Overview of Disk Shelves
Oracle Storage Drive Enclosure DE3-24
This section introduces the front and rear panel components of the DE3-24P and DE3-24C disk
shelves.
DE3-24P Disk Shelf
The Oracle Storage Drive Enclosure DE3-24P is a 2U chassis that supports 24 2.5'' SAS-3
drives. The high-performance HDDs provide reliable storage. The SSDs provide accelerated
write operations, and for some controllers, read-optimized cache operations. This disk shelf
features dual, redundant I/O Modules (IOMs), and dual power supply with fan modules.
FIGURE 1
DE3-24P Drive Locations (Front View)
Up to four write-optimized log SSDs are supported per disk shelf. Log devices should be
populated in order of slots 20, 21, 22, and 23.
Read-optimized cache SSDs can also be installed in the DE3-24P disk shelf, for some
controllers. For slot configuration details and minimum software requirements, see “Disk Shelf
Configurations” in Oracle ZFS Storage Appliance Customer Service Manual.
20 Oracle ZFS Storage Appliance Installation Guide • December 2016
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