XtremIO Flash Memory, Performance & endurance

(1)

Madis Pärn

Senior System Engineer

EMC

(2)

History



February 2000?



What Intel CPU was in use?



What about today?

First 15K HDD

32-bit, 1C (4C/server),

1GHz, 4GB RAM

(3)

FLASH

REDEFINES

EVERYTHING

(4)

XtremIO All-Flash Scale-Out Arrays

Thin Provisioning

Inline Data Reduction

XDP

Over 250 TB

Logical Capacity

10 TB X-BRICKS

20 TB X-BRICKS

UP TO 1,000,000 FULLY RANDOM IOPS

10–40 TB

Per Cluster

Physical Capacity

Per Cluster

(5)

NO TUNING.

One X-Brick System

Two X-Brick Cluster

Four X-Brick Cluster

Handle any OLTP, Virtual Server, VDI workload

Scale-Out from 2–8 Controllers

Up to 128 Cores!

150K MIXED IOPS

250K READ IOPS

600K MIXED IOPS

1M READ IOPS

ALL DATA SERVICES ACTIVE

GLOBAL INLINE DATA REDUCTION

(6)

SP A

SP B

InfiniBand RDMA

32

CPU CORES

512

GB RAM

25

eMLC SSDs SAS 2.0 SAS 2.0

2 x FC 2 x iSCSI

8

HOST PORTS 2 x FC

2 x iSCSI

256GB

RAM

256GB

RAM

Cluster Building Block

(7)

X-Brick 3

X-Brick 1

X-Brick 2

X-Brick 4

SHARED MEMORY METADATA

RDMA

Fabric

Unique User Data

(8)

FLASH!

(9)

1858:

Internal combustion engine invented

Jean Joseph

Étienne

Lenoir

1885:

First internal combustion vehicle

Gottlieb

Daimler &

Wilhelm

Maybach

1903:

The first powered aircraft

Orville &

Wilbur

Wright

1980:

Flash memory invented

~2010:

First Flash Arrays

2013:

Next Generation All-Flash Arrays

REDEFINE

(10)

XtremIO’s Unique

Architecture

CONTENT BASED DATA PLACEMENT

Scale-out. Inherent balance. Data reduction.

XTREMIO DATA PROTECTION

Superior capacity, endurance, performance.

SHARED IN-MEMORY METADATA

Zero impact copy services.

DUAL-STAGE METADATA ENGINE

Consistent. Predictable. No system-level

garbage collection.

(11)

INLINE DATA

REDUCTION

Never Write

Duplicate Data

THIN

PROVISIONING

4KB Allocations

Optimal Utilization

DATA

PROTECTION

Flash-Optimized

Zero Configuration

WRITABLE

SNAPSHOTS

Instant Copies

Full Performance

Flash-Optimized Data Services

XtremIO

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XtremIO Content Engine

CA38

C90

4K

1

3

4 F8

7

1 4K

0

3

2

5 F7

A

4K

F3

AFB

A3

4K

A

B4

5 CB7

4K

2

0

1

4

7 A8

4K

9

6

3 FE7

B

4K

9

6

3 FE7

B

4K

INCOMING DATA STREAM (32K)

RANDOMIZE LOCATIONS

FIND MATCHES

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XtremIO Inline Data Reduction



Always on, inherent function



Scales-out



Truly inline, global, always on



Improves array performance



Lowers $/GB



Extends flash endurance

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Thin Provisioning



Always thin provisioned



100% performance



Perfect 4KB allocation granularity



No fragmentation or reclamation

penalty

(15)

XtremIO Data Protection (XDP)



No configuration



No hot spares



SSDs may fail in place



Adapts to failures

(16)

XDP RAID 1 RAID 5 RAID 6 RAID 5/RAID 6

_Combo

Capacity Overhead

8%

50%

25%

20%

30%

XtremIO Data Protection

SUPERIOR

USABLE CAPACITY

UP TO 4X

BETTER PERFORMANCE

UP TO 4X

BETTER ENDURANCE

Write I/O Overhead

(stripe update)

1.22 (64%)

2 (64%)

2 (146%)

3 (310%)

5 Read I/O Overhead

(17)

XDP Rebuilds and Hot Space

Allows SSDs to Fail-in-Place



Rapid, distributed,

content-aware rebuilds



No performance impact

after rebuild completes for

up to six failed SSDs per

X-Brick

5

5 5 failed SSDs

(18)

“Functional IOPS” vs. Hero Numbers



Measured end-to-end at the host



100% random



All flash pages non-zero



Array filled to 80% – forcing overwrites



Any size LUNs, any LBA range



Mixed read/write I/O



Increasing thread counts



Extended time periods

ALL DATA

SERVICES

(19)

Full VMware VAAI



Easy-to-manage multi-TB volumes



Accelerated formatting



Enhanced copy services

(VAAI + Inline Data Reduction +

In-memory metadata)

(20)

XtremIO Configuration

One Screen: Zero Planning, Zero Tuning

3 MAP

VOLUMES

2 CREATE

INITIATOR

GROUPS

1 CREATE

(21)

Uptime: 100%

The workload is

so strenuous that

in years past the

HoL has

experi-enced outages.

Nothing of the

sort this year.

VMware Hands-On Labs

http://www.xtremio.com/vmworld-2013-cool-facts-about-xtremio-powering-the-hands-on-labs/

Total number of

VMs delivered:

85,873

Total labs taken:

9,587

The maximum

IOPS seen by any

of the XtremIO

X-Bricks was

50,000—less than

1/3 of its overall

performance

potential.

(22)

VNX-F All Flash Array

UP TO 500,000 IOPS

SCALES TO 41 TBs

Low

Flash

$/GB

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