denis_frank-svc_760_performance_targets.pdf

7/24/2019 denis_frank-svc_760_performance_targets.pdf

1/8

2015 IBM Corporation

Spectrum Virtualize V7.6Performance Targets

Denis Frank

Spectrum Virtualize performance architect

cto!er 2015


2/8

2

IBM internal " #erformance tar$ets for Spectrum Virtualize V%&'

IBM internal - Performance targets for Spectrum Virtualize V7.6 2015 IBM Corporation

#erformance rele(ant features in V%&'

Distri!ute) *+ID ,D*+ID-

Soft.are /ncrption

port 1'3 Fi!re Channel a)apters


3/8

3



D*+ID " (er(ie.

4ra)itional *+ID has a (er ri$i) laout

*+ID"10 6 )ata )ri(es 7 6 mirrors8 spares

*+ID"59' 6 )ata )ri(es 7 # checksum )ri(e ,*+ID"' #7:-8 spares

D*+ID )istri!utes !locks o(er an num!er of )ri(es such that

Spares are (irtualise) an) )istri!ute) across )ri(es

;ost I is !alance) across )ri(es

*e!uil)in$ a faile) )ri(e !alances I across all other )ri(es

D*+ID keeps the same failure protection $uarantees ,6 )ata !locks

plus # ,7:- checksum- !alance) o(er more phsical )ri(es

D*+ID recommen)ation is 0"


4/8

4



D*+ID = #erformance tar$ets

Similar performance on recommen)e) confi$urations to the same

num!er of )ri(es as in tra)itional arras

C#> limite) .orkloa)s ,e$ SSDs8 short I8 fe. arras-

1 D*+ID similar to 1 4*+ID

why: 1 CPU core used per array, V7k v2 CPU has 8 cores

Future (2016): w!! provde "etter !oad "a!a#c#$ per strde

Dri(e limite) .orkloa)s ,e$ 6earline-

1 D*+ID ,6 )ri(es- similar to M 4*+IDs .ith 69M )ri(es each

e$ 1 %&'% (10 drves) s!ar to 2 *&'% (2+ drves)(#e$!ect#$ spares)-


5/8



D*+ID = *e!uil) performance tar$ets

D*+ID re!uil) up to 10 times faster than 4*+ID

?ithout host I + 4B )ri(e can !e re!uilt .ithin @0 minutes for an

arra .i)th of 12< )ri(es

?ith host I if )ri(es are !ein$ utilize) up to 50A8 the re!uil) time

.ill !e 50A slo.er

Benefit o.er pro!a!ilit of secon) )ri(e failin$ )urin$ re!uil) on

recommen)e) confi$urations compare) to 4ra)itional *+ID&

P!a##ed (2016): w!! o#!y re"u!d actua! used capacty o# a drve


6/8

6



Soft.are /ncrption " (er(ie.

/ncrpt )ata on eternal stora$e controllers .9o encrption support

?ill not )ou!le encrpt = use eternal 9 har).are encrption on

= (irtualise) FlashSstems

= stora$e controllers reportin$ encrpte) )isks in SCSI Inuir pa$e C2

= S+S har).are encrption on internal stora$e ,)ri(es- on V%k (28 D;

denis_frank-svc_760_performance_targets.pdf

Documents