Intel RCS25ZB040LX Hardware User Guide - Page 13

The Intel® RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX provides accelerated performance and improved manageability to MegaRAID with its two embedded Nytro Flash modules. The Intel® RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX uses Nytro Flash memory in front of the connected hard disk drive (HDD) volumes to create high-capacity and high-performance acceleration cache pools. The Intel® RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX is based on the LSISAS2208 RAID On-a-Chip (ROC). This device is compliant with the Fusion-MPT™ architecture and provides a PCI Express* x8 interface. The Intel® RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX provides enterprise class data protection and transparent performance acceleration to directattached SCSI storage volumes. The card provides reliability, high performance, and faulttolerant drive subsystem management. Performance acceleration is powered by intelligent caching using the onboard Nytro Flash module. Note: Care should be taken to assess any decision to mix SAS drives and SATA drives within the same virtual drive (VD). Although drives can be mixed, this practice is strongly discouraged because the drives have different performance and reliability characteristics and hence the SAS and SATA drives should not be mixed in the same enclosure. Key Features and Benefits of the Intel® RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX • Automatic self-starting and self-configuring of cache volumes • Supports both Read and Write caching • Transparent to applications, file systems, OSs, and device drivers • Provides an economical solution for accelerating applications - by storing frequently accessed data on low latency Nytro Flash modules while existing SAS or SATA connected hard drives to achieve a balance of performance and cost savings • Uses Nytro Flash modules reducing compatibility issues • Specialized server off load processors include the LSISAS2208 dual core RAID-on- Chip process and two LSI* SandForce® SF-2582 Nytro Flash modules • MD2 Low profile (6.6" X 2.536") • x8 PCI Express* 3.0 host interface • RAID level support for Nytro Flash modules as RAID 0 or RAID 1 - RAID 1 is enabled when the user enables the write-back mode of the cache - On initial power up, the card auto configures as Nytro Cache Drive Group 0, RAID 1, Write Back configuration • RAID level support for hard disk drives - RAID levels 0, 1, 5, and 6 Intel® RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX User Guide 3