Hardware User Guide

4 Intel® RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX User Guide
— RAID spans 10, 50, and 60
• Internal drive bay support
• JBOD mode support
• Nytro Flash module helps protect cache in the event of power fail — no battery
required
• SuperCap kit (option) to protect DRAM content in the event of power failure
• Faster rebuilds will occur due to servicing most storage requests from Nytro Flash
module
• Compatible with existing RWC2 management interfaces
• Zero administrative overhead
Configuration Scenarios
You can use the Intel
®
RAID SSD Cache Controller RCS25ZB040/RCS25ZB040LX in
the following scenarios:
• Internal SATA configuration: In this configuration, use the RAID card as a high-end
SATA, SATA II, or SATA III compatible card that directly-connects up to four drives
or to an internal expander. This configuration is mostly for low-end or entry servers.
Enclosure management is provided through an out-of-band I
2
C bus.
• Midrange internal SAS configuration: This configuration is like an internal SATA
configuration, but with high-end SAS drives. This configuration is more suitable for
low-range to midrange servers.
The following figure illustrates a direct-connect configuration. The Inter-IC (I
2
C)
interface communicates with peripherals. The external memory bus provides a 32-bit
memory bus, parity checking, and chip select signals for pipelined synchronous burst
static random access memory (PSBRAM), non-volatile static random access memory
(NVSRAM), and Flash ROM. The card can connect to an internal drive bay that uses an
expander.