brian89gp Posted February 23, 2015 Share Posted February 23, 2015 http://www.servethehome.com/byo-sas-expander-deal-intel-res2sv240-sas-2-expander/ Quote Link to comment
kaiguy Posted February 24, 2015 Share Posted February 24, 2015 Fantastic deal if this works. I got mine from Amazon, so I pretty much paid full retail price. But great expander card. Quote Link to comment
eroz Posted February 24, 2015 Share Posted February 24, 2015 I gave it a shot yesterday, haven't heard back either way. Quote Link to comment
brian89gp Posted February 24, 2015 Author Share Posted February 24, 2015 Have 4 in the mail, got for $255 shipped (total). Offer was accepted after about 24 hours. Quote Link to comment
dluusional Posted February 24, 2015 Share Posted February 24, 2015 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 Quote Link to comment
BobPhoenix Posted February 24, 2015 Share Posted February 24, 2015 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. Quote Link to comment
c3 Posted February 24, 2015 Share Posted February 24, 2015 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. Quote Link to comment
eroz Posted February 24, 2015 Share Posted February 24, 2015 Awesome was just accepted and paid for! Quote Link to comment
dluusional Posted February 25, 2015 Share Posted February 25, 2015 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! Quote Link to comment
prostuff1 Posted February 25, 2015 Share Posted February 25, 2015 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. Quote Link to comment
brian89gp Posted February 26, 2015 Author Share Posted February 26, 2015 Mine arrived today, well packed in original box. They came with both high and low profile PCI slot plates and (6) SAS cables. Quote Link to comment
BobPhoenix Posted February 27, 2015 Share Posted February 27, 2015 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. Quote Link to comment
brian89gp Posted February 27, 2015 Author Share Posted February 27, 2015 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. Quote Link to comment
jamerson9 Posted February 28, 2015 Share Posted February 28, 2015 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. Quote Link to comment
Marky Posted March 14, 2015 Share Posted March 14, 2015 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 Quote Link to comment
prostuff1 Posted March 16, 2015 Share Posted March 16, 2015 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. Quote Link to comment
SSD Posted March 21, 2015 Share Posted March 21, 2015 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. Quote Link to comment
brian89gp Posted March 22, 2015 Author Share Posted March 22, 2015 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. Quote Link to comment
prostuff1 Posted March 22, 2015 Share Posted March 22, 2015 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. Quote Link to comment
BobPhoenix Posted March 25, 2015 Share Posted March 25, 2015 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. Quote Link to comment
SSD Posted March 25, 2015 Share Posted March 25, 2015 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. Quote Link to comment
BobPhoenix Posted March 25, 2015 Share Posted March 25, 2015 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 Quote Link to comment
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