Hello,
I am trying to build a small cluster. I'm planning on using Infinibands QDR which has 5Gigabytes of throughput. The PCI-Express 2.0 standard maxes out at 4Gigabytes throughput for a 8lan bus which seems to be the standard for the raid cards I have been able to find.
Are there any uber raid 5 cards out there that will actualy pump io at 4Gigabytes given enough disks?
The best I have been able to find so far in my search is the LSI MegaRaid 9285 around $999 with two External SFF-8088 ports I was thinking of connecting this card to two Norco Technologies DS-24E around $1400 each. While I think two Norcos DS-24E's should pump 2400megabytes of info each 4800 megabytes total if I strip accross all 48 disks but I doubt if the LSI MegaRaid 9285 will handle that much information sustained and I am afraid Raid performance will decrease and obviously, another concern is if I strip across the 2 Norcos DS 24E's then any momentary disconnect of the cable would destroy the raid 5 which is far to risky to move forward with.
Ideally I am looking for 5 Gigabytes of throughput in and out of the raid 5 card with one common volume which will then be shared out through the Infiniband QDR network as cheaply as possible.
Anyway, if any of you guys has a better idea please let me know in the next couple months its 5/25/2011 as of this post.
I am trying to build a small cluster. I'm planning on using Infinibands QDR which has 5Gigabytes of throughput. The PCI-Express 2.0 standard maxes out at 4Gigabytes throughput for a 8lan bus which seems to be the standard for the raid cards I have been able to find.
Are there any uber raid 5 cards out there that will actualy pump io at 4Gigabytes given enough disks?
The best I have been able to find so far in my search is the LSI MegaRaid 9285 around $999 with two External SFF-8088 ports I was thinking of connecting this card to two Norco Technologies DS-24E around $1400 each. While I think two Norcos DS-24E's should pump 2400megabytes of info each 4800 megabytes total if I strip accross all 48 disks but I doubt if the LSI MegaRaid 9285 will handle that much information sustained and I am afraid Raid performance will decrease and obviously, another concern is if I strip across the 2 Norcos DS 24E's then any momentary disconnect of the cable would destroy the raid 5 which is far to risky to move forward with.
Ideally I am looking for 5 Gigabytes of throughput in and out of the raid 5 card with one common volume which will then be shared out through the Infiniband QDR network as cheaply as possible.
Anyway, if any of you guys has a better idea please let me know in the next couple months its 5/25/2011 as of this post.