6 Maggio 2016

Andrea Mauro IT Director – Assyrus Srl http://assyrus.it

Evento Dell-Assyrus sull'evoluzione dello

storage enterprise

2

Evoluzione dello storage

3

Source: IDC

0

10

20

30

40

50

60

70

80

90

96 98 00 02 04 06 08 10 12

Physical servers (M) VMs (M)

Year

Server Virtualization Driving 40% Storage Growth

Growth of Hosts & VMs Growth of Storage

40% per year will double storage infrastructure every two years.

4

Crescita di dati non strutturati

5

6

Tipi di storage

7

Tipi di storage

Tecnologia Protocollo Velocità Tipo di dati Utilizzo

DAS SCSI, SAS 320 MB/s, 6 Gb/s blocchi storage locale

NAS IP 1Gb/s, 10 Gb/s file file sharing

CAS IP archivi archiviazione

SAN Fibra FC 8 Gb/s, 16 Gb/s blocchi storage condiviso

SAN Rame FCIP, iSCSI 1Gb/s, 10 Gb/s blocchi storage condiviso

• DAS (Direct Attached Storage)

• NAS (Network Attached Storage )

• SAN (Storage Area Network)

8

Tipi di storage

9

Unified Storage

• Convergenza nello storage

• Unico “appliance” con – NAS

– SAN – FC

– iSCSI

• Convergenza dei protocolli di accesso?

10

Architettura di uno storage

• Tipo di storage

• Tipo di protocolli

• Tipi di dischi

• Tiering e cache su flash/SSD

Interface Buffer HBA

Disk Drive / Storage

Internal transfer rate measured here

External transfer rate measured here

Head Disk Assembly

Controller

11

Controller / Storage Processor

• Server con relativo sistema operativo – Gestione completamente via software

– Non necessariamente SDS

12

Prestazioni di front-end

• Ethernet 1 Gbps

• FC 4 Gbps

• SAS 6 Gbps

• FC 8 Gbps

• Ethernet 10 Gbps

• SAS 12 Gbps

• FC 16 Gbps

• PCIe v4.0 (x16) -> 31,51 GB/s

• DDR4-2400 -> 18,75 GB/s

13

Prestazioni di back-end

• Tipo di dischi – 7K

– 10K

– 15K

– SSD – SLC

– MCL

– 3D-NAND, V-NAND

• Parallelismo

• Ridondanza

• Bus

• Compressione/Deduplica

14

Quali (e quanti) dischi?

SC Operating

System

Type SCv2000/SC100

12 disks SCv2020/SC120

24 disks SCv2080/SC180

42 disks

2TB NLSAS X NA X

4TB NLSAS X NA X

6TB NLSAS X NA X

1TB NLAS 2.5” NA X NA

2TB NLAS 2.5” NA X NA

600GB 10k NA X X

900GB 10K NA X X

1.2TB 10K NA X X

1.8TB 10K NA X X

300GB 15k X X X

600GB 15K X X X

200GB WI X X X

400GB WI X X X

800GB MU X X X

1.6TB MU X X X

480GB RI X X X

960GB RI X X X

1.6TB RI X X X

1.92TB RI X X X

Annunciati sul mercato:

• 10 TB SATA (3,5’’) WD helium drive

• 16 TB SSD (2.5’’) Samsung

15

Differenti architetture

TYPE

1 Clustered

Scale Up & Down

• Dual Controller

• Shared Meta-Data

• Transactional Commits

• General Purpose

Storage

TYPE

3 Loosely Coupled

Scale Out

• Independent Controllers

• Distributed Meta-Data

• Transactional Commits

• Large Content

Repositories

TYPE

2 Tightly Coupled

Scale Out

• Multi-Controller Grid

• Shared Meta-Data

• Transactional Commits

• Linearity in all things

TYPE

4 Distributed

Share Nothing

• Independent Controllers

• Distributed Meta-Data

• Non-Transactional

Commits

• 3rd Platform Applications

16

Converged Architectures Hyper-converged Architectures Common Modular

Building Block Appliances

Rack Scale

Integrated Rack Scale

Common Rackscale

Building Blocks

Embedded

Integrated Best-of-Breed

Integrated Stack

Integrated Infrastructure

Software-Defined

BYO Commodity

Definition

• Decomposed and redesigned for high density or high capacity or low power server architectures

• Unit size of 4U chassis to full rack

• Open Source plays a more critical role

• Workload optimized systems of server, storage, network, and mgmt. SW

• Sold w/pre-integrated packaged SW

• Generalized compute within storage arrays

• Host locally executed workloads

• Generally only suitable for workloads focused on data proximity or data services

• General purpose pre-int. & Ref arch. systems containing server, storage, network, & mgmt. SW .

