Datasheet
9
Using the Flash Disk
OL-6452-04
Product Description
Product Description
Flash Disks are Flash memory-based devices that conform to the PC Card (formerly PCMCIA) standard
and present an ATA (AT Attachment) interface to the system. This interface complies with the ANSI ATA
Interface Document X3T13.1153 D Rev. 9 specification.
The Flash Disk is more flexible than linear Flash memory because the Flash 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 Flash Disk provides the capability to allocate noncontiguous sectors, which
eliminates the need for the squeeze command (previously required with linear Flash memory cards).
The Flash Disk provides increased Flash-based memory space—48 to 128 MB—for storage of system
configuration files, Cisco IOS software images, and other types of system-related files. Table 3 provides
memory information for the Flash Disk and Table 4 provides memory information for the CompactFlash
Disk.
Note The Flash 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, Flash
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—Flash Disks, onboard Flash memory, linear Flash memory cards
Table 3 Flash Disk Memory Options
Memory Size Product Number
48 MB MEM-7100-FLD48M, MEM-RSP8-FLD48M,
MEM-RSP16-FLD48
1
1. These products are also available as Flash Disk upgrades. To order an upgrade, add an equal sign
(=) after the Product Number, for example, MEM-I/O-FLD128M=.
64 MB MEM-I/O-FLD64M, MEM-RSP8-FLD64M,
MEM-RSP16-FLD64M
128 MB MEM-I/O-FLD128M, MEM-7100-FLD128M,
MEM-RSP8-FLD128M,
MEM-RSP16-FLD128M
1
Table 4 CompactFlash Disk Memory Options
Memory Size Product Number
64 MB MEM-COMP-FLD64M=
64 MB MEM-NPE-G1-FLD64=
128 MB MEM-COMP-FLD128M=
128 MB MEM-NPE-G1-FLD128=
256 MB MEM-NPE-G1-FLD256=
256 MB MEM-NPE-G2-FLD256=
256 MB MEM-7201-FLD256=