ibm ds8870 release 7.0 performance update€¢ consists of three workloads and a composite score...

2012 IBM Corporation

IBM DS8870 Release 7.0 Performance Update

Enterprise Storage Performance David Whitworth Yan Xu

IBM Systems & Technology Group

© IBM Corporation 2

Agenda

Performance Overview

System z (CKD)

Open Systems (FB)

Easy Tier

Copy Services



Performance Overview



Performance Benchmarks

• SPC Industry Standard Benchmarks • SPC-1 emulates I/O patterns of typical On-Line Transaction Processing (OLTP) applications

• Primarily random data access with a sequential component

• 40% reads / 60% writes / 8KB average IO size

• Application examples - resource planning, order entry, e-mail, financial services,

scheduling, reservations systems

• SPC-2 emulates applications that read and write large blocks of data in a sequential manner

• Consists of three workloads and a composite score that aggregates all of the workload

results into a single metric

• Application examples - archival, backup, business intelligence, and video streaming

• OLTP Database Simulation Benchmarks • Simulates IO done by OLTP applications. Similar to SPC-1. Do a mix of random reads and writes

with cache hits and cache misses.

• DBO(Database Open): 70% read/30% write, 4KB IO’s, 50% cache hit

• DB zOS(Database System Z): 75% read/25% write, 4KB IO’s, 72% cache hit

• Sequential IO • Large block sequential reads or writes to the storage server’s drives. Similar to SPC-2.

• Corner benchmarks • Perform just one type of IO pattern. Most applications combine a mix of different IO patterns.

• Cache Hits: 4KB random reads or writes to the storage server’s cache.

• Cache Misses: 4KB random reads or writes to the storage server’s drives.



DS8870 Performance Summary

Units

DS8700 P6 4 core

DS8800

P6 4 core DS8870

P7 16 core DS8870 16 core

vs DS8800 4 core

Rd Seq GB/s 9.7 11.8 21.0 1.8x

Wr Seq GB/s 4.7 6.6 11.0 1.7x

DB zOS K IO/s 201 204 640 3.1x

DB open K IO/s 191 198 550 2.8x



System z (CKD)

Performance



CKD OLTP Throughput Capacity

4K DB zOS (Cache Standard) Full Box

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

0 100,000 200,000 300,000 400,000 500,000 600,000 700,000

I/O Rate (IOPS)

Re

sp

on

se

Tim

e (

ms

)

