Cisco Systems 7401ASR Product Description, Memory Size Product Number, 64 MB, MEM-COMP-FLD64M=

Appendix C Using the CompactFlash Disk

Product Description

Product Description

CompactFlash Disks are designed with Flash technology, a nonvolatile storage solution that does not require a battery to retain data indefinitely. CompactFlash Disks provide complete PCMCIA-ATA functionality and compatibility as defined by the CompactFlash Association in their CF+ and CompactFlash Specification, revision 1.4.

The CompactFlash Disk is more flexible than linear Flash memory because the CompactFlash Disk has controller circuitry that allows it to emulate a hard disk and automatically maps out bad blocks and performs automatic block erasure. Further, the CompactFlash Disk provides the capability to allocate noncontiguous sectors, which eliminates the need for the squeeze command (previously required with linear Flash memory cards).

The CompactFlash Disk provides increased Flash-based memory space—64 MB to 128 MB—for storage of system configuration files, Cisco IOS software images, and other types of system-related files. Table C-1provides memory information for the CompactFlash Disk.

Table C-1 CompactFlash Disk Memory Options

Memory Size	Product Number
64 MB	MEM-COMP-FLD64M=
128 MB	MEM-COMP-FLD128M=

Note The CompactFlash Disk is only supported on systems with the Cisco IOS File System feature, and the Cisco IOS File System feature is supported in Cisco IOS Release 12.0(1) or later releases of 12.0. In general, CompactFlash Disk functionality requires Cisco IOS Release 12.0(2) or a later release of 12.0.

The Cisco IOS File System feature provides a single interface to all file systems your system uses:

•Flash memory file systems—CompactFlash Disks and onboard Flash memory

•Network file systems—File Transfer Protocol (FTP), Remote Copy Protocol (rcp), and TFTP

•Any other endpoint for reading or writing data—NVRAM, the running configuration, ROM, raw system memory, system bundled microcode, Xmodem, Flash load helper log, modems, and BRI MUX interfaces

Note A complete discussion of the Cisco IOS File System feature is beyond the scope of this publication. For information about this feature, refer to the Cisco IOS Configuration Fundamentals Configuration Guide and Cisco IOS Configuration Fundamentals Command Reference publications for Cisco IOS Release 12.x. These publications are available on Cisco.com. (For information on how to access Cisco.com, see the “Cisco.com” section on page xvii.)

Cisco 7401ASR Installation and Configuration Guide

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