Overview of Disk Shelves
Controller Max.
Shelves
Max.
2x4 Port
SAS-2
HBA
Max.
4x4 Port
SAS-2
HBA
Max.
4x4 Port
SAS-3
HBA
Guidelines
7120 2 1 NA NA Write-optimized SSDs are not supported in the expansion
storage for the 7120. The disk shelves must be fully
populated with 24 HDDs. You can also connect mixed
disk shelf types (DE2 and legacy Sun Disk Shelves) to
the same controllers.
Overview of Disk Shelves
This section provides an overview of the Oracle ZFS Storage Appliance disk shelves. For
installation instructions, refer to “Installing Disk Shelves” on page 89. For service
instructions, refer to “Servicing the Disk Shelves” in Oracle ZFS Storage Appliance Customer
Service Manual.
Oracle disk shelves are high-availability serial attached SCSI (SAS) devices that provide
expanded storage. The main components are hot-swappable, including drives, I/O Modules
(IOMs) or SAS Interface Module (SIM) boards for connecting to controllers and other disk
shelves, and dual load-sharing power supply with fan modules. This provides a fault-tolerant
environment with no single point of failure. Component status is indicated with lights on the
disk shelf, and in the Maintenance Hardware screen of the BUI.
To understand disk shelf components and configurations, see the following topics.
■
“Oracle Storage Drive Enclosure DE3-24” on page 25
■
“Oracle Storage Drive Enclosure DE2-24” on page 33
■
“Sun Disk Shelf” on page 39
■
“Disk Shelf Components” on page 43
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
Installation Prerequisites and Hardware Overviews 25
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