Quantum 6-01376-05 Manuale Utente

Quantum

StorNext File System Tuning Guide

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Contents

StorNext File System Tuning

1

The Underlying Storage System ...................................................................... 1

RAID Cache Configuration....................................................................... 2

RAID Write-Back Caching ........................................................................ 2

RAID Read-Ahead Caching ...................................................................... 3

RAID Level, Segment Size, and Stripe Size ............................................ 4

File Size Mix and Application I/O Characteristics....................................... 5

Direct Memory Access (DMA) I/O Transfer.......................................... 5

The Metadata Network..................................................................................... 7

The Metadata Controller System..................................................................... 7

FSM Configuration File Settings .............................................................. 8

Mount Command Options...................................................................... 16

The Distributed LAN (Disk Proxy) Networks............................................. 18

Network Configuration and Topology ................................................. 20

Distributed LAN Servers ................................................................................ 22

Windows Memory Requirements ................................................................. 22

Sample FSM Configuration File..................................................................... 25