Chapter 1 Introduction20 Storage Center SC8000 Controller Deployment GuideSC280 Drive NumberingSC280 drives are located in two drawers, each containing three rows of drives. The drivesare numbered 1–42 in drawer 1, from front to back and left to right, and 43–84 in drawer 2.Figure 16. Hard Drive NumberingSC200/220 SAS EnclosuresSAS enclosures hold drives for data storage and connect to the controllers throughback‐end ports. The Storage Center SC200 and SC220 are 2U size SAS enclosures. TheSC200 enclosure supports up to 12 3.5‐inch hard drives installed in a four‐column, three‐row configuration. The SC220 enclosure supports up to 24 2.5‐inch hard drives installedvertically side‐by‐side. The SC200 and SC220 enclosures ship with two power supply/cooling fan modules and two redundant enclosure management modules (EMMs).The following requirements apply to SC200 and SC220 enclosures: SC200 and SC220 enclosures cannot be connected to the same chain as any otherenclosures. Controllers must be running Storage Center OS 6.2 or later to detect SC200 and SC220enclosures.
