Where can I find guidelines for building a SQL Server machine specifically for DBCC CHECKDB work? I'm working on defining specs for a new server to run DBCC CHECKDB scans on all databases in our portfolio (85 instances, 1300 DBs, 15 TB allocated). I have a custom application that copies dump files to a single server, then performs the restore and DBCC and required logging for reporting, but sequential I/O throughput is my bottleneck (I was working with set of RAID 6 LUNs from our SAN using 7.2K spindles, getting 300 MB/s read but only 50 MB/s write).

Is there a whitepaper or other resource available to help spec out a server for Maximum Consumption Rate specifically for DBCC? I looked at the MSFT whitepaper for Fast Track Data Warehouse servers, but I'm not sure it's the right fit.

Thinking outside the box, I'm contemplating going to a DAS enclosure like PowerVault and using RAID 0. The system DBs will be on RAID 1 on local storage but using RAID 0 for the restore and DBCC work makes sense because as soon as I finish testing a DB I drop the DB to make room for the next one. I can keep a few spindles as hot spares to rebuild a down array if needed and pick up where I leave off.

Any suggestions would be deeply appreciated!
You want disks that are as fast as you can afford.  DBCC CHECKDB is going to be limited by physical IO speed and pretty much nothing else.

That said, you do still need to run DBCC CHECKDB on your production server as you aren't doing physical IO checks on the production server at this point.