SATA SSD + SCSI Disk in RAID?

[toscrawford]

I've got an old server, Dell PE 2850 with built in SCSI RAID (6-drive). That's nice and all, but I'd like to throw in a SATA SSD. I recon I could do some sort of software RAID between the the SSD and the Disk, but I don't want to do that.

Is it possible, with a small expenditure on a PCIe card, to hardware raid between SATA and SCSI? I'm guessing not because both sets of drives would have to plug into the same card for the RAID to work and who would make a card that has both SATA and SCSI ports?

 

[Dereck47]

I'm guessing not because both sets of drives would have to plug into the same card for the RAID to work and who would make a card that has both SATA and SCSI ports?

Correct. You could do a search for "SATA to SCSI" cables but I don't think it would be worth it.

A RAID array's Read/Write performance is based upon the drive in the array with the slowest Read/Write speeds so it's not worth it to mix SSDs and HDDs when creating a RAID array.

 

[zdbc13]

You could put in an SSD and load the operating system there. Just use your SCSI raid system for storage.

 

[toscrawford]

Dereck47, I have a slightly different understanding of RAID 1. My understanding is the write is performed at the speed of the slowest drive, and the read is performed at the speed of the fastest drive.

zdbc13, I was trying to find a different answer, but no luck so far.