Hardware User Guide

2 Intel® RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX User Guide
Note: Convention of usage of important terms:
Nytro Cache: This term refers to the SSD Flash module used for user data cache, called
Nytro Cache.
SSD: This term refers to external SSDs.
Intel offers Intel
®
RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX family to
provide enterprise proven performance acceleration and data protection for direct attach
storage (DAS). The differences between the Intel
®
RAID SSD Cache Controller
RCS25ZB040/RCS25ZB040LX family members are the amount of Flash memory
mounted on the controller as shown in the following table:
Table 1. Intel
®
RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX
Board Sizes
Note: In addition to the cache capacity listed in this document, an additional 25% is held in
reserve as “over provisioned” capacity to extend the usable life of the product.
These cards address the growing demand for increased data throughput in database
applications, cloud computing, and data centers. These controllers provide:
• A four-lane mini-SAS connector for internal disk connection to 6.0 Gb/s SAS/SATA
hard disk drives or for internal drive bay connection
• An eight-lane, PCI Express* 3.0 host interface
• Direct attached Nytro Flash modules - up to 1TB capacity (two Nytro Flash
modules)
• Flash volumes for caching
— Nytro Flash modules are automatically configured to single Nytro cache drive
by default
— Existing and new Nytro cache drives automatically assigned for caching
• Optional SuperCap connection to protect DRAM content in the event of power
failure
• Caching lightens the HDD load so that HDD RAID rebuilds complete faster and
removes traditional HDD head wear from accessing small block requests typical in
database environments
Intel
®
RAID SSD Cache Controller
RCS25ZB040/RCS25ZB040LX
Flash Capacity
Intel
®
RAID SSD Cache Controller
RCS25ZB040
256 GB
Intel
®
RAID SSD Cache Controller
RCS25ZB040LX
1 TB