figuerres wrote:

Uh ?

which is it the drives or the controller cards ??

whats the working environment ??
Data center ?

are they on UPS power ?

temp control ?

brand and models of drives ?

I have setup arrays that run for 2-3 years with parhaps 1 or 2 drive losses but never 2 at the same time....

For the record:

It is 4 identical Seagate 73GB SCSI HDD(ST373207LW) forming RAID 10 on a Adaptec 2130S controller.

A system check reveiled the Drive1 failed, and the Drive0 is in fact ok.

The server was located in a server rack inside our company's office, with 24hrs air-conditioning and UPS attached.