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Semi-New Build Setup Recommendations


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#21 RFOneWatt

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Posted 21 December 2014 - 08:50 PM

Another alternative is to get a IBM ServeRAID M1015 card, "cross flash" it, then one of those expander cards p3x-749 mentioned. Connect one port to the expand card. And the 5 ports on the expander to connect to the case. 

http://www.servetheh...ted-lsi-92208i/

http://www.newegg.co...7-207-_-Product

 

 

Personally, I'm using two M1015 cards (and a third one jus sitting there for future use).

 

Drashna,

 

Sorry to pop in with an "off topic" question but what's the benefit of if flashing the M1015 to IT mode rather than passing it through JBOD?  Just because it adds another layer? (as in ties those drives to that card?)

 

Is there a performance difference?

 

Also, can you freely flash back? (I don't see why not)

 

Those cards appear to be quite versatile and from what I understand, reliable.  Certainly affordable.

 

Thanks,

~RF



#22 Christopher (Drashna)

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Posted 22 December 2014 - 09:57 PM

The "IT" mode makes it "just" a HBA card. No RAID or anything. It passes the disks through to the OS directly. 

 

Also, "JBOD" is actually a JBOD, and considered an array, IIRC. There is a passthrough option for the IR (RAID) mode, IIRC, but as I don't intend on using RAID at all, it's simpler for me.

 

As for performance gain, there may be, but I haven't tested it out.

 

And as for flashing it back, or at least to IR mode, yes, you should be able to do that as well.

In fact, the "server the home" link above includes instructions on how to flash it to the other modes (or even back to "factory"). 

 

And yeah ,the card is very reliable. I've been using the cards for a while now and am very happy with the stability.

Also, LSI is an enterprise storage company, so I'd expect them to work very well.

 

Though, after researching it, I only need one card. A single PCI Express 2.0 8x card can support running 30-35 HDDs maxing their throughput (~100MB/s) at the same time. Since you would need an SAS Expander card to hit this number.... you'd only need one of the M1015 cards.  That SAS expander card would get you 5 SAS connection from the one (so 20 HDDs). Two expanders would get you 40 drives (in theory). 

And if you're using the drives with DrivePool, no need for RAID, so you're not going to be maxing all the drives at the same time. More than enough drives for just about anyone.


Christopher Courtney

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#23 RFOneWatt

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Posted 24 December 2014 - 12:58 PM

Thanks for the clarification Drashna. 

 

I was just curious as I have a LSI 9240-8i that I was considering using in a recent Norco 4220 build. This was my first experience with LSI stuff and I like it so far, for the most part.  I believe the M1015 is a clone of this card? 

 

I ended up going with Highpoint cards on this build though, pretty much because I had matching Highpoint cards on hand (a 2740 & 2720.) I am doing another build over the next couple of weeks and I think I'm going to go with LSI.

 

Question:  I've never used a SAS expander.  Do they work with most cards?

 

Everything I've ever done when it comes to RAID is enterprise class Adaptec.. no other real experience. (although I did some cool ISCSI stuff for a Casino a few years back with a Cisco storage router and an Apple SAN.. that was fun..)

 

Thanks!

 

~rf



#24 Christopher (Drashna)

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Posted 24 December 2014 - 08:00 PM

Yes, the M1015 is a "clone". Or more specifically, and OEM rebrand with custom firmware. 

 

Also, the Norco RPC-4220 case is a very nice one. I have one, in fact. :)

 

 

As for the SAS expander card, they're basically a SAS "switch". You plug in one or more cables, and you can attach many more.

They function in the same way that a "Port Multiplier" chip works in an external enclosure. But with a LOT more drives, and potentially much higher throughput.

 

 

They're not exactly cheap (but neither are the controllers).

http://www.newegg.co...N82E16816117207

 

In theory, SAS (what the LSI and highpoint cards are using) can address up to 255 drives (I think). That means, you can get far more than the 8 drives that the card can support by default.

 

As for compatibility, I'm not sure. In this case, you'd definitely want to contact the manufacturer and check beforehand.

 

 

 

And forgive me, I'm still rather new to the SAS and related tech, as I've only recently really started getting into it. However, I enjoy learning, and I find the enterprise tech very fun.

 

As for iSCSI, that is definitely pretty neat. And a great way to supply storage to systems without physical disks.

Though, what's really neat, is that if you do it right, you can boot windows off of an iSCSI volume. :)


Christopher Courtney

aka "Drashna"

Microsoft MVP for Windows Home Server 2009-2012

Lead Moderator for We Got Served

Moderator for Home Server Show

 

This is my server

 

Lots of "Other" data on your pool? Read about what it is here.





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