After running well for many years, the SCSI array in this machine has started to show problems.
There is a double beep approximatly every second. The green light on the SCSI diskswhich are normally continuosly green flash red in time with the beeping (these are not the data access lights which flash green when accessing data they are the power lights)
The machine is running Windows NT but there is no information in any error logs
The reverse of the array casing has a sticker showing the number *S20-VP9662-100-1490126*
I do not know if this is a serial number or a part number
The Supermicro P6DGU/DBU motherboard with the onboard SCSI also has a sticker SM717856
All the SCSI disks were replaced a year ago and have been working well, The system can access the data on the drives but occasionally there are problems. I do not beleive it is a problem with a single disk as all disks flash together.
I guess the double beep is trying to inform me of the error but without manuals etc I cannot discover the fault - Cables? something else?