Hello,
I always used HW RAID and setup various cards (LSI mainly) w/ BBU.
Currently, some low-cost RAID cards remains and i'd like to use them on my personal rigs.
On a previous rig, i tested this setup :
3 * SSD + LSI 9260-4i (WB mode) : ~ 600 MB/s read.
I had to move the LSI to another rig.
It remains some cheap RAID cards : IBM M1015, IBM BR10i, Dell H200, etc.
All of these are : No Cache / No BBU.
My read speed slows down to 200/250 MB/s due to WT mode.
I tried to force WT without success on these cards.
But, i was very surprised by mobilenvidia's M1015 experiences reaching 1 to 2GB/s speeds ...
Even w/ 4 SSD i can't imagine that in WT mode...
So my questions :
- Is there anyway to enable WT mode on these cards (i tried disk cache but don't really see a difference) ?
- For my need (max throughput / RAID0), do i have to simply use onboard ports w/ Intel Matrix Manager (i remember that write cache could be enabled contrarily to these RAID cards) ?
Thank you.
I always used HW RAID and setup various cards (LSI mainly) w/ BBU.
Currently, some low-cost RAID cards remains and i'd like to use them on my personal rigs.
On a previous rig, i tested this setup :
3 * SSD + LSI 9260-4i (WB mode) : ~ 600 MB/s read.
I had to move the LSI to another rig.
It remains some cheap RAID cards : IBM M1015, IBM BR10i, Dell H200, etc.
All of these are : No Cache / No BBU.
My read speed slows down to 200/250 MB/s due to WT mode.
I tried to force WT without success on these cards.
But, i was very surprised by mobilenvidia's M1015 experiences reaching 1 to 2GB/s speeds ...
Even w/ 4 SSD i can't imagine that in WT mode...
So my questions :
- Is there anyway to enable WT mode on these cards (i tried disk cache but don't really see a difference) ?
- For my need (max throughput / RAID0), do i have to simply use onboard ports w/ Intel Matrix Manager (i remember that write cache could be enabled contrarily to these RAID cards) ?
Thank you.