http://www.google.com/search?q=AIC-7902+solaris - в первой пятёрке уверенно находится штатный драйвер adpu320.

You can drive out nature with a pitchfork
But it always comes roaring back again

http://en.wikipedia.org/wiki/RAID
Firmware/driver-based RAID

Operating system-based RAID doesn't always protect the boot process and is generally impractical on desktop versions of Windows (as described above). Hardware RAID controllers are expensive and proprietary. To fill this gap, cheap "RAID controllers" were introduced that do not contain a RAID controller chip, but simply a standard disk controller chip with special firmware and drivers. During early stage bootup the RAID is implemented by the firmware; when a protected-mode operating system kernel such as Linux or a modern version of Microsoft Windows is loaded the drivers take over.

These controllers are described by their manufacturers as RAID controllers, and it is rarely made clear to purchasers that the burden of RAID processing is borne by the host computer's central processing unit, not the RAID controller itself, thus introducing the aforementioned CPU overhead which hardware controllers don't suffer from. Firmware controllers often can only use certain types of hard drives in their RAID arrays (e.g. SATA for Intel Matrix RAID, as there is neither SCSI nor PATA support in modern Intel ICH southbridges; however, motherboard makers implement RAID controllers outside of the southbridge on some motherboards). Before their introduction, a "RAID controller" implied that the controller did the processing, and the new type has become known in technically knowledgeable circles as "fake RAID" even though the RAID itself is implemented correctly. Adaptec calls them "HostRAID".

Учитывая глючность дешёвых рейдов "по определению", я бы даже задумываться не стал на тему использования функционала такого контроллера.

You can drive out nature with a pitchfork
But it always comes roaring back again

2. Solaris Volume Manager или ZFS (первое проще, второе круче).

You can drive out nature with a pitchfork
But it always comes roaring back again

Почитать в документации - http://docs.sun.com/app/docs/doc/816-4520
Кластерваре работать поверх SVM будет. OCFS для соляриса нет. Данные зеркалировать в данном случае лучше SVM-ом.

You can drive out nature with a pitchfork
But it always comes roaring back again

В 10-м солярисе уже не поддерживается. Это продукт 90-х годов прошлого века, драйвер dpti2o.

You can drive out nature with a pitchfork
But it always comes roaring back again

А что за корзина-то?

AIC-7902 в этом смысле лучше - это хотя бы U320, а не U160. Ну или современные какие-нибудь SCSI-адаптеры можно купить, благо копейки стоят. Если корзина - тупой JBOD, то с двух узлов зеркало можно будет только программное сделать.

You can drive out nature with a pitchfork
But it always comes roaring back again

Вроде там был этот драйвер. Я бы всё же выкинул нафиг этот древний контроллер.

You can drive out nature with a pitchfork
But it always comes roaring back again