Estou testando a 5.0beta4.

"What's new in 5.0beta4 (2010-Jun-29 15:48):

*) console - /ping command again returns number of ping responses received,
didn't work in 5.0beta3;
*) added ability to monitor each cpu core usage;
*) added support for SATA,SCSI & USB CD-ROMs in CD installer;
*) fixed problem - IRQ balancer did not use correct CPU core
on non auto MSI irqs after reboot;
*) fixed memory leak;
*) route - new property 'vrf-interface' (for static and dhcp routes),
automatically updates 'routing-mark' of the route to keep it in the same
VRF as the specified interface;"

instalei o RouterOS em outro PC, levei para o servidor mais quando vai iniciar: acredite....

"Kernel Panic"

Acredito que seja a controladora que nao e reconhecida.

Veja isso:

"RouterOS v5 beta3 and newer supports the following SAS/SCSI chipsets:


fonte: MikroTik RouterOS • View topic - SAS Drive not found