Datasheet

13
OL-17436-01
Product Overview
Table 4 PRP-3 Memory Components
SDRAM
SDRAM stores routing tables, protocols, and network accounting applications, and runs the Cisco IOS
software. The default PRP-2 configuration includes 1 GB of ECC SDRAM. DIMM upgrades of 1 GB
and 2 GB are available for the PRP-2. You can mix memory sizes as long as the larger DIMM is placed
in bank 1 (U15).
The PRP-3 provides more system memory than PRP-1 and PRP-2. PRP-3 is shipped with 2 GB system
memory in each DDR2 DRAMs for a total of 4 GB and provides an upgrade option for a total of 8 GB
(4 GB x 2 DRAM).
Caution Only Cisco-approved memory is supported. Do not attempt to install other devices or DIMMs in the
DIMM sockets not approved by Cisco. (See Table 26 on page 79.)
Type Size Quantity Description Location
SDRAM
1
1. Default SDRAM configuration is a total of 4 GB (2 x 2GB) system memory for PRP-3. Bank 1 (U15) must be populated first.
You can use one or both banks to configure DDR2 DRAM combinations of 2 GB or 4 GB for the PRP-3. DIMM devices that
are not from Cisco are not supported.
2 GB (Default) for each
DDR2 DRAM for a total
system memory of 4 GB,
option for upgrade to total
system memory of 8 GB (4
GB each).
2 Two 2-GB default DDR2
DRAM for main CiscoIOSXR
software functions. Provision
for optional upgrade to 4 GB
also possible to provide total
system memory of 8 GB.
U8 (bank
1)
2
U10 (bank
2)
2. If both banks of the PRP-3 are populated, bank 1 and bank 2 must contain the same size DIMM.
NVRAM
3
3. NVRAM is not user configurable or field replaceable.
2 MB (fixed) 1 System configuration files,
register settings, and logs
—
Flash memory 2 GB (default) or 4 GB
(optional) Flash disks
4
4. ATA Flash disks are supported in the PRP-3.
2
(Internal
and
External
Compact
Flash)
Contains Cisco IOS XR
software images, system
configuration files, and other
user-defined files on two
CompactFlash.
Internal and
External
Compact
Flash
5
5. PRP-3 provides an onboard internal CompactFlash and also an external CompactFlash. The external CompactFlash in PRP-3
replaces the two PCMCIA slots (slot0 and slot1) of PRP-2.
Flash boot
ROM
8 MB 1 Flash EPROM for the ROM
monitor program boot image
—
HDD
6
6. Hard disk drives that are not from Cisco are not supported.
80 GB SATA 1 Contains log and crash
information for specific
Cisco IOS XR versions
—