After performing a hardware upgrade from an //M20R2 to a //X20R3-EMEZZ, a customer wants to...

To perform this specific "SAS-to-NVMe" media refresh during an upgrade, aSAS Swing Shelfis required.

The scenario describes a transition from a FlashArray//M (SAS-based chassis) to a FlashArray//X (NVMe-based chassis). The customer intends to retire the old SAS SSDs (the "SAS Chassis Data Packs") and move to new DirectFlash Modules (DFMs).

The Constraint:The old SAS drives physically cannot be inserted into the new //X NVMe chassis.

The Workflow:To migrate the data, the old SAS drives must be temporarily attached to the new //X controller as external capacity. Since they were originallyinternalchassis drives, they have no enclosure. Therefore, the engineer needs an emptySAS expansion shelf(Swing Shelf) to house these legacy drives.

Process:

Install the new //X chassis with the new DFMs.

Install the SAS Swing Shelf and populate it with the old SAS drives from the //M chassis.

Connect the SAS shelf to the //X controller (requires SAS connectivity).

The system sees the old data (external) and the new capacity (internal).

The system evacuates the data from the SAS shelf to the internal DFMs.

Once empty, the SAS shelf is removed.

A "DFM Swing Shelf" (Option A) would not help read the old SAS drives.