Oracle Storage Drive Enclosure DE2-24
This section introduces the front and rear panel components of the DE2-24P and DE2-24C disk shelves.
DE2-24 Disk Shelf
The Oracle Storage Drive Enclosure DE2-24P is a 2U chassis that supports 24 2.5" SAS-2 drives. The high-capacity 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 83 DE2-24P 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.
External Read Cache Devices - Read cache devices, installed in DE2-24 disk shelves, are external to the controller and referred to as external second level adaptive replacement cache (EL2ARC). When a cluster takeover occurs, read cache remains persistent and sharable between controllers, enabling read performance to be sustained. For slot configuration details and minimum software requirements, see Disk Shelf Configurations.
Figure 84 DE2-24P Status Indicators (Front View)
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Figure 85 DE2-24P Rear Panel
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DE2-24C Disk Shelf
The Oracle Storage Drive Enclosure DE2-24C is a 4U chassis that supports 24 3.5" SAS-2 drives. The high-capacity 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 86 DE2-24C 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.
External Read Cache Devices - Read cache devices, installed in DE2-24 disk shelves, are external to the controller and referred to as external second level adaptive replacement cache (EL2ARC). When a cluster takeover occurs, read cache remains persistent and sharable between controllers, enabling read performance to be sustained. For slot configuration details and minimum software requirements, see Disk Shelf Configurations.
Figure 87 DE2-24C Status Indicators (Front View)
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Figure 88 DE2-24C Rear Panel
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Note - It is especially important that power supplies and their filler panels are in the correct slots.
Figure 89 DE2 I/O Module Indicators
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The DE2-24C and DE2-24P disk shelves use the same I/O Module.
Figure 90 DE2 Power Supply Indicators
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The DE2-24C and DE2-24P disk shelves use the same power supply.