Marvell Write Acceleration Module (WAM)
Marvell Write Acceleration Module (WAM)
Marvell Write Acceleration Module (WAM)
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<strong>Marvell</strong> <strong>Write</strong> <strong>Acceleration</strong> <strong>Module</strong> (<strong>WAM</strong>)<br />
Industry-leading NVRAM Performance and Resiliency<br />
FEATURE HIGHLIGHTS<br />
• Large 8GB DRAM write cache<br />
• Automatic Flash SSD backup in case of power failure<br />
• Zero-maintenance, no batteries required<br />
• Enhanced data protection persistent SSD Storage,<br />
rather than limited service window of 72-hours with<br />
battery based solutions<br />
• Optimized packaging using onboard super-capacitor<br />
instead of bulky batteries<br />
• Power-efficient ASIC design minimizes power and<br />
cooling costs<br />
• Scalable performance – simply add more cards for<br />
larger write cache capacity<br />
PRODUCT OVERVIEW<br />
The <strong>Marvell</strong> ® <strong>Write</strong> <strong>Acceleration</strong> <strong>Module</strong> (<strong>WAM</strong>) provides a high-performance Non-Volatile Random Access Memory<br />
(NVRAM) write cache solution for Input/Output Operations Per Second (IOPS) intensive applications. It uniquely<br />
integrates 8GB DRAM and 32GB Single-Level Cell (SLC) NAND Flash to create a large capacity, highly resilient<br />
NVRAM card. Example applications include storage file systems, de-duplication and encryption, Online Transaction<br />
Processing (OLTP) database, data warehousing (indexes, temp tables, logs) and high-performance web servers.<br />
Unlike other NVRAM solutions that require batteries, the <strong>Marvell</strong> <strong>WAM</strong> leverages patent-pending intelligent<br />
firmware and a zero maintenance super-capacitor to automatically back up DRAM to SLC NAND Flash in the event<br />
of power loss. This super-capacitor based design has several benefits including zero maintenance (avoids annual<br />
battery replacements), data loss protection (avoids limited 72-hour battery life), and space optimization (avoids<br />
bulky batteries that cannot physically fit inside a storage or server chassis). The <strong>WAM</strong> also uniquely offers a large<br />
capacity 8GB DDR2 write cache and market-leading performance for maximum IOPS and throughput at the lowest<br />
possible latencies.<br />
Powered by <strong>Marvell</strong>’s industry-leading power-efficient ASICs, the 88RC8180 Storage System-on-Chip (SoC) and<br />
88SS8014 SSD controller. the <strong>Marvell</strong> <strong>WAM</strong> offers a turnkey solution including out-of-the-box ready <strong>WAM</strong> PCIe<br />
HBA, embedded firmware, host OS drivers, technical documentation, diagnostic utilities and a complete software<br />
development kit (SDK) including programming specifications and open-source Linux driver.<br />
NAND Flash<br />
<strong>Marvell</strong><br />
88SS8014<br />
DRAM (on back)<br />
<strong>Marvell</strong><br />
88RC8180<br />
PCIe to Host<br />
Supercapacitor<br />
Fig 2. <strong>WAM</strong> Functional Diagram<br />
Fig 1. <strong>Marvell</strong> <strong>Write</strong> <strong>Acceleration</strong> <strong>Module</strong><br />
Fig 3. <strong>WAM</strong> Mechanical Diagram
<strong>Marvell</strong> <strong>Write</strong> <strong>Acceleration</strong> <strong>Module</strong> (<strong>WAM</strong>)<br />
TECHNICAL SPECIFICATIONS<br />
• Part Number • CA22644LH<br />
• Bus Interface • PCIe 1.1 x 4 (x8 and x16 slot compatible)<br />
• Random I/O • 4K Block <strong>Write</strong>s: 165,000 IOPS<br />
• Sequential<br />
Throughput<br />
• 4K Block Reads: 185,000 IOPS<br />
• 256K Block <strong>Write</strong>s: 800 MB/sec<br />
• 256K Block Reads: 820 MB/sec<br />
• Access Latency • Single I/O request:
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