On 03/06/2011 09:00 AM, compdoc wrote:
>
>> >Regarding the Marvell drivers, I had good luck with the 'sata_mv' driver
>> >in Scientific Linux 6 just yesterday, running a pair of 4-port PCIe-x4
>> >Tempo 'Sonnet' controller cards.
> Are those the Mac/Windows Sonnet cards that go for less than $200?
>
> What kind of performance you seeing? Are you doing software raid on them?
Yes, those are the cards which target Windows and OS-X, but they work
fine on Linux as well. They use the Marvell 88SX series chips.
They control 6 2TB WD Caviar Black drives, arranged as 5 drives in a
RAID-6 array with one hot spare. 3 drives are connected to each of two
cards. mdstat shows array re-sync speed is usually over 100 MBytes/sec
although that tends to vary quite a bit over time.
> ------------------------------
> On 03/06/2011 09:00 AM, John R Pierce wrote:
>
> On 03/05/11 7:01 AM, Eero Volotinen wrote:
>> >
>> > areca works..
>> >
>> >
> for SAS, I prefer LSI Logic.
The Supermicro mobo I'm using (X8DAL-3) has an on-board LSI 1068E
SAS/SATA controller chip, although I have the RAID functionality
disabled so I can use it as a bunch of drives for software RAID-6. Like
the Tempo cards, it has 6 2TB WD SATA drives attached which provides a
second set of arrays.
Performance really sucks, for some unknown reason, and I get lots of I/O
error messages logged when the drives get busy. There appears to be no
data corruption, just a lot of retries that slow things down significantly.
The LSI web site has no info about the errors. The firmware is passing
back I/O abort code 0403 and LSI Debug info related to "channel 0 id 9".
There are only 8 ports so I don't know which disk drive may or may not
be causing problems. The SMART data on all disks shows no issues,
although I tend to treat some SMART data with scepticism.
I need to track this error down because my understanding is that the LSI
controller chip has very good performance.
Chuck
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