SPECsfs2008_nfs.v3 Result

ONStor Inc. : COUGAR 6720
SPECsfs2008_nfs.v3 = 42111 Ops/Sec (Overall Response Time = 1.74 msec)


4205 1.0
8421 1.3
12645 1.5
16883 1.7
21123 1.9
25550 2.0
29500 2.3
33912 2.2
38166 2.3
42111 2.5
Performance Graph

Product and Test Information

Tested By ONStor Inc.
Product Name COUGAR 6720
Hardware Available August 2008
Software Available August 2008
Date Tested March 2009
SFS License Number 2192
Licensee Locations Campbell, CA

The Cougar 6000 represents ONStor's family of scalable clustered NAS gateway systems targeted at high-end enterprise file serving environments. Cougar 6000 systems are available in two models: Cougar 6720 & Cougar 6520. These systems are based on 64-bit, multi-core network processors which feature system-on-a-chip design, with integrated i/o and hyper-transport interconnects for high data throughput at significantly lower power consumption. Each Cougar 6000 system supports up to eight 4Gb Fibre Channel and eight Gigabit Ethernet ports in a highly available configuration within a compact 2U form factor. Cougar 6000 systems are architected to scale out to multiple NAS gateways in a single cluster and deliver high performance and capacity scaling across a broad range of storage systems.

Configuration Bill of Materials

Item No Qty Type Vendor Model/Name Description
1 1 NAS Gateway ONStor Cougar 6720 18 core Cougar with 18 GB RAM
2 1 Storage System Fujitsu ETERNUS4000 Model 500 Storage array with 2 controllers, 240 drives, 8 FC 4 Gb ports
3 1 SAN Switch Brocade 4100 SAN switch with 4Gb FC ports (16 ports utilized)

Server Software

OS Name and Version Everon OS R4.0.1.0
Other Software Fujitsu V11L52
Filesystem Software StorFS

Server Tuning

Name Value Description
read ahead in filer dcache off Anticipatory reads of storage by filer

Server Tuning Notes

Atime updates were enabled (default setting).

Disks and Filesystems

Description Number of Disks Usable Size
146GB FCAL 15K RPM Disk Drives 224 8.5 TB
Total 224 8.5 TB
Number of Filesystems 32
Total Exported Capacity 8.5 TB (as tested), 29.3 TB (configurable)
Filesystem Type StorFS
Filesystem Creation Options Default
Filesystem Config Each of the 32 filesystems was striped over 7 drives utilizing RAID-0.
Fileset Size 4920.7 GB

A standard Fujitsu ETERNUS4000 model 500 storage system was utilized. Sixteen shelves of 15 Fibre Channel drives (15K RPM) each were available. Of the 240 drives, 224 were used for the file system and 4 were used for Fujitsu code and logging. In addition, Cougar maintenance and core dump files resided on the 2 of the 4 disks. Each of the 32 file systems was striped over its own set of 7 disk drives. Sixteen file systems were assigned to Controller Module 0 and the other 16 to Controller Module 1. While both Cougar blades could access both Controller Modules for failover purposes, each blade was assigned to its own Controller Module during the SPEC test. The Cougar Gateway utilized the Fujitsu storage default settings including Read Cache, Write Cache, Write Cache Mirroring, and 64 KB stripe size.

Network Configuration

Item No Network Type Number of Ports Used Notes
1 Gigabit Ethernet 8 Four GbE ports per Cougar 6720 blade. The 4 ports were aggregated into 1 logical port.

Network Configuration Notes

A Dell PowerConnect 6248 ethernet switch (48 ports, 184 Gb backplane) was utilized. The network interfaces used standard frames.

Benchmark Network

The Cougar 6720 was connected to the Dell switch via GbE connections (8 ports). The connections were organized into 2 groups of 4. Each group of 4 was aggregated at the switch and the Cougar blade. Each of the 3 clients was connected to the Dell switch with a 1 GbE connection.

Processing Elements

Item No Qty Type Description Processing Function
1 4 CPU 900 MHz Broadcom SiByte 1480 (4 cores) TCP/IP, NFS, CIFS protocol, filesystem
2 2 CPU 600 MHz Broadcom 1125 management

Processing Element Notes

Each Cougar 6720 contains two processing blades. Each blade has 2 physical processors (Broadcom SiByte 1480 - four processing cores per chip) for data path processing (TCP/IP, NFS, CIFS, filesystem) and 1 physical processor (Broadcom SiByte 1125 - one processing core per chip) for operating system management and control, four Gigabit Ethernet ports and four 4Gb/s Fibre Channel ports.


Description Size in GB Number of Instances Total GB Nonvolatile
DDR2 RAM (Cougar) 1 18 18 V
NV RAM (ETERNUS4000 disk controllers) 4 4 16 NV
Grand Total Memory Gigabytes     34  

Memory Notes

Each Cougar 6720 NAS blade has 8 GB of memory for the data path (protocol and file system operations) and 1 GB of memory for operating system management and control.

Stable Storage

Stable storage in the disk system consists of disk drives and DDR2 RAM with a backup system utilizing batteries and disk drives. In the event of power failure, the battery backed system writes cache data to system disk drives. Data is stored in stable storage before NFS stable write and commit operations are acknowledged.

System Under Test Configuration Notes

The test configuration used dedicated resources (network switch, SAN switch, storage).

Other System Notes

Standard Fujitsu storage default settings were utilized.

Test Environment Bill of Materials

Item No Qty Vendor Model/Name Description
1 3 Fujitsu PRIMERGY RX300 S3 Fujitsu load generator client
2 1 Dell PowerConnect 6248 48 port switch 48 port switch, 184 Gb backplane bandwidth

Load Generators

LG Type Name LG1
BOM Item # 1
Processor Name Intel Xeon
Processor Speed 3.0 GHz
Number of Processors (chips) 2
Number of Cores/Chip 2
Memory Size 9 GB
Operating System Red Hat REL4 2.6.9-78.ELsmp
Network Type 2 X Broadcom BCM5715 GbE

Load Generator (LG) Configuration

Benchmark Parameters

Network Attached Storage Type NFS V3
Number of Load Generators 3
Number of Processes per LG 32
Biod Max Read Setting 2
Biod Max Write Setting 2
Block Size AUTO

Testbed Configuration

LG No LG Type Network Target Filesystems Notes
1..3 1 1 vol1-vol16, vol101-vol116 None

Load Generator Configuration Notes


Uniform Access Rule Compliance

Thirty-two processes were utilized on each load generating client. The ONStor Cougar 6720 Gateway had two blades, each running 1 virtual server and 16 file systems. Each blade was configured with 1 logical interface to the clients (an aggregation of four GbE interfaces). To satisfy the uniform access rule, each client used 32 mount points, 1 for each of the 32 file systems in the Cougar 6720 Gateway. Thus each client's load was evenly distributed over the 32 file systems and the 2 network interfaces. On the storage side, each virtual server could access any of the raid groups via either of the 2 storage controllers.

Other Notes


Config Diagrams

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First published at SPEC.org on 05-May-2009