LSI RAID Controller help, 2308 chip on-board ASRock Extreme 11 motherboard is slow! - Page 2

Here's a helpful link for googling for people with similar issues and such.

http://forums.servethehome.com/showthread.php?599-LSI-RAID-Controller-and-HBA-Complete-Listing-Plus-OEM-Models&p=4320&viewfull=1#post4320

I started a new thread regarding the AE 11 in order centralize everything. http://www.overclock.net/t/1289956/asrock-x79-extreme-11-owners-issues-hopefully-fixes
Edited by theseekeroffun - 8/3/12 at 1:36pm

Like I was saying above, you should contact asrock, you just have a faulty board.

A 2308 Onboard Raid Controller - serisously ?

Iam still wondering you get out what you got.
This isnt a dedicaded Raidcontroller is more or less a Software Raid solution.


You have 3 Issues here.

1. briding to the Processor is usually not that fast as one or more dedicaded controller on a PCIE slot
2. lanes - even your drives are connected single iam not shure how many lanes those really are - each lane has usually multiple sata ports and a max of 6gbs with a little less in reality (specially with sas disk they eat up a little bandwith
3. processing of information is done by the cpu not the controller - even it has its own bios which makes it better than a usual software raid but still ..


#4 asrock - sorry man but you buy 8 ssd drives and try to save money on the board? serisously?


- if you really wanna go highspeed

1: buy a real server board - intel,tyan or supermicro
2: you might wanna test the onboard there but its not gonna be that better
3: get more than one dedicaded raidcontroller - but you got a problem
raidcontroller are not really made for ssds by now
that means they support 6GB/s each drive YES - BUT
every sas raidcontroller comes with mini sas connectors - one per 4 drives aka one lane -
and many controller have a max of xxx/ lane - so no sequential read write befenfit here in that case for benchis

of course in a real world loadout this is very different - you not have that theoretical max bandwith period BUT
specially with many small files, many clients on a server, access time and latency is still has a massive benefit


so what you need is a dedidcaded raid controller supports 6gb per port - but im not really shure about one
or multiple raidcontroller


but you dont really need that - look a dedicaded controller has 2 benefits to think of to get the real world traffic going
1. cache and BBU support (batter backup unit)
2. its own cpu so the lanes to the cpu and cpu itself has to handle way less


also dependig which raid level you use in case of a failure the reconstruction is way better and you can set it more specific (like less latency and faster rebuild and so on)



finally which raid level do you use? i may have overread it
but heres the thing -
for max performance raid 0 but it isnt a raid and chance of loosing data is with 8 drives 9 times higher

best performance WITH redundancy is raid 10 (each has 2 mirrors - mirros are striped minimum 4 disk, max whatever your controller can handle)

worst is raid 5 and 6 - they are bloody slow - only befefit is redudancy without loosing half of the drives - but seriously in today storage is relatily cheap so i dont see the point sacrifiing so much performance to save 1 or 2 disks


so go with raid 0 if you dont care and 10 if you do - use a dedicaded controller
get a real server board
get a xenon cpu

and forget about sequential read write benchis - they will only max out if your controller can handle 6bg/s per port
but even if he cannot it doenst really matter - random data/IO troughput that was usually matters


btw whats the real application here ? server? workstation? just benchmarks ?

... wow... I'm not touching that...

lol first post...

"#4 asrock - sorry man but you buy 8 ssd drives and try to save money on the board? serisously?"

Oooh, the seriously game. I love that game.

Seriously ? You registered to post that someone was saving money by buying the most expensive X79 board ? Seriously ?

Sorry man.