PCIe3 x8 cache SAS RAID internal adapter 6Gb (FC EL3U; CCIN 57D8)

Overview

The expanded function PCIe3 x8 cache SAS RAID internal adapter 6Gb is an internal PCI Express generation-3 (PCIe3), serial-attached SCSI (SAS) Random Array of Independent Disks (RAID) adapter that is integrated in the 8247-21L or 8247-22L. The PCIe3 x8 cache SAS RAID internal adapter 6Gb is a composite feature of the high-function storage backplane (FC EL3U). The adapter contains the SAS RAID controller and SAS Expander ports.

Alternatively, you can upgrade your system that has the storage backplane FC EL3T to a high-function system by ordering the composite high-function storage backplane feature (FC EL3U).

The PCIe3 x8 cache SAS RAID internal adapter 6Gb has a data read or write speed of 6 Gbps and a real write cache of 2 GB. With a 4:1 cache compression, this high-function adapter provides an increased cache of 8 GB and increases the storage system performance. The write cache contents are protected against power loss with flash memory and super capacitors and removes the need for cache battery.

The two mini-SAS HD cables connect each of the PCIe3 x8 cache SAS RAID internal adapter 6Gb to the two SAS ports on the storage backplane. The high-function internal adapters supports both the drives (SFF and SSDs) to be used in a RAID configuration. The supported RAID configurations include, RAID 0, 5, 6, 10, 5T2, 6T2, and 10T2. The second PCIe3 x8 cache SAS RAID internal adapter 6Gb in slot P1-C15 controls the slim DVD bay. The high-function storage backplane does not support the split storage backplane configuration.

Each of the internal adapters provides a mini-SAS HD connector that attaches to a mini-SAS HD cable (YO) and provided with two external SAS ports on the other end. In the 8247-21L or 8247-22L, the external SAS ports are installed in slot P1-C8. The external SAS port is used to attach the FC EL1S drive enclosure. Only one EL1S drive enclosure is supported by the high-function internal adapter pair.

Systems running the Linux operating system support both adapters RAID controllers that are owned by the same or different partitions. Linux also provide mirroring (logical volume manager (LVM)) capabilities. The dual controllers support the Easy Tier® function that enables the controllers to automatically move hot data to attached SSDs and cold data to attached HDDs in the Linux systems.

Figure 1. PCIe3 x8 cache SAS RAID internal adapter 6Gb

Specifications

Item

Description

Adapter CCIN number

57D8

I/O bus architecture

PCIe3 x8

Slot requirement

Internal PCIe3 slot with x16 connector and x8 bus signaling per adapter.

High-function configuration: Two adapters are installed in slot P1-C14 and P1-C15.

Cables

Two mini-SAS HD cables that are supplied with the adapter. A SAS cable (YO) with mini-SAS connectors and external SAS ports can be attached to the high-function internal adapters.

Voltage

12 V

Operating system or partition requirements