Hey everyone, I wanted to see if anyone has any experience with this card and specifically its raid 5 performance. Some of these cards look great on paper but once you throw 5-8 hard drives in there and set up Raid 5, reads /writes go through the floor.
Here are some of the specs for the card:
8 x SATA 6.0Gb/s
Supports data redundancy LSI SAS2108 ROC technology True MD2 form factor for low-profile height and half length adapter slots Includes a connector for optional hardware-based keys that easily plug in to unlock advanced software algorithms designed to improve performance and enhance data protection
SATA III (6.0Gb/s)
8 x SATA 6.0Gb/s
Supports data redundancy
LSI SAS2108 ROC technology
True MD2 form factor for low-profile height and half length adapter slots
Includes a connector for optional hardware-based keys that easily plug in to unlock advanced software algorithms designed to improve performance and enhance data protection.
Here is a link to the page on the Intel site:
I will be installing it in a workstation in a 16x PCI-e slot. (not rack mounted, so I don't require the low profile component, I'm hoping they include the larger metal piece in the back for a normal sized slot.) So, has anyone had any experience with this card? Is there anything I need to watch out for before buying this card? Does it fully support the speed of Sata III as advertised? My biggest concern is that the performance will take a nose dive when I configure it as raid 5. This has happened to me before with other "highpoint" cards, etc. I figure if I want the best performance I need to get the best card.
Any advice will be greatly appreciated. Also, if there is a different card that may work better for me, feel free to recommend it.
Thanks in advance!
To fully support SATA III / 6.0Gbps, you need to have the drives plugged directly in - no expander backplane. See http://www.intel.com/support/motherboards/server/rs2bl080/sb/CS-030631.htm
If your speed drops suddenly, check to make sure your cache settings haven't changed. See http://www.intel.com/support/motherboards/server/sb/CS-020926.htm
Just to be clear, after I plug the raid card into the PCI-e slot in the workstation, just make sure that each drive is directly connected to the card via the sata III cable.
To get to the origional question how is the real world performace of this ard in a raid 5 array? Most likely using 7200 sata III drives, not SAS,
In informal lab testing with the RT3WB080 using 7 SSD disks and no BBU with the following policies enabled:
Stripe Size 256K
I/O Policy Cached
Disk Cache Policy Enabled
Read Ahead Policy Always
Controller Cache Enabled
1MB - 100% read - 100% seq 1115 1115
1MB - 100% write - 100% seq 623 623
512B - 100% read - 100% random 23.5 48113
512B - 100% write - 100% random 6.7 13865
You see the performance in XOR streaming writes (includes RAID5 & RAID6) which is limited by the 256MB cache memory the RT3WB080 has.
I saw that you used SSD's, but would any SATA III drive work OK with this card? i.e.:
I need to move rather quick on this so I can get the external raid returned and get these new card/drives within the return window of my vendor.
I'll take a close look at the list. One final queston. This is going into a full stize tower workstation. It appears this card is half hight. Do you know if will fit in a full hight slot? i.e. Do you know if it comes with the metal back piece I can swap out from the short to the full height?
Obviously this is very important. Thanks again for all your help!
I checked http://usa.asus.com/Motherboards/Intel_Socket_1366/Rampage_III_Extreme/, but I don't see a Tested Adapter List. You may have to contact them directly, to make sure.
Dan-O: Do you anything about this add on tech and if it is worth the moeny and if so, how much?
Totally worth it. Since Intel doesn't do direct sales, you'll have to talk to your local reseller for pricing, though. If you don't already have one, check out http://www.intel.com/buy/premier/index.htm
What I am trying to figur e out ids what the optional accessories do? That will help me define if they are worth the moeny or not. Do you know that the 4 biillable options for the cardactually do? BTW... the card and 8 hitachi drives shuold be ehre tomorrow if all goes well.