200 $? This will
probably make me think twice.

ACTUALLY: I just looked this up again and it looks like they are about
the same price.... What else do i have to consider when gettting SATA
HDs?

While it is true that SATA has a higher speed capacity than ATA and
allows for better compatibility with hardware RAID, "the transfer rate
is only slightly faster" than Ultra ATA 133 and software raid is going
to be used for the reason posted in reference thread.

George Pontis wrote:
If you want to go much cheaper, you could get a non-server motherboard
with multiple Serial ATA capability. For instance, the Asus A8N-SLI
Premium has 8 S-ATA II connectors which can be arranged into two banks
of RAID 0, 1, or 0+1 (I think). With a modest CPU it would only cost
$350. SATA would be easier to neatly cable up inside your case too. You
can use ECC RAM in this motherboard.

Or, you use Areca ARC1220 in the same mobo for 8 SATA-II in any RAID
0,1,5, or 6.

I don't see why you need a server motherboard, except that the 3Ware
board has a PCI-X interface for better bus speed. The Areca uses PCI-E
X8 which is more modern and much faster yet. You could plug it into an
X16 slot on the motherboard.

So there are some thoughts. I don't have any real experience with this
so do check for yourself if this hardware would all be compatible.

Parag Baxi wrote:
> Shamelessly taken from this thread:
> http://groups.google.com/group/alt.comp.hardware.pc-homebuilt/browse_frm/thread/63ac764decdbfef4/f8479484a5254f5d?q=storage+array&rnum=2#f8479484a5254f5d
>
> WARNING: I'M A NEWBIE AT BUILDING SYSTEMS. I'm asking for advice.
>
> I have now read the above thread about 6 times over the past 4 days.
> This thread has become a starting point for so many learning points to
> undersand exactly what was being written. I have learned a great deal
> and am inspired to build one myself.
>
> My question on this thread is, now that it's been 7 months since its
> inception, would YOU do anything different. I'll copy and paste his
> specs and add what I want to do. Please keep in mind I'm a newbie at
> building systems but I'm very persistent and willing to listen and
> question. Now, on we move!
>
> STORAGE MEDIUM
> Actual: Nine 400GB PATA drives;
> mine: i want basically same thing, but my controller + case allows for
> more extensibility. hoping to buy as they come on sale (individually
> or same time)
>
> CASE
> Actual: Antec 4U rackmount case.
> mine: Lian LI V PC-V2100A Plus
> (http://www.newegg.com/Product/Product.asp?Item=N82E16811112093#DetailSpecs)
>
> MOTHERBOARD
> Actual: Gigabyte X5DAL-G Intel server motherboard
> mine: i'm really lost here... he lucked out on a cheap deal with ebay.
> if i were to buy one from them, it'd be very difficult to search by
> motherboard. what other MBs do you recommend?
>
> CONTROLLER CARDS
> Actual: Two 3Ware 7506-4LP cards.
> mine: i was thinking, why not use my case to the max and get a 7506-8LP
> now, and when it fills up, get another one. the case holds 7 External
> 5.25" Drive Bays and 12 Internal 3.5" Drive Bays
>
> RAM
> Actual: 2 GB DDR
> mine: i'm thinking 1 GB is enough. DDR or DDR2?
> SOFTWARE
> Actual: Linux software RAID 5 and JFS.
> mine: i'm lost on any other way. i read his link and feel i'm not
> ready to experiment
> COST
> him: 4100 $
> willing to shell out 3000 $ and add HDs as they come cheap.
>
> ASSEMBLY: SOFTWARE
> Actual: Fedora Core 3 & JFS
> mine: i don't know if Debian can support this hardware, but that's what
> i prefer.'
>
> ok, again, i don't know much so there is probably 10 things wrong with
> each choice i made. I'd appreciate if you tell me why it's wrong. I
> appreciate it that you even read this far.
>
> -- ghee22

.



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