[san-tech][03026] Marvell DragonFly Virtual Storage Accelerator (VSA)発表、 Apr 4, 2011

Date: Tue, 05 Apr 2011 22:55:26 +0900
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Marvell社から PCIeベースのストレージ仮想化アクセラレータボードが発表
されました：

"Marvell's New DragonFly Virtual Storage Accelerator Introduces
 Breakthrough Host Cache Architecture for Enterprise Storage"
 Apr 4, 2011
  http://www.marvell.com/company/news/press_detail.html?releaseID=1474



DragonFly Virtual Storage Accelerator
  http://www.marvell.com/dragonfly
  http://www.marvell.com/dragonfly/Marvell_DragonFly_VSA001_product_brief_final.pdf

"Breaking Through The Storage I/O Barrier For Cloud Computing"
 SOLUTIONS WHITE PAPER
 Shawn Kung,  Director of Product Marketing, April 2011
  http://www.marvell.com/dragonfly/Marvell_DragonFly_Solutions001_white_paper_final_r3_new.pdf

"Introducing DragonFly. Breaking the I/O Barrier."
 2011/04/03
  http://www.youtube.com/watch?v=m2mJtWb0Zqc

ボード上に L1 Cache: NVRAM (1GB to 8GB DDR3 DRAM (with full ECC protection)
with ultracapacitor-based backup to 32GB SLC NAND flash) を搭載、ボード
から L2: SATA/SAS SSD (3Gb/s, 6Gb/s) を接続する多段キャッシュ構成で、
外部ストレージを仮想化するものです (外部へのアクセスを極力低減させる)。

キャッシュアルゴリズムは独自の Marvell HyperScale
  http://www.marvell.com/dragonfly/hyperscale.html
ですが、
  "Completely independent of host server resources, HyperScale requires
   only a very thin kernel driver. All major operating systems and
   hypervisors are supported, for quick and easy porting of new releases
   and patches."

です。対象プロトコル：
Flexible across files or blocks (NFS, iSCSI, FCP, FCoE, local SAS/SATA, etc)
Works with either networked storage (NAS/SAN) or direct-attached storage (DAS)

関連記事
"Marvell builds gateway to the clouds", 4th April 2011
  http://www.theregister.co.uk/2011/04/04/marvell_dragonfly/
  http://www.theregister.co.uk/2011/04/04/marvell_dragonfly/page2.html

  "Beta testing will start in the third quarter and general availability
   should commence by year-end. A DragonFly should cost about the same as
   a high-end host bus adaptor."
とのことです。

"Marvell Tackles The I/O Problem", April 4, 2011
  http://www.networkcomputing.com/data-networking-management/marvell-tackles-the-io-problem.php
  http://www.networkcomputing.com/data-networking-management/marvell-tackles-the-io-problem.php?p=2