250%SMB IOPS

write

read

h4.5.4h5.0.0 vs

300%20%

SMB Seq.

write

read

50%

Per formance Test P l an and Resu l t

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Introduction

The QNAP TS-h2490FU AFA (All Flash Array) solution uses an enterprise ZFS filesystem

and supports optimization technologies to improve SDD performance. The I/O performance

of NAS is not only bound by drive specifications , but also by CPU frequency and memory

size. The data compression and data deduplication technology supported by the ZFS

filesystem also has a great impact on data processing efficiency. These documented tests

focus on the overall I/O performance of the TS-h2490FU.

Performance Test Plan

About Cache Hit and Directly Written to Drive

Whether the total size of the transferred files is greater than the main memory (RAM) determines the

performance of the read and write performance of the NAS system. If the written data is less than the

RAM capacity, the data will be written to memory and the writing is reported to be completed (Cache

Hit) which can achieve relatively high performance. Conversely, when the total amount of reads/writes

is greater than the RAM capacity, all IO will be direct to the drives, and the performance will be

affected by the drive configurations.

About Data Compression and Data Deduplication

Data Compression uses CPU resources to compress files, while Data Deduplication mainly consumes

RAM resources for comparison and a small amount of CPU computing. Usage of these technologies

will impact overall system performance.

In these tests, we use unique (non-duplicate) files that cannot be compressed to verify the actual

performance using the maximum consumption of computing resources.

Note: If a compressible and repeatable file is used in testing, the gain effect will be close to

the performance of Cache Hit and will cause the test results to be distorted. Therefore, these

tests are verified under the most stringent conditions, and the actual usage of end-users

should receive better performance than the test results.

Per formance Test P l an and Resu l t

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NAS:TS-h2490FU-7302P-128G NAS with QuTS hero 4.5.0 / h4.5.4 / h5.0.0

WD Ultrastar DC SN640 NVMe SSD *24 (RAID 50)

Broadcom Dual-port 25GbE NIC with NetXtreme®-E Series BCM57414 controller *3

Client PC:Intel Core™ i7-7700 4.20GHz CPU, 32GB DDR4 RAM, QXG-25G2SF-CX4, Windows® Server 2016

Intel Core™ i3-8100 3.60GHz CPU, 4GB DDR4 RAM, QXG-25G2SF-CX4, Windows® Server 2016

Wr i t t en to D r i ves .

Random I /O runs on 4K b lock s i ze LUN

Sequen t i a l I /O runs on 128K b lock s i ze LUN

Each C l i en t uses a 16GB tes t f i l e ( to ta l amoun t 96 GB) to ve r i f y the pe r fo rmance when Cache H i t .

Each C l i en t uses a 512GB tes t f i l e ( to ta l amoun t 3TB ) to ve r i f y the pe r fo rmance when D i rec t l y Wr i t t en to D r i ves .

6 C l i en t PCs connec ted s imu l taneous l y fo r read ing and wr i t i ng ,

A

B

25 GbE 25 GbE 25 GbE 25 GbE 25 GbE 25 GbE

T S - h 2 4 9 0 F U - 7 3 0 2 P - 1 2 8 G

Test Configuration, Environment, and Results

Test Configuration

Test Environment

When TS-h2490FU announced on 2020/09/16

69%

29%

48%

61%

31%

22%

47%

47%

652

388

66

105

337

39

25

166

17

13

0.63

0.19

18

14

6

3

10394

13575

129200

395000

9260

11078

101100

278700

56%

28%

72%

56%

31%

22%

33%

62%

805

1344

66

30

341

31

36

27

15

11

0.35

0.15

19

14

6

2

10582

14028

204612

471714

8399

11504

99761

310369

SW-512K

SR-512K

RW-4K

RR-4K

SW-512K

SR-512K

RW-4K

RR-4K

C a c h e H i t P e r f o r m a n c eC o m p r e s s i o n O N , D e d u p e O NC o m p r e s s i o n O N , D e d u p e O F F

N A SC P U

%

6 h o s t s2 5 G b E x 6

I O A c c e s sU n i tP r o t o c o l

i S C S I

T h r o u g h p u t ( M B / s)

I O P S

T h r o u g h p u t ( M B / s)

I O P S

S A M B A

L a t e n c y m s

M a x .A v g .

N A SC P U

%

6 h o s t s2 5 G b E x 6

L a t e n c y m s

M a x .A v g .

Page

04

Wr i t ten to D r i ves .

