Daniel Kalchev daniel at digsys.bg
Wed Jun 1 08:39:36 UTC 2011

On 01.06.11 09:34, TJ Varghese wrote:
>> SuperMicro AOC-USAS2-L8i works exceptionally well.  These are 8-port HBAs
>> using the LSI1068 chipset, supported by the mpt(4) driver.  Support 3 Gpbs
>> SATA/SAS, using multi-lane cables (2 connectors on the card, each connector
>> supports 4 SATA ports), hot-plug, hot-swap.
> The USAS2 (6Gbps) is supported by the mps driver (on -CURRENT, not sure if
> it's in 8-STABLE yet). Perhaps you're referring to the earlier USAS which
> does 3Gbps and is supported by the mpt driver.

One should also bear in mind, that the 1068e based controllers 
(AOC-USAS-L8i) apparently have 2TB drive size limitation, therefore 
cannot be used with current 3TB (and who knows what capacities by the 
end of the year) drives. Otherwise, this is an well supported, high 
performance, stable and relatively cheap HBA to consider. The SAS2 (LSI 
2008 based) HBAs are also good, despite some firmware issues (mostly are 
related to use with SAS expanders) and do not have obvious limitations 
yet. These might be just a bit more expensive, but my Supermicro 
supplier advised delivery times for the older SAS (3Gbps) versions would 
be much longer.


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