SPECsfs2008_nfs.v3 Result

Throughput (ops/sec) Response (msec) 3996 0.9 7998 1.0 12013 1.1 16023 1.7 20033 2.3 24078 2.7 28090 3.1 32119 3.5 36160 4.1 40191 4.8 43979 6.3 44728 7.1

Tested By	NEC Corporation
Product Name	NV7500, 2 node active/active cluster
Hardware Available	January 2010
Software Available	January 2010
Date Tested	January 2010
SFS License Number	9006
Licensee Locations	Tokyo,Japan

NV7500 is a high-end 2node active/active cluster model of NEC Storage NV series. The NEC Storage NV series is a Network Attached Storage (NAS) product that connects to a network and enables file access via the network. It supports file access protocols, which enables files located in different operating systems to be shared. Centralized control of data maintenance or other processing is also possible by storing shared data together.

Item No	Qty	Type	Vendor	Model/Name	Description
1	1	Server	NEC	NF7675-SR20	NV7500 2node Cluster NAS server including 1 Disk Array Controller and 3 SAS Disk
2	2	NIC	NEC	NF7609-SN012	NV7500 2port Network Interface card(Copper)
3	2	NIC	NEC	NF7609-SN122	NV7500 Additional 2port Network Interface card(Copper)
4	1	NVRAM	NEC	NF7606-SV01	NV7500 NVRAM option(2 cards, 1 per node)
5	2	Memory	NEC	NF7606-SC011	NV7500 Additional Main Memory(4GB)
6	5	Disk Array Controller	NEC	NF7607-SA01	NV7500 Additional Disk Array Controller(It can include up to 12 disks.)
7	18	Enclosure	NEC	NF7609-SE60	NV7500 SAS/SATA Disk Enclosure(It can include up to 12 disks.)
8	284	SAS Disk	NEC	NF7609-SM625	SAS 300GB 15K RPM disk drive
9	2	FC Switch	NEC	NF9330-SS014	WB 330 4Gbps Fibre Channel Switch(16port)
10	1	Software License	NEC	UFS600-HC75002	BaseProduct SC-LX6 - NV7500(5TB)
11	1	Software License	NEC	UFS600-HZ750A3	BaseProduct SC-LX6 - NV7500(additional 10TB)
12	1	Software License	NEC	UFS602-HC75000	NFS Option - NV7500

OS Name and Version	SC-LX V6.2
Other Software	N/A
Filesystem Software	SC-LX V6.2

Name	Value	Description
[Manage] - [Volume] - 'Update access time(atime)'	disable	Do not update access time.
[Manage] - [NFS] - [Exports] - 'Check subtree(subtree_check)'	disable	Do not perform subtree check.
[Manage] - [NFS] - [Exports] - 'Squashed Users'	no_root_squash	Specifies a user to be converted into an Anonymous user. Do not convert user IDs.

Server Tuning Notes

All the other options were left unchanged from their default values.

Description	Number of Disks	Usable Size
SAS 147GB 15K RPM Disk Drives	3	133.1 GB
SAS 300GB 15K RPM Disk Drives	284	6.1 TB
Total	287	6.2 TB

Number of Filesystems	24
Total Exported Capacity	6226.5GB
Filesystem Type	SXFS
Filesystem Creation Options	4-GB Journal size,noatime,quota disable
Filesystem Config	N/A
Fileset Size	5616.9 GB

12 filesystems were created and used per node. One of 24 filesystems consisted of 8 disks which were divided into two 4-disk RAID 1+0 pools, and each of the other 23 filesystems consisted of 12 disks which were divided into two 6-disk RAID 1+0 pools. There were 6 Disk Array Controllers. One Disk Array Controller controlled 47 disks, and each one of the other 5 controlled 48 disks. Three 147 GB disk drives are included in the enclosure attached to the Disk Array Controller which is part of the product NF7675-SR20. They are solely used to constitute several filesystems for the operating system. Two of the three are used to form a RAID1 pair on which the operating system file systems are created, and the other is kept as a "hot" spare disk.

