emc® vplex™ san connectivity · d best pract n 02 ights reserve lication is ac out notice. vided...

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Implementat EMC® Implem Fro ESX VPL Xtre tion Planning ® VPL entation nt-end Co Xi Path Lo LEX Back emIO Con Abs This VPL Dec Ver g and Best Pr LEX™ n Planni onnectiv oss Hand -end Arra nnectivity stract s document d LEX to storage cember 2014 sion 02 ractices Tech SAN ng and ity dling ay Conne y describes SA e array back- 4 nical Notes Conn Best Pra ectivity AN connectivi -end. ectivi actices ity for both H ty Host to VPLEX X front-end a nd

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Page 1: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

Implementat

EMC®Implem

Fro ESX VPL

Xtre

 

tion Planning

® VPLentationnt-end CoXi Path LoLEX Back

emIO Con

Abs

ThisVPL

Dec

Ver

g and Best Pr

LEX™ n Plannionnectivoss Hand-end Arra

nnectivity

stract

s document dLEX to storage

cember 2014

sion 02

ractices Tech

SAN ng and ity

dling ay Conne

y

describes SAe array back-

4

nical Notes

Conn Best Pra

ectivity

AN connectivi-end.

ectiviactices

ity for both H

ty

Host to VPLEXX front-end and

Page 2: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

2 EMC VPLEX SImplementat

 

SAN Connecttion Planning

Cop

Pub

EMCThe

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EMCCorher

For Trad

EMCImp

Part

ivity g and Best Pr

pyright © 201

blished Dec.

C believes the information

e informationresentations

blication, andess for a par

scribed in thi

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he informatio is subject to

in this publis or warrantied specificallyticular purpos publication

d the EMC loghe United Stroperty of th

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N Connectivityn Planning an

3546 Versio

nical Notes

poration. All r

n in this pubo change with

ication is proes of any kindy disclaims imose. Use, copn requires an

go are registeates and otheir respectiv

ng of EMC pr

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n 02

rights reserve

blication is achout notice.

ovided as is. d with respecmplied warrapying, and disn applicable s

ered trademaher countries.e owners.

roduct names

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EMC Corporact to the info

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software lice

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s, see EMC C

d in the USA.

f its publicati

ation makes rmation in thchantability any EMC sofnse.

marks of EMCademarks use

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Page 3: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

 

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Contents

nectivity cal Notes

ents

5 ............ 6 

............ 6 

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8 ............ 9 

.......... 13 

.......... 14 

16 .......... 17 

.......... 17 

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35 .......... 36 

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3

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4

Contents

EMC VPLEX SImplementat

 

SAN Connecttion Planning

D

Q

Q

Q

ivity g and Best Pr

Dual Engine

Quad Engine

Quad Engine

Quad Engine

ractices Tech

/ Quad X-Bri

e / Single X-B

e / Dual X-Bri

e / Quad X-Br

nical Notes

ck ................

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.......... 43 

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Page 5: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

 

This

Aud

Doc

SAN

s chapter pre

dience .........

cument Orga

N Connectivit

Imp

esents the fo

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nization ......

ty Overview .

plementation

llowing topic

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n Planning an

Chapte

cs:

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C

EMC VPLnd Best Pract

er 1 In

....................

....................

....................

Chapter 1: Intr

LEX SAN Contices Technic

ntroduc

...................

...................

...................

roduction

nectivity cal Notes

ction

........... 6 

........... 6 

........... 7 

5

Page 6: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

6

A

Chapter 1: Int

EMC VPLEX SImplementat

Audience

Documen

roduction

 

SAN Connecttion Planning

e

Thewilltech

nt Organ

ThisImpdocper

All d

Themad

ivity g and Best Pr

ese technical be configurihnical notes

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Fiber C

VPLEX

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documents a

e following lisde available:

EMC VPLE

EMC VPLE

EMC VPLE

EMC VPLE

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ractices Tech

notes are foing, installing requires an u

echnology an

Channel bloc

concepts an

ote is one ofn Planning an had previousmation that w

are available

st represents:

EX Overview a

EX SAN Conne

EX Host Multi

EX IP Network

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EX Data Mobi

EX REST API

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EX Virtual Edi

nical Notes

r EMC field pg, and suppo understandin

nd network de

k storage co

nd componen

f a set of docnd Best Practsly been avaiill be easier t

on http://su

s the technica

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Page 7: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

