** sorry for the long post - I've included background to try and make my questions clearer - and while the questions are nforce430 related - they do push the thread hijacking boundry **
I am looking to setup RAID arrays on my K8NGM2-FID. On my servers @ work I like to use smaller 2x 80GB HDDs in RAID0 (striping) for optimal performance and 5x 136GB HDDs for RAID0+1(striping+fault tolerance) or RAID1 (fault tolerance) for data. I would like to implement similar OS / DATA RAID arrays on my K8NGM2-FID (overkill you say?probably - but it keeps me entertained ;-)
The immediate problems are noise and the limitation of 4 SATA drives on the Nforce 430 chip.
1) Why not use a small NAS. Unforntunatly, both DIY NAS or consumer level options (i.e. Infrant) are beyond my budget. I have concluded that a 4x Infiniband (SATA Multilane) scenario is the best option. Why not use normal SATA or eSATA cables? Having 3-4 data cables hanging out of the case, even bundled with nice tubing, is too messy, and my mATX case does not have enough space for 4x internal to eSATA adapters. (FYI: after some price searches it seems that a multi-bay external HDD enclosure with 4x eSATA cables going back to the host is about the same cost as single 4x Infiniband cable with SATA/Infiniband converters)
2) Ideally I want to seperate my OS and DATA. I will ghost the OS array - therefore I dont care about fault tolerance. I intend to store my movies + HD content on the DATA array and since I dont have $$ for an 100GB autoloader, backup will be an issue... thus a minimal fault tolerance from RAID1, or 0+1 will allow me to sleep at night.
So my questions are:
1) are there significant performance differences between nforce430 raid and a dedicated PCI raid controller? has anyone seen a decent 4-port SATA2 raid controller for PCIe? I've only seen 2-port PCIe x1 cards or 4-port PCI-X cards [
http://www.addonics.com/products/multilane/ad4saml.asp] which the K8NGM2 does not have. Does the 32bit PCI slot even have enough bandwidth for SATA2 raid?)
2) Do 4x Infiniband/SATA converters require power or a special controller? Will it even work with the nforce 430 controller? [
http://www.addonics.com/products/multilane/connector.asp]
3) Does anyone have experience with / knowledge of SATA Port Multipliers? [
http://www.cooldrives.com/cosapomubrso.html]I am assuming that the nforce 430 does not support "port multiplers" and I would need a PCI controller like this [
http://www.cooldrives.com/rasaii3g4p1e.html] - any thoughts? I mean can trunking a 4 drive raid array into ONE single lane cable REALLY be a good idea? I can only think that performance would suffer compared to the 'true' 4x lanes provided by Infiniband... right?
EDIT: Here is the SATA spec on port-multipliers - but I cant really believe that there is no performance loss over standard point-to-point SATA connections...
http://www.sata-io.org/portmultiplier.asp
EDIT2: the really annoying thing is that once you post questions - you find answers...these guys are MAC fanboys - but SATA is SATA regardless of OS. ;-)
[*]
http://www.macgurus.com/productpages/sata/PortMultiplicationGuide.php
[*]
http://www.macgurus.com/productpages/sata/sataguide_1.php
[*]
http://www.macgurus.com/productpages/sata/hotswapsataguide_1.php
Still hoping for input / opinions on nforce430 raid, infiniband vs port-multipliers, and general K8NGM2 raid issues.