• Excellent support for legacy workloads/brownfield

• Commodity HW and DIY mgmt. and orchestration SW

• Non-appliance model

• VMware SDDC and Openstack Framework & Distros

• All-in-one box systems

• Compute and storage in a small, scalable node (2U)

• SMB/Robo prime target

• Simplicity/cost are main value prop

• VMware almost always used

• Scalable systems of racks plus bare metal resource allocation

• M&O Spans HW & SW; Multi-rack management

• Open Source plays a more critical role

“6 Phylum” of Converged Infrastructure

Source: EMC Market Intelligence, EMC OCTO, EMC ETPD, IDC, Gartner, Company websites, SME interviews

17

Converged Architectures Hyper-converged Architectures Common Modular

Building Block Appliances

Rack Scale

Integrated Rack Scale

Common Rackscale

Building Blocks

Embedded

Integrated Best-of-Breed

Integrated Stack

Integrated Infrastructure

Software-Defined

BYO Commodity

Strengths

• Best way to deploy additional storage services

• Flexibility of any hardware choice.

• Start very small

• Simple support model

• Unbeatable simplicity

• Fastest time-to value at the application level

• Well suited for general scale SP, SaaS P3 workloads

• Flexible

• Simple Support Model

• Supports specialized, high-end P3 workloads due to custom HW

• Simple support model

“6 Phylum” of Converged Infrastructure

Weakness

• Poor economics for general purpose workload use

• “Non-predictable outcome”

• Non-integrated acquisition and support model

• Poor economic scaling past ~1000 VMs

• Rigidity for datacenter use cases

• Poor support for legacy workload SLAs and infrastructure expectations

• Poor support for legacy workload SLAs and infrastructure expectations

• Application Silo • High “Step In” Cost.

• Premium economic scaling factors

• Well suited and broad support for P2 workload requirements

• Proven, mature

Source: EMC Market Intelligence, EMC OCTO, EMC ETPD, IDC, Gartner, Company websites, SME interviews

18

Flash & Cache

19

Storage Hierarchy

20

La latenza (e la velocità) non è la stessa

L1-L3

Cache 10 ns DRAM

100 ns

Flash

15 µs

HDD

4 ms

Blink of an eye

1/10 second

Get Coffee

2,5 minutes

Fly to Australia

12 hours Heartbeat

1 second

Multiplier is 10.000.000

21

Storage tier

22

Data centers need to handle many types of diverse application workloads • Applications are getting more dependent on higher I/O performance

• Traditional storage systems are optimized for the middle of the spectrum

• Data stored, backed up and archived is growing exponentially

• SLAs are becoming more rigorous

• IT budgets are often staying flat

Random

Sequential

Read-intensive Write-intensive

Indexing

Front End Web

OLTP Database

Email/Messaging

Data Warehousing

Virtual Desktop

HPC

Streaming Media

Web Applications

Collaboration

Infrastructure

Other

23

Primary Storage Mission Critical

Secondary Storage

● Fragmented

● Inefficient

The Storage Iceberg

24

Storage tiers

• Absolute Performance Array (Tier 0)

• •Low-Latency NVMe over Fabrics (Ethernet, InfiniBand)

• •Extreme I/O throughput & latency performance

• •Streamlined virtualization, efficiency, or enterprise features

• SAN All-Flash and Hybrid Arrays (Tier1)

• •Mixed use cases

• •All-Flash and Cost-Optimized Hybrid Arrays

• •Enterprise features snapshots, clones, replication, dedupe

25

New form factors: PCIe cards, appliances, shared

storage

Virtualization is increasing the demand for random I/O with the “mixer effect”

Flash prices falling faster than HDDs but still

considerably higher than 15K HDDs

Multi-core processors drive up processor utilization and demand for more I/O per server

Flash adoption is accelerating Pent-up demand for improving application performance at the right price point

15K HDD

$/G

B

Flash SSD

7.2K HDD

26

Cache & Flash

• Lato Storage – Full Flash

– Hybrid – Multi-tiering o caching

• Lato Host – Schede PCI-e Flash

– SSD

– Nuove DIMM? – NVDRAM

• Software di gestione?

27

La lunga strada verso lo storage

Insert

Flash

Here

Or Insert

Flash

Here

Or use

RAM!

28

Cache lato host

Up to 3.0TB of capacity per PCIe slot

Up to 2.4TB of capacity per x8 PCIe slot

Up to 3.2TB of capacity per PCIe slot

Up to 1.2 TB of capacity per slot for maximum performance density

MEZZANINE

29

NVME e NVME over Fabric

30

Oltre il FC

31

Oltre le RAM?

• Flash al posto della RAM? – Tecnologia introdotta nel 2015

32

Oltre di hard disk?

• Seagate Kinetic Open Storage – https://www.openkinetic.org/

• Non solo firmware ma un vero e proprio sistema operativo nel disco!

• API di accesso via Ethernet

• Ma anche altre proposte – HGST Open Ethernet Storage

Grazie per il vostro tempo!