SAN Con

 

nectivity

ThisVPLarra

Hosreqreqheathe envenvGeo

y Overvie

s document iLEX Virtual Voays.

st connectivituirements wuirements ar

alth checks a system from

vironments ovironments. SoSynchrony C

Imp

ew

is designed tolumes and V

ty to VPLEX, rhich differ frore based on and ndu prech

m being upgrar Proof of Con

System limitCode level.

plementation

to address fro VPLEX backe

referred to asom the backe

architectural hecks. Connaded. Bypasncept but it is are availab

n Planning an

ontend SAN nd SAN conn

s frontend coend or VPLEX design limit

nectivity violasing these re

is not supporble in the Rele

C

EMC VPLnd Best Pract

connectivity nectivity for a

onnectivity, hX to array conations and a

ations will beequirements rted for prodease Notes f

Chapter 1: Intr

LEX SAN Contices Technic

for host acceaccess to sto

has very specnnectivity. Thare checked de flagged and is allowed fouction

for each

roduction

nectivity cal Notes

ess to rage

cific hese during d prevent or test

7

Page 8: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

8

Chapter 2: Fro

EMC VPLEX SImplementat

ontend Connec

 

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This

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ctivity

ivity g and Best Pr

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ntend/Host I

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ivity

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Page 9: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

Frontend

 

d/Host In

Noteduaaddno bmulto anewQuamaythe

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w engine whichad upgrade wiy choose to reb pair of new en

mplete physi

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plementation

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a single enginlance the hostand then not c connectivity tn issue. Whened initially butst be rebalancd there were nss the new eng

PLEX before c

tor to avoid cams for port

Chapter 2:

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minimum of

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9

Page 10: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

10

Chapter 2: Fro

EMC VPLEX SImplementat

ontend Connec

 

SAN Connecttion Planning

Figche

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Note

ctivity

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gure 1 Host eck requirem

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ase refer to t

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connectivitments

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Page 11: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

 

Figqua

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11

Page 12: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

12

Chapter 2: Fro

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Page 13: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

Host Cro

 

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13

Page 14: EMC® VPLEX™ SAN Connectivity · d Best Pract n 02 ights reserve lication is ac out notice. vided as is. with respec mplied warra ying, and dis n applicable s red tradema her countries

14

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3

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VPLEX A Dire

VPLEX B Dire

2 across fa

he same VPLE

he same VPLE

policy

n cross conneicy in all case

d quad system

cross conneferred paths

alternate andastores are n

plementation

ules

er must conne

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tors that an E

ctors that an E

luster connentend ports f

should see fo

bric A

ector port 0 (o

ector port 0 (o

bric B

EX A Director

EX B Director

ected configues. Round roms.

cted configu set per Data

d balance ove not all sendin

n Planning an

ect to a VPLE

A and B direc above for rec

ESX cluster co

ESX cluster c

ecting to a giv for all UCS bl

our paths to t

or 2 if second

or 2 if second

r port 1 (or 3

r port 1 (or 3

urations recobin should b

urations, fixedastore to the er the whole ng IO to a sin

Chapter 2:

EMC VPLnd Best Pract

EX A and a B d

ctors must becommendati

onnects to is

connects to is

ven VPLEX cllades regard

the same dat

d VBLOCK)

d VBLOCK)

if second VB

if second VB

ommend to ube avoided es

d pathing sh local VPLEX VPLEX front ngle VPLEX di

: Frontend Con

LEX SAN Contices Technic

director.

e picked fromons)

s 2 VPLEX dire

s 2 VPLEX dir

uster must uless of host /

tastore

BLOCK)

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use adaptive specially for

ould be used path only tak end (i.e. so tirector).

nnectivity

1nectivity cal Notes

m

ectors.

rectors.

se the / UCS

pathing dual

d and king care

that all

15

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16

Chapter 3: ESX

EMC VPLEX SImplementat

Xi Path Loss H

 

SAN Connecttion Planning

This

Pat

vSp

PDL

Handling

ivity g and Best Pr

s chapter pre

h loss handl

phere Storag

L/APD Refere

ractices Tech

Cha

esents the fo

ling semantic

ge for vSphere

ences ...........

nical Notes

pter 3

llowing topic

cs (PDL and A

e 5.1 ............

....................

ESXi P

cs:

APD) ...........

...................

...................

Path Los

....................

....................

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ss Hand

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...................