DS8870 zHPF DS8800 zHPF DS8700 zHPF

DS8870 Ficon DS8800 Ficon DS8700 Ficon

3.1 x

Faster



CKD Sequential Performance

0.0

5.0

10.0

15.0

20.0

GB

/s

Bandwidth

Sequential Reads

DS8870 16 core DS8800 DS8700 DS8300

0.0

2.0

4.0

6.0

8.0

10.0

12.0

GB

/s

Bandwidth

Sequential Writes

DS8870 16 core DS8800 DS8700 DS8300



Open Systems (Fixed Block) Performance



SPC-1 Selected Results Product SPC-1 IOps $/IOps Notes Date

Kaminario K2-D 1,219,974 0.40 DRAM SSD, overall #1 7/2012

Huawei OceanStor

Dorado5100

600,052 0.81 SLC Flash SSD, overall #2 8/2012

SVC V6.2 520,044 6.92 Top scale out HDD, overall #3 1/2012

DS8870 16 core 451,082 10.81 Top scale up HDD, overall #4

67% faster than HDS VSP

10/2012

HP P10000/3PAR V800 450,213 6.59 Scale out HDD, overall #5 10/2011

TMS RamSan-630 400,503 1.05 Flash SSD, overall #6 5/2011

HDS VSP 269,507 8.18 11/2011

HDS USP-V 200,245 17.61 10/2007

DS8300 Turbo 123,000 18.99 #1 at publish 12/2006

DS8300 101,000 21.61 #1 at publish 10/2005



SPC-1 DS8000 vs Competition

DS8300 Turbo: 480 x 73GB 15K hdds, RAID10, 256 GB Cache

HDS USP V: 1024 x 146GB 15K hdds, RAID1, 256 GB Cache

HDS VSP: 1152 x 146GB 15K hdds, RAID1, 512GB Cache+512GB Cache Flash

3PAR V800: 1920 x 300GB 15K hdds, RAID1, 8nodes, 768GB Cache

SVC+2xDS8700: each DS8700 : 1024 x 146GB 15K hdds, RAID10, 384GB Cache

DS8870: 1536 x 146GB 15K hdds, RAID10, 32x 8Gb FCP, 1024GB Cache, 16 core

0

2

4

6

8

10

12

14

0 100000 200000 300000 400000 500000

I/O Request Throughput (IO/sec)

Re

sp

on

se

Tim

e (

ms

)

DS8300 Turbo

HDS USP V

HDS VSP

SVC 5.1 w/ 2x

DS8700

3PAR V800

DS8870 16 core



SPC2 Top Results Product SPC-2

MBps

$/MBps Notes Date

DS8870 8core 15,424 131 New #1 Result!

6% faster than previous #1

17% faster than HDS VSP

59% faster than DS8800

10/2012

SVC V6.4 w/ V7000 14,581 129 8/2012

HDS VSP/HP 9500 13,148 95/88 3/2012

Oracle Sun ZFS Storage

7420 Appliance

10,704 35 4/2012

DS8800 9,706 270 12/2010

HDS USP-V/HP XP24000 8,725 187 9/2008

TMS RamSan 630 8,323 49 5/2011

XIV Gen3 7,468 152 10/2011

DS8700 7,247 277 11/2009



0

2,000

4,000

6,000

8,000

10,000

12,000

14,000

16,000

18,000

MB

PS

DS8300

(non-

Turbo)

DS8700 DS8800 DS8870

8 core

DS8000 SPC-2 Comparison

Large File Processing

Large Database Query

Video on Demand

SPC-2 Aggregate



4K DB Open (70/30/50)

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

0 100 200 300 400 500 600I/O Rate (KIO/s)

Re

sp

on

se

Tim

e (

ms

)

DS8870 16 core 1536 HDD DS8870 8 core 1536 HDDDS8870 4 core 240 HDD DS8870 2 core 144 HDDDS8800 768 HDD DS8700 768 HDD

Open OLTP: Note:2/4 core DS8870 have very limited max HDDs

2.8X

Faster



64K DB Open (70/30/50)

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

0 50 100 150 200 250 300

I/O Rate (KIO/s)

Resp

on

se T

ime (

ms)

DS8870 16 core

Open - OLTP Throughput



64K DB Open (70/30/50)

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

0 5 10 15 20

GBps

Resp

on

se T

ime (

ms)

DS8870 16 core

Open - OLTP Throughput



0

5

10

15

20

25

KIO

/s

Throughput

Sequential Read

DS8870 16 core/1536 HDD DS8870 8 core/1536 HDD


DS8800 768 HDD DS8700 768HDD

DS8300 Turbo 512 HDD

Open Sequential Read DS8870 w/ 2 to 16 CPU cores vs previous models Note: 4 core DS8870 has 4 DA pair and 240 HDDs 2 core DS8870 has 2 DA pair and 144 HDDs

80%

Faster



0

2

4

6

8

10

12

KIO

/s

Throughput

Sequential Write



DS8800 768 HDD DS8700 768HDD

DS8300 Turbo 512 HDD

Open Sequential Write DS8870 w/ 2 to 16 CPU cores vs previous models Note: 4 core DS8870 has 4 DA pair and 240 HDDs 2 core DS8870 has 2 DA pair and 144 HDDs

