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Performance & Benchmarks

Test Specifications

TypeSingle LANDual LAN
Processor Intel Core i7-3770K 3.5GHz (3.7 to 3.9GHz Turbo) Intel Pentium Dual Core E6300
Motherboard ASUS P8Z77-V Pro, BIOS 2104 Gigabyte EP45-DS3R
Memory 16 GB - 4x 4GB Corsair Vegenance DDR3-2400 C10 4GB DDR2-800 CL5
System Drive Kingston HyperX 120GB SSD

Samsung Spinpoint 500GB RAID-0
Hitachi 5K160

Travelstar 2.5" 160GB SATA

Aux Drives Seagate Barracuda ST3000DM001 3.5" 3TB SATA
Seagate Backup Plus 1TB 2.5” External USB 3.0
 
Operating System Microsoft Windows 7 Ultimate 64bi
Microsoft Windows 8.1 Professional 64bit
Latest updates as of Feb 2013.
Microsoft Windows 7 Ultimate 64bit
Microsoft XP Professional SP3
Latest updates as of Feb 2013
Storage Driver Intel Rapid Storage 12.9 Intel Rapid Storage 12.9
Network Intel 579V Gigabit, PROset 18 2x Realtek 8111 with Teaming Driver
Intel Pro 1000 MT Dual Port PCI Adapter

 

 

Seagate Constellation ES.3

Before looking at multi drive RAID performance, we establish the performance of a single Seagate Constellation ES.3 Drive connected to the ASmedia ASM1061 drive SATA 6Gbps port in Our Intel Core i7 test system. We used AIDA64 to perform a read test only as we did not want to destroy the RAID array as it takes a long time to rebuild in the NAS.

Seagate Business NAS Constellation ES.3 benchmark

SPAN/JBOD

Seagate Business NAS benchmark

RAID-0

Seagate Business NAS benchmark

RAID-1

Seagate Business NAS benchmark

RAID-5

Seagate Business NAS benchmark

Seagate Business NAS benchmark

RAID-10

Seagate Business NAS benchmark

Seagate Business NAS benchmark

We also forced ATTO to Randomise it's test data, achieving half typical throughput of the Gigabit network connection

Seagate Business NAS benchmark

USM (eSATA)

There are two possible use cases here.

A) Backup entire NAS contents (12TB RAID-5) to External Disk B) Backup External Disk to NAS

We went with B as a user/business would want to backup contents of an already used external drive to the redundant array, to free up the external drive and protect its contents.

Also our test drive is known to be fast so any slowdowns will be down to processing power and bottlenecks not the disks themselves.

Our test case for testing the dock for the External USB drive was to take our 90% full, NTFS formatted Seagate Backup Plus 1TB 2.5" External drive and have the NAS copy its contents to its disk array automatically using the built in web ui feature.

On the NAS Dashboard we hit the 'Launch backup' Button, which launches the 'Protect job manager page'

Seagate Business NAS Backup benchmark

Proceed through the prompts, and you will get a status progress box where you can get further details on the backup job if needed . You can walk away now

Seagate Business NAS Backup benchmark

Near Fifteen minutes later we checked the progress

    Elapsed Time: 00:17:13

    Estimated Remaining Time: 24:17:54

Sometimes these counters are vague, so we checked the results of the actual transfer progress

8 Gigabytes was copied 12 minutes, or 667MB per minute and 11 MB/s

11 MB/s is a third of the speed of USB 2.0, let alone SATA-II interface and a drive that is known to perform at up to 100MB/s over SATA and USB 3.0.

Completely unacceptable given a late 2000s PC can backup up to 20MB/s

We gave the NAS benefit of the doubt and came back later but the progress was even worse:

Seagate Business NAS Backup benchmark

I had enough at this point and stopped the backup.

If the system had maintained a rate 20MB/s over 1hr 15mins, we would have 90GB copied. If 100MB, would have copied 450GB.

But we only achieved 23.5GB copied total when the backup was stopped, 5.2 MB/s !

It had slowed down due to the high density of files to be backed up. being 17,600 files by the time the backup was stopped.

To add insult to injury, the following error when cleaning up the failed backup:

Seagate Business NAS Backup benchmark

We have seen this with other routers and NAS, not only is the CPU not strong enough to maintain high throughput but the overload of NTFS is too much.

The popular cloning software Clonezilla as well as windows can max out connected drives even on 2007 era hardware, where as this 2012 NAS, selling at $1600 for the 16TB version cannot.

To prove it was a processing issue, we took our USM Seagate Backup drive and reconnected it to the USB 3.0 port on the NAS

USB 3.0

With USM(eSATA) now 'written off', we shared our USB 3.0 drive over the LAN and ran a read/write benchmark. While we could not max out USB 3.0 due to bottlenecks in the NAS's system board, we did achieve a healthy throughput worthy of USB 3.0

Seagate Business NAS USB 3.0 benchmark

Now if only the NAS itself could achieve these rates internally.

Dual Gigabit Ethernet

The dual LAN feature in the NAS is not documented at all by Seagate and we could not get the correct performance using two LAN cables direct connection between a configured test PC and the NAS

For teaming Realtek Network Adapters, the driver is hard to find online and outdated, from the Windows Vista era. Achieving very poor read speeds using two Realtek LAN teamed together, in the single digit MB/s and driver instability we abandoned testing the Dual Realtek LAN on Win7 and switched to a Dual Port Intel Adapter. However, we needed to use XP for this older card to use the Adapter Teaming feature in Intel PROset drivers.

We saw the same performance

Seagate Business NAS Network Teaming

Despite Proset's teaming diagnostics seeing that the NAS was also set to team its Network Ports.

Seagate Business NAS Network Teaming

Seagate Business NAS Network Teaming

We presume that the correct documentation and configuration for the feature is in the developers kit for the main Cavium Processor, however our test setup was perhaps not optimal, lacking a suitable managed network switch.

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