Oracle^® ZFS Storage Appliance Customer Service Manual

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, and the SSDs provide accelerated write operations. This disk shelf features dual, redundant I/O Modules (IOMs), and dual power supply with fan modules.

Figure 75  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.

External Read Cache Devices - Read cache devices, installed in DE3-24 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 76  DE3-24P Status Indicators (Front View)

Figure Legend 1 Locate indicator 2 Service required indicator 3 OK indicator 4 Power supply fault indicator 5 SAS I/O Module fault indicator 6 Power/Activity indicator 7 Drive service required indicator 8 Ready-to-remove indicator

Figure 77  DE3-24P Rear Panel

Figure Legend 1 Power supply with fan module 0 2 I/O Module 1 3 I/O Module 0 4 Power supply with fan module 1

DE3-24C Disk Shelf

The Oracle Storage Drive Enclosure DE3-24C is a 4U chassis that supports 24 3.5" SAS-3 drives. The SSDs provide accelerated write operations, and the high-capacity HDDs provide reliable storage. This disk shelf features dual, redundant I/O Modules (IOMs), and dual power supply with fan modules.

Figure 78  DE3-24C 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 DE3-24 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 79  DE3-24C Status Indicators (Front View)

Figure Legend 1 Locate indicator 2 Service required indicator 3 OK indicator 4 Power supply fault indicator 5 SAS I/O Module fault indicator 6 Ready-to-remove indicator 7 Drive service required indicator 8 Power/Activity indicator

Figure 80  DE3-24C Rear Panel

Figure Legend 1 Power supply filler panel, slot 4 2 I/O Module 1 3 I/O Module filler panel 4 Power supply with fan module 2 5 Power supply filler panel, slot 2 6 I/O Module filler panel 7 I/O Module 0 8 Power supply with fan module 1

Figure 81  DE3 I/O Module Indicators

Figure Legend 1 For Oracle service only 2 Locate indicator 3 Service required indicator 4 OK indicator 5 SAS-3 Port 0 6 SAS-3 Port 1 7 SAS-3 Port 2 8 SAS-3 Port 3 9 Host port activity indicator 10 Power/Activity indicator 11 Drive service required indicator 12 Ready-to-remove indicator 13 For Oracle service only

The DE3-24C and DE3-24P disk shelves use the same I/O Module.

Figure 82  DE3 Power Supply Indicators

Figure Legend 1 Power supply status indicator 2 AC power fail indicator 3 Fan fail indicator 4 DC power fail indicator 5 Universal power input connector 6 Power on/off switch

The DE3-24C and DE3-24P disk shelves use the same power supply.