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dling

......... 17 

......... 20 

......... 21 

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Path loss

Persistent deloss (PDL)

 

s handlin

vSpnewLoson t

A stbecoccdevMetpercodthe the on tmacmacvSp

Whcanoff omacdatregusett

Fig

evice

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Imp

ntics (PD

cognize two dhese are knowher of these condition.

e is consideranently unavadevice is uninces an unrec

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re enters a Prtual machinsuing I/O to running memt remain activwer off and reonly to a PDL

istent devic

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different typewn as "All Pa

conditions ca

red to be in thailable to yountentionally rcoverable ha partition. Wh sends SCSI sognize that te codes mus permanently

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ce loss pro

n Planning an

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he permanenur ESXi host.

removed, its rdware error,hen the stora sense codes the device ha

t be receivedy lost. If virtuion exists onmmends pla that PDL con

evice Loss (Part them laterre. Otherwiseve workloadstuations. VMtions for virtund not to an A

ocess flow

Chapter 3: ES

EMC VPLnd Best Pract

th failures toAPD) and "Peed by the ESX

nt device loss. Typically, th unique ID ch, or in the caage determin to the ESXi has failed andd on all pathsual machine f

one of the dacing all files nditions can

PDL) state, Hir. A virtual me, it remains as without iss

Mware offers aual machines APD conditio

SXi Path Loss

LEX SAN Contices Technic

o an ESXi 5.0ersistent DevXi server dep

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register the s to the devic

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advanced ops. The followon.

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u1 and vice pending

when it ition n the ere

device is nse state of ce for

all reside he virtual virtual d by

ty (HA) owered ual he

ptions to wing

17

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18

vf

vf

Chapter 3: ESX

EMC VPLEX SImplementat

vSphere Stofor vSphere

vSphere Stofor vSphere

Xi Path Loss H

 

SAN Connecttion Planning

Advenahos

NoteHA wrule

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das

HA virtWhwer

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k.terminateV

each host ink.terminateV

s.maskCleanS

Advanced Opereas in ESXiwers off and i virtual mach to false, the restarted, whual machine

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phere web cli

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VMOnPDLDef

al Machine Oers off the virstore enters tFAULT, VMke

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ent:

to the host in

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ystem, click

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the host

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en introducednd to a PDL c

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fault set to tr

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A

APD Handlin

 

disk

AdvPDLwhipertheyrescvMSwanfunPleaconsett

1

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s command to/Disk/Autore

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to the host in

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K

ice Loss

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re or configurbe visible to t devices back handles thesescans all thbled on all hmmended foonfiguration te this feature

host using th Mode in ESX

o disable AutmoveOnPDL"

n the vSpher

b and click S

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to edit the v

m VPLEX, rem

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n Planning an

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toRemove: e" -i 0

re Web Client

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appropriate

value.

move or offlin

rts from switc

iew.

st, can cause

he all paths dor an unspecmple, a failed

ss (PDL) state available a

ssued commas commands

Chapter 3: ES

EMC VPLnd Best Pract

e of a vMSC eome orphane a PDL state aof the vMSC eain. This will e. The whole hings automhis reason the part of a vM Non-Uniformause a PDL sh

r SSH. For moXi 5.x (KB art

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item.

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ch or log in v

other errors

down (APD) scified period d switch.

te, the host tgain.

ands in an at fail the retrie

SXi Path Loss

LEX SAN Contices Technic

environment ed from the ore removed

environment require a ma reason for haatically. So y

he PDL AutoRMSC configuram vMSC hould have t

ore informatiticle 101791

settings adv

m backend.

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.

state when it of time. The

reats the APD

ttempt to reees for a prolo

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19

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20

v

A

A

Chapter 3: ESX

EMC VPLEX SImplementat

vSphere

Disable StorAPD Handlin

Change TimeLimits for StoAPD

Xi Path Loss H

 

SAN Connecttion Planning

perper

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ou disable thmmands in anme behavior a host to exce

st might beco

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ractices Tech

the host and oblems and p

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paths down (led, the host

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e Manage tab

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annot detect P when a storag sense codes.

rameter contrmmands to an change the

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eout parameteout if, for ex

0 seconds to

nical Notes

its virtual ma potentially b

APD handlingstem immedil machine co

(APD) handlint continues tome period. W

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n the vSpher

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PDL/APD

 

Pro

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22

Chapter 4: VP

EMC VPLEX SImplementat

LEX Backend A

 