Random I /O runs on 4K b lock s i ze LUN

Sequen t i a l I /O runs on 128K b lock s i ze LUN

6 C l i en t PCs connec ted s imu l taneous l y fo r read ing and wr i t i ng ,

Per formance Test P l an and Resu l t

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05

Note : TS-h2490FU de fau l t se t t i ngs a re Compress ion ON, Dedupe OFF

68%

63%

58%

69%

75%

23%

46%

46%

665

1771

516

152

334

165

43

6884

22

15

7

3

20

19

8

6

3755

5499

104500

200400

5035

6853

79100

110000

62%

83%

71%

71%

59%

19%

41%

56%

577

150

85

101

455

197

37

4676

18

9

4

3

22

24

7

4

4344

9235

145325

229217

4302

3926

85507

159808

SW-512K

SR-512K

RW-4K

RR-4K

SW-512K

SR-512K

RW-4K

RR-4K

R e a l P e r f o r m a n c eC o m p r e s s i o n O N , D e d u p e O NC o m p r e s s i o n O N , D e d u p e O F F

N A SC P U

%

6 h o s t s2 5 G b E x 6

I O A c c e s sU n i tP r o t o c o l

i S C S I

T h r o u g h p u t ( M B / s)

I O P S

T h r o u g h p u t ( M B / s)

I O P S

S A M B A

L a t e n c y m s

M a x .A v g .

N A SC P U

%

6 h o s t s2 5 G b E x 6

L a t e n c y m s

M a x .A v g .

When TS-h2490FU announced on 2020/09/16

Page

06

Per formance Test P l an and Resu l t

Test Result between QuTS hero h4.5.4 and h5.0.0 (kernel improvement)

55%

30%

71%

61%

34%

22%

32%

60%

666

2154

1277

30

330

29

39

35

15

12

0.37

0.18

20

15

6

2

10929

13746

215842

447883

8267

11125

109680

316955

29%

30%

63%

70%

43%

39%

56%

78%

2686

11006

108

112

127

63

33

19

17

10

2.61

0.97

17

10

2

1

10958

15104

245006

661110

9275

16236

284680

981474

SW-512K

SR-512K

RW-4K

RR-4K

SW-512K

SR-512K

RW-4K

RR-4K

C a c h e H i t P e r f o r m a n c eh 4 . 5 . 4h 5 . 0 . 0

N A SC P U

%

6 h o s t s2 5 G b E x 6

I O A c c e s sU n i tP r o t o c o l

i S C S I

T h r o u g h p u t ( M B / s)

I O P S

T h r o u g h p u t ( M B / s)

I O P S

S A M B A

L a t e n c y m s

M a x .A v g .

N A SC P U

%

6 h o s t s2 5 G b E x 6

L a t e n c y m s

M a x .A v g .

Note : TS-h2490FU de fau l t se t t i ngs a re Compress ion ON, Dedupe OFF.

64%

85%

72%

74%

63%

22%

40%

56%

551

138

363

25

607

81

153

3260

17

9

4

3

21

28

7

4

4528

5499

144938

235078

4632

3489

86953

150621

55%

79%

67%

45%

54%

70%

68%

41%

463

134

105

309

191

97

45

18

15

15

3

4

13

11

3

3

5186

5207

185336

180107

5955

7492

219430

192374

SW-512K

SR-512K

RW-4K

RR-4K

SW-512K

SR-512K

RW-4K

RR-4K

R e a l P e r f o r m a n c eh 4 . 5 . 4h 5 . 0 . 0

N A SC P U

%

6 h o s t s2 5 G b E x 6

I O A c c e s sU n i tP r o t o c o l

i S C S I

T h r o u g h p u t ( M B / s)

I O P S

T h r o u g h p u t ( M B / s)

I O P S

S A M B A

L a t e n c y m s

M a x .A v g .

N A SC P U

%

6 h o s t s2 5 G b E x 6

L a t e n c y m s

M a x .A v g .

Test Result between QuTS hero h4.5.4 and h5.0.0 (kernel improvement)

Page

07

When us ing the 16 GB tes t f i l e , even i f a l l 6 C l i en t connec t ions a re read and wr i t t en ,

s ince the to ta l read and wr i t e vo lume o f 96 GB i s l ess than the NAS RAM capac i t y,

a f te r the da ta i s w r i t t en to memor y, i t w i l l r epo r t t ha t the wr i t e ac t ion i s comp le te ,

wh ich i s Cache H i t .

When us ing the 512 GB tes t f i l e , and a l l 6 C l i en t connec t ions read and wr i t e . S ince

the to ta l read and wr i t e vo lume o f 3072 GB i s g rea te r than the NAS RAM capac i t y,

a l l da ta w i l l be wr i t t en d i rec t l y to the SSD.

The ove ra l l pe r fo rmance o f Cache H i t i s g rea te r than the pe r fo rmance o f d i rec t l y

w r i t i ng to d r i ves as RAM is s ign i f i can t l y f as te r than SSDs.

Compared w i th the o lde r ve rs ion o f QuTS he ro (h4 .5 .x ) , t he newer ve rs ion o f QuTS

he ro (h5 .0 .0 ) w i th an upda ted Ke rne l p rov ides be t te r ( up to doub le ) pe r fo rmance ,

and a l so has reduced CPU usage and l a tency.

When tes t da ta i s l ess than 128 GB, 4K random- read can reach 981K IOPS

pe r fo rmance , and 512K sequen t i a l - read can reach 16 GB/s (equ i va len t to s t ream ing

a 2-hou r l ong 4K v ideo f rom Ne t f l i x eve r y second ) .

1

2

3

Conclusion

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08

Per formance Test P l an and Resu l t

QTS hero edition AMD Rome NAS

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