Quantum 3.1.4.1 manual Distributed LAN Servers

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StorNext File System Tuning

Distributed LAN Servers

maximum of 1 GByte/s of throughput. SNFS automatically load- balances among NICs and servers to maximize throughput for all clients.

Note: The diagram shows separate physical switches used for the two subnetworks. They can, in fact, be the same switch, provided it has sufficient internal bandwidth to handle the aggregate traffic.

Distributed LAN Servers

Distributed LAN Servers must have sufficient memory. When a Distributed LAN Server does not have sufficient memory, its performance in servicing Distributed LAN I/O requests might suffer. In some cases (particularly on Windows,) it might hang.

Refer to the StorNext Release Notes for this release’s memory requirements.

Distributed LAN Servers must also have sufficient bus bandwidth. As discussed above, a Distributed LAN Server must have sufficient bus bandwidth to operate the NICs used for Distributed LAN I/O at full speed, while at the same time operating their Fibre Channel HBAs. Thus, Quantum strong recommends using PCI Express for Distributed LAN Servers.

Distributed LAN Client Vs. Legacy Network Attached Storage

StorNext provides support for legacy Network Attached Storage (NAS) protocols, including Network File System (NFS) and Common Internet File System (CIFS).

However, using Distributed LAN Client (DLC) for NAS connectivity provides several compelling advantages in the following areas:

StorNext File System Tuning Guide

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Contents StorNext Copyright Statement Contents Contents Underlying Storage System StorNext File System TuningRAID Cache Configuration RAID Write-BackCaching RAID Read-Ahead RAID Level, Segment Size, and Stripe Size File Size Mix and Application I/O Characteristics NFS / Cifs Buffer CacheMetadata Network Snfs and Virus CheckingMetadata Controller System Stripe Groups FSM Configuration File SettingsAffinities StripeBreadth BufferCacheSize InodeCacheSizeThreadPoolSize FsBlockSize ForcestripeAlignmentFsBlockSize JournalSize JournalSizeSnfs Tools StorNext File System Tuning Metadata Controller System StorNext File System Tuning Metadata Controller System Latency-testindex-number seconds Mount Command Options Distributed LAN Disk Proxy Networks Snfs External APIHardware StorNext File System Tuning Guide Switch Network Configuration and TopologyDistributed LAN Client Vs. Legacy Network Attached Storage Distributed LAN ServersFault tolerance PerformanceLoad Balancing Client Scalability Robustness and Stability Consistent Security Model Windows Memory RequirementsStorNext File System Tuning Windows Memory Requirements Sample FSM Configuration File StorNext File System Tuning Sample FSM Configuration File StorNext File System Tuning Sample FSM Configuration File StorNext File System Tuning Sample FSM Configuration File StorNext File System Tuning Sample FSM Configuration File StorNext File System Tuning Sample FSM Configuration File