SAN Connecttion Planning

This

Bac

Array Connect

ivity g and Best Pr

Chapte

s chapter pre

ck-end/Stora

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er 4 V

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Connecti

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ivity

......... 23 

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AA

Back-end

Active/ActiveArrays

 

d/Storag

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nnectivity as t

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Each direcacross dupaths to e

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LEX recommeptimal). This four active p

e: Exceeding t

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propriateness the group of rage arrays oup, or maski

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Connectiv

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nect applies o

ctor in a VPLEk-end storageequired). Thi

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ends a maxim is considerepaths to the s

the maximum

of storage vo appropriatel the array to Vd the four actle of four act

engine VPLEX to that direc to connect to

ugh all 32 poan be accomer two ports fports.

s would be ju LUNs and lim

often have limng view they

plementation

vity

onnectivity isckend direct mely limited. with regards

or Proof of Co backend conltiple arrays os the optima

nly to backend

EX cluster mue array and tos is referred

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ould have redEX Director harrays throug

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storage volum

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VPLEX via grotive paths petive paths peX cluster coulctor. In othero 32 ports onrts and still mplished usin

for access to

udged basedmitations of tmits around ty can have.

Chapter 4

n Planning an

s to use A/B connect. Th. The followis to the direc

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ust have a mo every stora to as an ITL o

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aths per direct

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meet the cong only two po another set

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4: VPLEX Back

EMC VPLnd Best Pract

fabrics for reis practice isng best practt connect wh

/dev and spehile reducingementationserall.

y. Frontend di

inimum of twage volume p or Initiator/T

nections to t required to h

both fabrics.

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edundancy hos immediatelytices for fabr

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owever y ric ble.

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s not

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d storage ant

al cted to

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uld be ups) and ector so

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our array would device per dule e or

workload ple, storage

23

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24

Chapter 4: VP

EMC VPLEX SImplementat

LEX Backend A

 

SAN Connecttion Planning

Maxmaxis nPro

Loapat

1

2

3

4

5

6

Array Connect

ivity g and Best Pr

ximum perfoximum numbot based on per balancin

ad balancing hs on each d

. Zone VP

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. Create agroups.

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tivity

ractices Tech

rmance, envber of ports o a single hosg of all availa

via Host Muldirector balan

PLEX director

PLEX director

for additiona

a separate po

each group o

evices to allo

nical Notes

ironment widon an array wt but the oveable resourc

ltipath betwences the load

A ports to on

B ports to a

al VPLEX engi

ort group with

of four ports a

ow access to

de, is achievewhile staying werall impact oes provides t

een VPLEX did equally bet

ne group of fo

different gro

nes.

hin the array

across array

the appropri

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for each of t

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iate VPLEX in

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7Fig

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Similar w the array be

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est

unks evices each

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25

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26

Chapter 4: VP

EMC VPLEX SImplementat

LEX Backend A

 

SAN Connecttion Planning

Thisdepmu

For

We foutwoInitthisturnGroandallo

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tivity

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AA

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27

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28

Chapter 4: VP

EMC VPLEX SImplementat

LEX Backend A

 

SAN Connecttion Planning

Fig

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Thethe

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29

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30

Chapter 4: VP

EMC VPLEX SImplementat

LEX Backend A

 

SAN Connecttion Planning

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Fig

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31

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32

S

Chapter 4: VP

EMC VPLEX SImplementat

Significant B

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A

Additional AConsideratio

 

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Chapter 4

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agement mah should be provisioned rray to the host to dedicat

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higher ports

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ay require a d solely for the to the VPLEX

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33

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34

Chapter 4: VP

EMC VPLEX SImplementat

LEX Backend A

 

SAN Connecttion Planning

to aalteunu

Remdocarra

Array Connect

ivity g and Best Pr

a volume thaternative woulused VPLEX d

member to recumentation ay best pract

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ractices Tech

t is a multiplld be to use a

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e of 4K first t a host based

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This

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35

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36

X

Chapter 5: Xtr

EMC VPLEX SImplementat

XtremIO

remIO Connect

 

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V

VPLEX Co

 

onnectivi

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SI port on alwithin the clun Storage Con the XtremIO ces. From a hictor across Xterall cluster.

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37

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38

SS

Chapter 5: Xtr

EMC VPLEX SImplementat

Single EnginSingle X-Bric

remIO Connect

 

SAN Connecttion Planning

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39

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40

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42

X

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43

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44

S

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45

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46

Chapter 5: Xtr

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47