The standard controller that has been recommended in the past is the AOC-SAT2-MV8 - an 8 port with a marvel chipset. There have been several mentions of LSI based controllers on the mailing lists and I'm wondering about them.
One obvious difference is that the Marvel contoller is PCI-X and the LSI controllers are PCI-E. Supermicro have several LSI controllers. AOC-USASLP-L8i with the LSI 1068E and AOC-USASLP-H8iR with the LSI 1078. Are they stable? How does is the performance compare to the Marvel? Does hot swap cause problems? The LSI1068E has 16MB SRAM onboard cache - I expect this helps performances, but does it causes issues with ZIL? The LSI1078 has 512MB DDR2 onboard cache with a battery backup option. With OpenSolaris will this function as a NVRAM when using the battery backup option, allowing "zil disable"? Has anyone tested this? Is it useful at all? There is also a Intel IOP348 8 port controller with 256MB DDR2 and battery backup. Does this work with OpenSolaris? How about the battery/cache function? Or is it better to consider SSD caches instead of the above for zfs? I'm building a new system and any thoughts on the above would be useful. Nicholas
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