Note: “DASD” is a classic IBM mainframe term (Direct Access Storage Device). “DASD 620” is not a standard, widely known model number (like 3390 or 3380). I have interpreted this as a hypothetical or internal next-generation storage array for legacy or high-security environments. If this refers to a specific piece of equipment in your organization, you can swap in the specific specs. Back to the Future: Deploying the DASD 620 in a Hybrid Cloud World
April 14, 2026 Topic: Legacy Storage Architecture dasd 620
For those who came of age in the System/370 and System/390 era, "DASD" (Direct Access Storage Device) is a sacred term. It meant head actuators, rotating platters, and channel paths that never, ever failed. The DASD 620 takes that legacy and drags it—kicking and screaming—into the modern edge. Note: “DASD” is a classic IBM mainframe term