SPECsfs2008_nfs.v3 Result

Throughput (ops/sec) Response (msec) 14048 0.3 28293 0.3 42526 0.3 61538 0.3 77152 0.3 89894 0.3 102382 0.4 115814 0.4 129880 0.5 141261 0.6

Tested By	Arkologic Corporation
Product Name	SMA 8100
Hardware Available	May 2014
Software Available	May 2014
Date Tested	April 2014
SFS License Number	4242
Licensee Locations	Fremont, CA USA

The Arkologic SMA 8100 Silicon Memory Array is a next generation, all-flash, solid-state storage appliance specifically designed to support the requirements of high performance Network Attached Storage (NAS) environments. The SMA 8100 runs Arkologic's UnityOS™ storage operating system, incorporating a unique combination of patent-pending flash I/O technologies that provide outstanding value and efficiency for enterprises looking to lower their IT budgets and increase business productivity.

Item No	Qty	Type	Vendor	Model/Name	Description
1	1	Storage Controller	Arkologic	SMA 8100	Arkologic SMA 8100 Controller
2	2	10 Gigabit Ethernet Adapter	Chelsio	T520-CR	Dual Port 10Gb Ethernet Adapter
3	3	Arkologic Silicon Memory Shelves	Arkologic	Arkologic Silicon Memory Shelves with 24 SAS-2 Enterprise Flash Drives	Arkologic Silicon Memory Shelves with 24x400GB Enterprise Flash Drives

OS Name and Version	UnityOS 2.2.0
Other Software	None
Filesystem Software	ZFS

Name	Value	Description
atime	off	Disable atime updates (all file systems)

Server Tuning Notes

N/A

Description	Number of Disks	Usable Size
400GB SAS Enterprise Flash Drives	72	22.8 TB
Total	72	22.8 TB

Number of Filesystems	9
Total Exported Capacity	18.9 TB
Filesystem Type	ZFS
Filesystem Creation Options	Default
Filesystem Config	9 ZFS file systems
Fileset Size	16406.4 GB

The storage configuration consisted of 3 Arkologic Silicon Memory Shelves, each containing 24 400GB Enterprise Flash Drives. Each shelf was connected to the SMA 8100 storage controller using dedicated 6Gbps SAS connections. A storage pool was configured on each shelf using 21 Enterprise Flash Drives, and each storage pool was configured to contain 3 filesystems. In total, there were 3 storage pools exporting 9 file systems in the configuration. Amongst the flash drives resident in the Silicon Memory Shelves, 6 drives, 2 from each shelf, were configured as high performance logging devices. These devices are overprovisioned to 25GB to maximize performance and endurance. In addition, 3 Enterprise Flash Drives, 1 from each shelf, were configured as global hot spare devices among all the pools. There were also 2 additional flash drives located in the SMA 8100 controller itself. These drives are mirrored and act as the boot device for the system.

The flash drives used by Arkologic each contain a chip-level parity protection mechanism that enables them to continue normal operation even in the event of a flash chip failure. In addition to chip-level RAID, the SMA 8100 is configured with a second level of parity protection that allows the system to survive the failure of an entire flash device within the system. The 63 enterprise flash drives in the system were configured into nine 6+1 RAID sets.

Item No	Network Type	Number of Ports Used	Notes
1	10 Gigabit Ethernet	4	Each controller has 2 Dual port 10 Gigabit Ethernet Cards using 4 ports on each and using Jumbo Frames

Network Configuration Notes

The network configuration consisted of two, dual-ported 10 gigabit ethernet network adaptors. The four network ports are aggregated using LACP (802.3ad). The MTU size is set to 9000. The load generators were each connected to the network via a single 10GbE connection.

Each load generator was connected to the Dell PowerConnect 8024F 24-port 10GbE switch via a single 10GbE port. Jumbo frames were enabled for all the connections.

Item No	Qty	Type	Description	Processing Function
1	2	CPU	2.9GHz 8-core Intel(R) Xeon(TM) Processor E5-2690	NFS, ZFS, TCP/IP, RAID/Storage Drivers

Processing Element Notes

The SMA 8100 comprises a single storage controller containing two physical processors, each one equipped with 8 processing cores.

Description	Size in GB	Number of Instances	Total GB	Nonvolatile
SMA 8100 Controller Memory	256	1	256	V
Enterprise Flash Drive SLOG	25	6	150	NV
Grand Total Memory Gigabytes			406

Memory Notes

The Arkologic SMA 8100 controllers' main system memory is used as the cache for file system data and metadata, and also as general purpose memory for the UnityOS operating system. A separate log devices are used as filesystem intent logs that hold data that has not yet been committed to the main flash storage pools.

All in-flight file system transactions that have not yet been committed to the main flash pool are journaled to the 6 overprovisioned 25GB flash log devices that are present within the system. All transactions that would result in file system modification are journaled, including the user data contained in write operations. All such transactions are safely journaled prior to any acknowledgments being dispatched to host systems.

The system under test consisted of a single SMA 8100 storage controller that was equipped with 3 Arkologic Storage Memory Shelves, each shelf containing 24 400GB enterprise flash drives. Each shelf was connected to the controller using dual SAS connections connected to a dedicated, dual port SAS HBA (three HBAs total). The system was connected to a 10 gigabit ethernet switch via four 10GbE connections located on two, dual port 10GbE NIC adapters within the controller with the four network ports aggregated using LACP.

All data protection and data management features of the SMA 8100 product were enabled during the test. These features include the RAID protection functionality provided within the SMA 8100's enterprise flash drives, the parity RAID protection provided by the UnityOS operating system, and end-to-end file system checksumming.

Item No	Qty	Vendor	Model/Name	Description
1	12	Rackable	C1000	Rackable C1000 with 32GB RAM and CentOS 6.4
2	1	Dell	PowerConnect 8024F	Dell PowerConnect 8024F 24-port 10Gb Ethernet Switch

LG Type Name	LG1
BOM Item #	1
Processor Name	Intel(R) Xeon(TM) X5160
Processor Speed	3.00 GHz
Number of Processors (chips)	2
Number of Cores/Chip	2
Memory Size	32 GB
Operating System	CentOS 6.4
Network Type	10Gb Ethernet

Benchmark Parameters

Network Attached Storage Type	NFS V3
Number of Load Generators	12
Number of Processes per LG	9
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	1	apool/share1,apool/share2,apool/share3,bpool/share1,bpool/share2,bpool/share3,cpool/share1,cpool/share2,cpool/share3

Load Generator Configuration Notes

File systems were mounted on all clients and all were connected to the same physical and logical network.

Every client used 9 processes. All 9 file systems are mounted and accessed by each client and evenly divided amongst all network paths to the controllers. The file systems data was evenly distributed on the backend.

• Config Diagram