SPECsfs2008_nfs.v3 Result

EMC Corporation : Celerra Gateway NS-G8 Server Failover Cluster, 3 Datamovers (1 stdby) / Symmetrix V-Max
SPECsfs2008_nfs.v3 = 110621 Ops/Sec (Overall Response Time = 2.32 msec)


Performance

Throughput
(ops/sec)
Response
(msec)
11030 0.7
22073 0.8
33151 1.1
44193 1.3
55264 2.2
66540 2.4
77592 2.9
88317 3.4
99560 4.7
110621 7.3
Performance Graph


Product and Test Information

Tested By EMC Corporation
Product Name Celerra Gateway NS-G8 Server Failover Cluster, 3 Datamovers (1 stdby) / Symmetrix V-Max
Hardware Available December 2009
Software Available December 2009
Date Tested December 2009
SFS License Number 47
Licensee Locations Hopkinton, MA

The NS-G8 Gateway Server system is a consolidation of file-based servers with NAS(NFS, CIFS) applications configured in an 2+1 High-Availability cluster. The servers deliver network services over high-speed Gigabit Ethernet. The cluster tested here consists of two active datamovers that each provides 4 Jumbo-frame capable Gigabit Ethernet interfaces and one stand-by datamover to provide high availability. The NS-G8 is a gateway to Shared Storage Array Symmetrix V-Max. The Symmetrix V-Max is a new storage architecture using 4 V-Max engines interconnected via a set of multiple active 4 Gbit/s FC HBAs connecting to the fabric.

Configuration Bill of Materials

Item No Qty Type Vendor Model/Name Description
1 1 Enclosure EMC NSG8-DME0 Celerra NS-G8 empty datamover add on enclosure
2 1 Enclosure EMC NSG8-DME1 Celerra NS-G8 empty datamover add on enclosure
3 3 Datamover EMC NSG8-DM-8A Celerra NS-G8 datamover, 4 GbE ports, 4 FC ports
4 1 Control station EMC NSG8-CSB Celerra NS-G8 control station (Administration only)
5 3 Software EMC NSG8-UNIX-L Celerra NS-G8 UNIX License
6 1 Intelligent Storage Array Engine EMC SB-64-BASE Symmetrix V-Max Base Engine, 64 GB Cache
7 3 Intelligent Storage Array Engine EMC SB-ADD64NDE Symmetrix V-Max Add Engine, 64 GB Cache
8 16 FE IO Module EMC SB-FE80000 Symmetrix V-Max Front End IO Module with multimode SFP's
9 16 Drive Enclosure EMC SB-DE15-DIR V-Max Direct Connect Storage Bay, Drive Enclosure
10 96 Flash Disk STEC NF4F14001B V-Max Enterprise Flash Drive (EFD) 400 GB 4 Gbit/s FC optical
11 4 FC Disk SEAGATE NS4154501B V-Max Cheetah 450 GB 15K.6 4 Gbit/s FC Disks
12 4 Standby Power Supply EMC SB-DB-SPS V-Max Standby Power Supply
13 1 FC Switch EMC EMC DS-300B 24 port Fibre Channel Switch

Server Software

OS Name and Version DART 5.6.46.4
Other Software EMC Celerra Control Station Linux 2.6.9-67.0.4.5611
Filesystem Software Celerra UxFS File System

Server Tuning

Name Value Description
ufs syncInterval 22500 Timeout between UFS log flushes
file asyncThresholdPercentage 30 Total cached dirty blocks for NFSv3 async writes
ufs cgHighWaterMark 131071 Defines the systems CG cache size
ufs inoBlkHashSize 170669 Inode block hash size
ufs updateAccTime 0 Disable access time updates
ufs nFlushDir 80 Number of UxFS directory and indirect blocks flush threads
file prefetch 0 Disable DART read pre-fetch
ufs inoHighWaterMark 65536 Number of dirty inode buffers per filesystem
nfs thrdToStream 7 Number of NFS flush threads per stream
ufs inoHashTableSize 2005027 Inode hash table size
mkfsArgs dirType DIR_COMPAT Compatibility mode directory style
kernel maxStrToBeProc 24 Number of network streams to process at once
ufs nFlushIno 128 Number of UxFS inode blocks flush threads
kernel outerLoop 16 Number of consecutive iterations of network packets processing
ufs nFlushCyl 40 Number of UxFS cylynder group blocks flush threads
nfs withoutCollector 1 Enable NFS-to-CPU thread affinity
kernel buffersWatermarkPercentage 5 Flushing buffer cache threshold
file initialize nodes 1000000 Number of inodes
file initialize dnlc 3676000 Number of dynamic name cache lookup entries
nfs start openfiles 1200000 Number of open files
nfs start nfsd 4 Number of NFS daemons