Item No	Network Type	Number of Ports Used	Notes
1	Jumbo Gigabit Ethernet(Copper)	8	Jumbo Frame,balance-alb

Network Configuration Notes

The number of ports was 4 per node. Bonding(balance-alb) was applied to the 4 ports on each node. All Gigabit network interfaces were connected to a Cisco Catalyst4948 switch.

The MTU size of 9000 was set for all connections to the switch. Each LG was connected to the network via a single 1 Gigabit Ethernet port.

Item No	Qty	Type	Description	Processing Function
1	2	CPU	Intel Xeon 5450, 3.0GHz, 4 cores, 1 chip, 4 cores/chip, Primary Cache 32KB(I)+32KB(D)on chip, Secondary Cache 12MB I+D on chip per chip, 6 MB shared/ 2 cores	Networking,NFS protocol,SXFS filesystem

Processing Element Notes

Each node has 1 physical processor.

Description	Size in GB	Number of Instances	Total GB	Nonvolatile
Main memory	12	2	24	V
NVRAM	0.5	2	1	NV
Disk Array Controller Memory	4	6	24	NV
Grand Total Memory Gigabytes			49

Memory Notes

NVRAM Type is DIMM on PCI express cards, and that has 3-day battery.

[Cluster configuration]: SUT has two controllers called "nodes". Both of the two nodes can be used for service forming an active/active cluster, or it is possible to let one node provide service and the other wait as a backup node forming an active/stand-by cluster. The nodes periodically communicate with each other forming a cluster "heart beat" via the following paths: 1) special direct LAN connection between the nodes, 2) LAN ports used for GUI/command operation by administrators, 3) Disks, and 4) serial(RS232-C) direct connection. Basically, each node is continuously sending some type of signal depending on the media. For example, in 3), one node is writing certain data to a disk, while the other is reading it. When a hardware or software failure occurs in one node, the other immediately detects it because expected communication from the other is missing. In that case, the surviving node takes over the original node's service. Before doing so, however, the surviving node makes sure that the other is really down, by explicitly ordering the other to shut-down. This is done via 1), 2) and via direct connection to the other node's BMC, in this order. [Battery-backed NVRAM]: Data is backed up in the battery-backed NVRAM in order not to lose data when failures occur, including power failures. Incoming data is written to NVRAM if there is space in it, or to the disk area. NVRAM is mirrored to both nodes, via Infiniband. It is only after data has been written to both node's NVRAM, or data has been written to the disk of the node servicing the data, that a success status is returned to the client. NVRAM is backed up by a 3-day battery implemented in NV7500. [Hardware redundancy]: Apart from cluster redundancy in cluster models such as SUT, all major hardware components, including power-input units and fans, have redundancy in the NV series.

Measurement was conducted in an independent network( in terms of both Ethernet and Fibre Channel).

N/A

Item No	Qty	Vendor	Model/Name	Description
1	12	NEC	Express5800/120Rh-1	Workstation with 2GB RAM and Linux operating system(RHEL5.2)
2	1	Cisco	Catalyst 4948-10GE	Cisco Catalyst 4948-10GE Ethernet Switch

LG Type Name	LG1
BOM Item #	1
Processor Name	Intel Xeon E5205
Processor Speed	1.86GHz
Number of Processors (chips)	1
Number of Cores/Chip	2
Memory Size	2 GB
Operating System	Linux 2.6.18-92.el5(RHEL5.2)
Network Type	Intel 80003ES2LAN Onboard Gigabit Ethernet(Copper) X 1

Benchmark Parameters

Network Attached Storage Type	NFS V3
Number of Load Generators	12
Number of Processes per LG	24
Biod Max Read Setting	2
Biod Max Write Setting	2
Block Size	AUTO

Testbed Configuration

LG No	LG Type	Network	Target Filesystems	Notes
1..12	LG1	N1	F1,F2,...,F24	N/A

Load Generator Configuration Notes

All filesystems were mounted on all clients, which were connected to the same physical and logical network.

Filesets were uniformly distributed over 24 filesystems. Load was uniformly distributed over network ports using the balance-alb feature.

N/A

• Config Diagram