Juniper-networks MX480 Manual de usuario Pagina 47

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MX480 Application Services Modular Storage Card Overview
MX480 Application Services Modular Storage Card Description on page 23
MX480 AS MSC LEDs on page 24
MX480 Application Services Modular Storage Card Description
Application Services Modular Storage Card (AS MSC) is a NAND Flash––based card that
is inserted into the upper slot of the Application Services Modular Line Card (AS MLC).
The AS MSC (see Figure 12 on page 23) serves as the second tier caching storage for
platforms such as the Junos Content Encore system. This card is equivalent to a PIC or
a Modular Interface Card (MIC) and provides a maximum of 36 Gbps read and 2 Gbps
of write memory.
The AS MSC has the following features:
6.4 TB NAND Flash memory
Up to 48K of write cycle
Multilevel cell (MLC) NAND memory support
Best-in-class NAND controller for maximum performance and reliability
AS MSCs are hot-removable and hot-insertable. One AS MSC can be installed in the top
slot of each AS MLC. Each AS MSC has these components:
SATA-3 controller—An eight-port, 6 Gbps SAS/SATA controller.
NAND Flash controller—Each controller can access 512 GB, and eight controllers
communicate with one Raid on chip (ROC). NAND Flash and NAND Flash controller
are used in an AS MSC.
Control plane—Inter-integrated circuit control plane that allows Peripheral Component
Interconnect Express (PCIe) control.
LEDs—Two LEDs display the status of the AS MSC and storage.
Online/offline button—To power on or power off the AS MSC.
Figure 12: Application Services Modular Storage Card
g006673
23Copyright © 2013, Juniper Networks, Inc.
Chapter 2: MX480 Hardware Components
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