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brian89gp

Intel RES2SV240 $60 + S&H

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Fantastic deal if this works.  I got mine from Amazon, so I pretty much paid full retail price.  But great expander card.

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Could you use this in place of a AOC-SAS2LP-MV8 or LSI 9240-8i? or is this for a completely different application?

 

Thank you

You would connect the LSI 9240-8i to the RES2SV240 to multiply the ports to a maximum of 24 off a single LSI 9240-8i controller. 

 

FYI: With 19 drives connected to a single IBM M1015 and RES2SV240 I get 90-100+MB/s on the outer tracks on a 4TB WD Red drive.  So about a 25% speed drop from using 3 IBM M1015 controllers using the same 19 drives.

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Could you use this in place of a AOC-SAS2LP-MV8 or LSI 9240-8i? or is this for a completely different application?

 

Thank you

This is a SAS expander, which requires a SAS controller like those you mentioned. The expander increases the number of drives the controller can connect.

 

 

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Could you use this in place of a AOC-SAS2LP-MV8 or LSI 9240-8i? or is this for a completely different application?

 

Thank you

This is a SAS expander, which requires a SAS controller like those you mentioned. The expander increases the number of drives the controller can connect.

 

Thanks for the explanation!

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Have 4 in the mail, got for $255 shipped (total).  Offer was accepted after about 24 hours.

Did the same thing,  going to use one in my server rebuild and stash the others for customer builds.

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Mine arrived today, well packed in original box.  They came with both high and low profile PCI slot plates and (6) SAS cables.

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Mine arrived today, well packed in original box.  They came with both high and low profile PCI slot plates and (6) SAS cables.

I wasn't expecting it to come like that.  I was/am expecting this to just be the card (just ordered one) so hope mine comes the same way.  This sounds like what I got when I ordered from Amazon/Newegg for my first 3 a year or two ago and I didn't think it was a bulk pack like ebay listing says.  Guess I was wrong. 

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Mine arrived today, well packed in original box.  They came with both high and low profile PCI slot plates and (6) SAS cables.

I wasn't expecting it to come like that.  I was/am expecting this to just be the card (just ordered one) so hope mine comes the same way.  This sounds like what I got when I ordered from Amazon/Newegg for my first 3 a year or two ago and I didn't think it was a bulk pack like ebay listing says.  Guess I was wrong.

 

They shipped my 4 boxed cards in a box that fit 5 of them and had RES2SV240 stickers on the outside, the 5-pack box is probably the "bulk" part of it.  Its original Intel packaging, has the serial number of the card on the sticker stuck on the box.

 

I remember paying $5 per SAS cable a while back, thats $30 right there.

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Thanks for the heads up. Really nice deal given that I received the full package with cables. Not like the server pull jobs without brackets that I'm used to.

 

Now just got to figure out a way to secure this to the case given that I'm using the molex and don't have a spare pcie port to plug it in.

 

 

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I just got one of these yesterday. $60 + $12 shipping.

 

Like others have said came complete with 6 cables.

 

Really great deal. Maybe have to order another one for future use.

 

Mark

 

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I got my three a little while back now. Came packaged just fine.

 

I got mine only because they were so cheap.  I had been planning to reuse the Chenbro expander that is in my current build but with this being cheaper I figured why not.

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Best way to use there? (Assuming an M1015 or a SAS2LP card feeding it)

 

Assuming controller is installed in a PCIe x8 v2 slot.

 

(And I'm talking about spinners, not SSDs)

 

1 in 5 out (4 to 20 drives)?

1 in 4 out (4 to 16 drives) Would be possible to use two of these so you'd be able to support 32 drives off of a single 2 SAS port card.

2 in 4 out (8 to 16 drives)?

2 in 3 out (8 to 12 drives)?

 

I expect 2 in 4 out is the most common, but just curious on best use without clipping parity check performance significantly.

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Best way to use there? (Assuming an M1015 or a SAS2LP card feeding it)

 

Assuming controller is installed in a PCIe x8 v2 slot.

 

(And I'm talking about spinners, not SSDs)

 

1 in 5 out (4 to 20 drives)?

1 in 4 out (4 to 16 drives) Would be possible to use two of these so you'd be able to support 32 drives off of a single 2 SAS port card.

2 in 4 out (8 to 16 drives)?

2 in 3 out (8 to 12 drives)?

 

I expect 2 in 4 out is the most common, but just curious on best use without clipping parity check performance significantly.

 

The PCIe x8 v2 SAS card would have a maximum of 32Gb/s or 4GB/s

4 lane SAS2 is 24Gb/s or 3GB/s

    20 drives on 4 lanes would yield 1.2Gb/s per drive still, or 153MB/s

 

There is 48Gb/s of SAS2 bandwidth sitting on a 32Gb/s PCIe bus, the card is already oversubscribed bandwidth wise.

 

Unless you follow the overclocker mentality of demanding the utmost performance, I don't think that there would be much lost by the 1-in-5-out option with the other 4 lanes on the PCIe card directly driving the parity and cache drives. 

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For my personal use I go with 2 in from the M1015 and 4 out to the backplanes in my Norco 4020.  I use the bottom 4 rows for unRAID and the top for are the ESXi datastore.

 

For a Norco 4224 I have done 1 in and 5 out and then the second M1015 port for the last backplane.  I saw very little difference in speed.  This left the motherboard ports free for ESXi datastore drives.

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With mine configured as follows:

  • 1 M1015
  • 1 in 5 out
  • 16 drives connected (Seagate 3TB DM001 drives)

I get a 25% reduction in speed compared to two M1015s with the same 16 drives.

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With mine configured as follows:

  • 1 M1015
  • 1 in 5 out
  • 16 drives connected (Seagate 3TB DM001 drives)

I get a 25% reduction in speed compared to two M1015s with the same 16 drives.

 

I in 5 out would allow 20 drives plus the other 4 from the second SAS connector=24. Can you clarify how you connected the 16 drives?  Is the M1015 in a PCIe 2.0 slot?

 

Would be interesting to see the difference in changing to a 2 in 4 out configuration. Seems you have the perfect number of drives for that.

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With mine configured as follows:

  • 1 M1015
  • 1 in 5 out
  • 16 drives connected (Seagate 3TB DM001 drives)

I get a 25% reduction in speed compared to two M1015s with the same 16 drives.

 

I in 5 out would allow 20 drives plus the other 4 from the second SAS connector=24. Can you clarify how you connected the 16 drives?  Is the M1015 in a PCIe 2.0 slot?

 

Would be interesting to see the difference in changing to a 2 in 4 out configuration. Seems you have the perfect number of drives for that.

Correct.  I have a bunch of empty connections currently in my 5x3s.  I setup to allow 24 drives but I currently only have 16 installed.

 

MB Tyan S5512 installed in x16(x8 electrical since using other x8 slots) PCIe 2.0 slot under ESXi 5.0 unRAID VM.

 

When I installed 2nd M1015 into x8 slot next to x16 I had to pass through that controller to unRAID VM as well.  But in that test I had to reconnect only the drives installed since I was limited to 16 drives.  I will lookup my post with the results but will take a while.

 

Edit here is the thread where I posted my results:

http://lime-technology.com/forum/index.php?topic=33461.msg309007#msg309007

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