Curtiss-Wright / VMETRO / Micro Memory MM5425/256M Battery-Backed PCI NVRAM Module

Curtiss-Wright / VMETRO / Micro Memory MM5425/256M Battery-Backed PCI NVRAM Module



This Curtiss-Wright / VMETRO / Micro Memory MM5425/256M Battery-Backed PCI NVRAM Module is new from surplus stock.

Configuration:
• Memory: 256 MB
• Interface: 64-bit / 66MHz PCI 2.2
• Transfer Rate: Up to 533 MB/s





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Stock # 73715-3
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Curtiss-Wright / VMETRO / Micro Memory MM5425CN Battery-Backed PCI NVRAM Module

Features
  • Two On-Board Redundant Lithium Ion Batteries
  • Specialized Mailbox DMA for Maximizing Read and Write Transfers
  • Error Detection and Correction
  • Supports Interrupts
  • Device Drivers for Several Operating Systems Avaliable

Description

The MM-5425CN is designed to improve response time and data reliability in server appliances.

Especially Applicable to file servers and storage appliances that adhere to the NFS protocol or utilize journaling file systems, PCI NVRAM cards can enable there products to improve performance for I/O intensive applications and still comply with the industry standard benchmark, SPEC SFS.

SPEC SFS requires following the NFS Protocol, which ensures reliability by making many operations synchronous. While this is an excellent method towards guaranteeing reliability, there is an associated performance penalty. This penalty is greatest when hard disk drive(s) are selected as the stable storage device. the MM5425CN minimizes this performance penalty by replacing disk accesses with SDRAM memory accesses; SDRAM memory accesses are usually millions of times faster than disk accesses.

Unlike NVRAM that resides on a storage controller, PCI NVRAM can be completely controlled by the host that is also controlling the file system. In addition, PCI NVRAM provides superior performance to NVRAM on external storage controllers for synchronous writes because it is effectively accessed at the system level and only limited by the significant overhead of a cable interconnect.

Several journaling file systems now provide external journal mounts, so the journal log (metadata) can easily be placed on a separate device. Due to the nature of journal updates which often involve small, frequent writes where disk performance is at its lowest, a high speed PCI NVRAM card can be used as the device for the journal log.


Product Family: MM5425CN, MM5425 CN, MM5425-CN, MM5425/256, MM5425/512, MM5425/1, MM5425/2, MM-5424 256M, MM5425/256M,


Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.


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Curtiss-Wright / VMETRO / Micro Memory MM5425CN Battery-Backed PCI NVRAM ModuleCurtiss-Wright / VMETRO / Micro Memory MM5425CN Battery-Backed PCI NVRAM Module


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