Server Tuning Notes


Disks and Filesystems

Description Number of Disks Usable Size
This set of 96 EFD disks is divided into 48 2-disk RAID1 pairs, each with 4 LUs per drive, exported as 192 logical volumes. All data file systems reside on these disks. 96 18.8 TB
This set of FC disks consists of 2 2-disk RAID1 pairs, each with 2 LUs per drive, exported as 8 logical volumes. These disks are reserved for Celerra system use 4 900.0 GB
Total 100 19.6 TB
Number of Filesystems 8
Total Exported Capacity 17600 GB
Filesystem Type UxFS
Filesystem Creation Options Default
Filesystem Config Each filesystem is striped (32 KB elementsize), across 48 disks (192 logical volumes) for fs1 fs2 fs3 fs4 fs5 fs6 fs7 and fs8
Fileset Size 12889.8 GB

The stripe size for all RAID1 logical volumes was 32 KB. Each logical volume was 100 GB. The filesystem named fs1 was built on a Celerra meta volume made by striping across 24 logical volumes on the first V-Max Engine. The filesystem named fs2 was built on a Celerra meta volume made by striping across 24 logical volumes on same V-Max Engine. fs3 and fs4 were configured similar on the second V-Max Engine. Same with fs5 and fs6 on 3rd V-Max Engine and fs7 and fs8 on the last V-Max Engine.

Network Configuration

Item No Network Type Number of Ports Used Notes
1 Jumbo Gigabit Ethernet 8 This is the Gigabit network interface used for both datamovers.

Network Configuration Notes

All Gigabit network interfaces were connected to a Cisco 6509 switch.

Benchmark Network

An MTU size of 9000 was set for all connections to the switch. Each datamover was connected to the network via 4 ports. The LG1 class workload machines were connected with one port.

Processing Elements

Item No Qty Type Description Processing Function
1 4 CPU Dual Intel Quad-core 2.3 GHz Xeon E5345 8 MB L2 cache for each datamover server. 4 chips active for the workload. (2 standby not in the quantity) NFS protocol, UxFS filesystem

Processing Element Notes

Each datamover has two physical processors.

Memory

Description Size in GB Number of Instances Total GB Nonvolatile
Each datamover main memory. (4 GB in the standby datamover not in the quantity) 4 2 8 V
V-Max storage array battery backed global memory. (64 GB per V-Max engine) 64 4 256 NV
Grand Total Memory Gigabytes     264  

Memory Notes

The Symmetrix V-Max was configured with a total of 256 GB of memory. The memory is backed up with sufficient battery power to safely destage all the cached data onto the disk in the event of a power failure.

Stable Storage

8 NFS file systems were used. Each RAID1 pair had 4 LUs bound on it. Each file system was striped over a quarter of the logical volumes. The storage array had 8 Fibre Channel connections, 4 per datamover. In this configuration, NFS stable write and commit operations are not acknowledged until after the storage array has acknowledged that the related data has been stored in stable storage (i.e. NVRAM or disk).

System Under Test Configuration Notes

The system under test consisted of 2 NS-G8 Gateway datamovers attached to a Symmetrix V-Max Storage Array with 4 FC links. The datamovers were running DART 5.6.46.4. 4 GbE Ethernet ports per datamover were connected to the network.

Other System Notes

Failover is supported by an additional Celerra datamover that operates in stand-by mode. In the event of the datamover failure, this unit takes over the function of the failed unit. The stand-by datamover does not contribute to the performance of the system and it is not included in the components listed above.

Test Environment Bill of Materials

Item No Qty Vendor Model/Name Description
1 24 Dell Dell PowerEdge 1850 Dell server with 1 GB RAM and the Linux 2.6.9-42.ELsmp operating system

Load Generators

LG Type Name LG1
BOM Item # 1
Processor Name Intel(R) Xeon(TM) CPU 3.60GHz
Processor Speed 3.6 GHz
Number of Processors (chips) 2
Number of Cores/Chip 2
Memory Size 1 GB
Operating System Linux 2.6.9-42.ELsmp
Network Type 1 x Broadcom BCM5704 NetXtreme Gigabit Ethernet

Load Generator (LG) Configuration

Benchmark Parameters

Network Attached Storage Type NFS V3
Number of Load Generators 24
Number of Processes per LG 32
Biod Max Read Setting 5
Biod Max Write Setting 5
Block Size AUTO

Testbed Configuration

LG No LG Type Network Target Filesystems Notes
1..24 LG1 1 /fs1,/fs2,/fs3.../fs7,/fs8 N/A

Load Generator Configuration Notes

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

Uniform Access Rule Compliance

Each client has the same file systems mounted from each of the two active datmovers.

Other Notes

Failover is supported by an additional Celerra datamover that operates in stand-by mode. In the event of the datamover failure, this unit takes over the function of the failed unit. The stand-by datamover does not contribute to the performance of the system and it is not included in the components listed above.

Symmetrix V-Max was configured with 256 GB of memory, 64 GB per V-Max engine. The memory is backed up with sufficient battery power to safely destage all the cached data onto the disk in the event of a power failure.

Config Diagrams


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First published at SPEC.org on 27-Jan-2010