70%

Faster



Easy Tier



Easy Tier 2-Tier: SSD/15K RPM

Workload

DB2 Brokerage Transactional Workload

Configuration

96 146GB 15K drives – RAID-5

16 400GB SSDs – RAID-5

DB2 9.7 FP1, 2 Instances, 2 x 2 TB DBs, 2 Buffer Pools at 54 GB each

2 x 2 TB volumes were allocated for database, temp files and data generation

2 x 100 GB volumes were allocated for log files



Easy Tier 2-Tier: SSD/15K RPM Application Transaction Rate

21

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

17

:38

:01

18

:38

:01

19

:38

:01

20

:38

:01

21

:38

:01

22

:38

:01

23

:38

:01

0:3

8:0

1

1:3

8:0

1

2:3

8:0

1

3:3

8:0

1

4:3

8:0

1

5:3

8:0

1

6:3

8:0

1

7:3

8:0

1

8:3

8:0

1

9:3

8:0

1

10

:38

:01

11

:38

:01

12

:38

:01

13

:38

:01

14

:38

:01

DB

2 O

ve

rall

Tra

nsa

ctio

ns/

Se

c

Time

DB2 Brokerage Transactional Workload with Easy Tier15K RPM/SSD

DS8870 DS8800

> 3.5X improvement



Easy Tier 2-Tier: SSD/15K RPM Application Response times

22



96 146GB 15K drives – RAID-5: initial configuration

OLTP to 50% of capacity

Low intensity batch workload (Sequential read/write) to 20% of capacity

No IOs to 30% of capacity

Add 8 3TB NL drives – RAID-6, capacity growth/equivalent

performance

Cold data are demoted to NL, more capacity on 15K tier

Add 8 400GB SSDs – RAID-5, performance boost

Easy Tier 3 Tiers – SSD/15K RPM/NL




0

2000

4000

6000

8000

10000

GB

15K Only

1_Tier

15K/NL

2_Tier

15K/NL/SSD

3_Tier

DS8870

15K NL SSD

Capacity Allocation across Tiers

0

2000

4000

6000

8000

10000

GB

15K Only

1_Tier

15K/NL

2_Tier

15K/NL/SSD

3_Tier

DS8800

15K NL SSD



Copy Services Performance



FlashCopy – Background Copy

DS8870 with 8 DA-Pairs is 50% faster than the DS8800 and a 125% faster than the

DS8700.

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

1 DA-Pairs 2 DA-Pairs 4 DA-Pairs 6 DA-Pairs 8 DA-Pairs

GB

PS

Background Copy

DS8870 DS8800 DS8700 DS8300



FlashCopy Effect on Transactional workload

28

0

40

80

120

160

No FlashCopy Standard FlashCopy Space EfficientFlashCopy

KIO

/se

c

4K DB zOS (Cache Standard) on 48 Ranks on 15K HDDs

DS8870 - 8 DA Pairs DS8800 - 8 DA Pairs DS8700 - 8 DA Pairs

DS8700 - 6 DA Pairs DS8300 - 6 DA Pairs



FlashCopy Effect on Sequential Workloads

29



Metro Mirror &

Global Mirror



0

1

2

3

4

5

6

GB

/se

c

1 Path 2 Paths 4 Paths 8 Paths

PPRC Establish Bandwidth

DS8870 DS8800

PPRC – Establish Bandwidth

For Peer-to-Peer Remote Copy establish, the P7 in the DS8870 provides

equivalent bandwidth scaling as a function of PPRC paths.



System z Metro Mirror

Note: MM Paths across 4 HAs with DS8870




Note: MM Paths across 4 HAs with DS8870



Metro Mirror : Sequential Write Bandwidth

0

1

2

3

4

5

6

GB

/se

c

1 Path 2 Paths 4 Paths 8 Paths

Metro Mirror - Sequential Write Bandwidth



System z Global Mirror

Note: GM Paths across 4 HAs



Thank You

Advanced Technical Skills (ATS) North America

© 2010 IBM Corporation

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ibm ds8870 release 7.0 performance update€¢ consists of three workloads and a composite score...

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