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Description
The MM-5425CN can
be integrated into storage filers, servers and
controllers that have an available PCI slot.
Memory on the PCI bus is mapped into I/O space,
which easily creates a separate and distinct
memory partition for functions such as
journaling and caching. The card has been
specifically designed to provide dramatic
improvements in applications that are I/O bound.
In particular, applications that involve file
journaling, sequential logging, or frequent disk
I/O’s such as transaction processing, file
serving, and data warehousing can benefit
significantly by implementing solid state NVRAM
on the PCI bus.
The MM-5425CN is a
half size PCI card with a 64-bit/66MHz PCI
interface and 256MB to 1GB of NVRAM. Redundant,
rechargeable lithium ion batteries are on-board
to provide data retention in the event of a
power loss. Status LED lights are software
programmable and battery status registers in the
CSR can be enabled to monitor battery voltages.
The battery circuitry and failover have been
refined over twenty-five years of product
development to ensure the utmost in data
retention and availability.
Because the
MM-5425CN resides on the PCI bus, I/O transfers
to memory are only limited by bus speeds instead
of a cable interlink which usually has
significant latency. The card’s non-volatility
features also enable data to be retrieved after
a power failure or system reset. Because the
card utilizes solid state memory, there is no
head seek time as experienced with rotating
storage media. This, combined with the card’s
data retention capabilities, make the MM-5425CN
the ideal solution for journaling and caching.
MM-5425CN Product
Specification Sheet (PDF file format)
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