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`Page 2 of 13
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`CQ-1101 /IPR2014-01463
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`CQ-1101 / IPR2014-01463
`Page 2 of 13
`
`

`
`US 5,941,972 C1
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`A1,Z.(‘74112./313
`Iixtcrnal RA11}
`llzirdware O1~'.1V1 1\»-lzmiial. RCV1S1{')n 3.0. (1.;i\/ziii 15x 17 (CNS
`17712-1~ 165)) ((1) ROM Cliriparral 15X1111)i1.\i I)()36). Aug.
`25. 19117.
`
`Mcriio1)atcd_\ug. 15. 1997 :0 ARC 73121‘. 1f.*.17:1i.iri1ini*. Uiiii
`("nsuiiiiers re: 13001 Release Notes (Lzivzm 17.x 18 (CNS
`182878 879)) (C1) —R(.1M(‘1iap:u'ra1 llxliilrits 1)(1.'S8).
`Broolilyn Main Board (A1,{.S‘——()302) MES Sclicdule (Lzivzaii
`Ex 19 (CNS 177759— 763)) ((',‘1)~1{O1\/1 C1‘.£:p21I'1‘21l 1:‘x1iibits
`1")(139).1'*‘c1>. 11, 1'~)<)',7.
`N*Ws Re1:'asc——Adap1cc Adds Fibre (‘liaiinel Upiion to its
`External RAID Coiitroller 1’:u11i1y (1_aVan 17.x 20 {(‘NS
`1821)32——934)) ((‘Dr—R()M C‘1i;zp:irra1 17.x11ibi1s D040). May
`6, 1097.
`.»\1,:‘(,‘.—44121%/741211 11.<cr‘s Guicle. Rev. A (1 zivaii Ex 21)
`
`('('1)A1’{()1\/1 C11.::p.':rr:i1 1,i._1ibiIs D041). Jun. 19. 1905.
`Data Book A11” 7895 PC} Bus .\I1as1cr Single (Thip SCSI
`11mi Acizipicr (1)mic.~s Ex 1 {CNS 18294-'1— 64)) (CD ROM
`(jliapzmul ljxliiliits 1')04(>)_. 1\/'12)}! 21, 1996.
`
`Page 3 of 13
`
`
`CQ-1101 /IPR2014-01463
`
`CQ-1101 / IPR2014-01463
`Page 3 of 13
`
`

`
`US 5,941,972 C1
`P21ge 4
`
`Data B0019 —.4\1C— 1160 1?‘ibrc C11;u111e1 I-10st Adapter ASIC
`(L)e11/ies 1;-ix 2 ((,‘NS 181801) 825;) (CD ROM (,'.11a1pz1rrz11
`I1x11ibit.~; DO-17). 11111. 18. 1905.
`(CNS
`3
`Ex
`(_I)a1\v-‘ies
`\»'i1<i11g
`1{;\11,)
`SoI‘t\\«are
`18()969——18IO26))
`(_(‘D—RO1\v1 ("‘11aparr211 1Zx1'1ibi1:< D048).
`11111. 18, 1905.
`IIez1der File with Strtieture Detiiiitiims {Davies Iix -1 (CNS
`180()09——019),) (CD ROM C11z1p:1rr21J Exliibits D049). Aug.
`8, 1996.
`(',‘++ S1.111n:eCoL1e. for the SCSI (‘o111n1z111t1 II2111d1er (1);/wies
`Iix 5 (CNS 179136 168)) (C1) RUM Clizxpztrral Exliibits
`I,)().‘30),Aug. S, 1996.
`(CNS
`6
`Ijx
`(1)aVies
`1'Ie21der
`Fi1e Data Structure
`179997~18()0O8))
`((jI)—ROM Chapzirral Exhibits D1151).
`12111. 2. 1997.
`
`SCSI Ct.~1111nz111d I-1:111d1er (Davies Fx 7 (1 ‘NS 179676 719))
`(Vt/T)——RO1\r‘I ("11'.1p:1rr;11 E{x11ibits D052), .1311. 2, 1997.
`(‘orm1z1t1o: Fibre (‘.11a1111e1 to SCSI 111te11ig,e11t RAID (T011-
`tr011er Product Brief (K211witz 13x 1 (CNS 182804——805))
`(C1,) ROIVI ('hz1pz11'm1 Hxliibits I)053).
`B111
`01‘
`I\/1z1teri:11
`t:1(111\\-'itz Ex 2 (CNS 181632 633))
`t'C1}——I{()1\r1 ('11;1p:1rra1 Iixhibits 1)()54), Mar. 17. 1997.
`1711121115 1,)a1ted Jan.
`13———Mar. 31, 1997 110111 I’. (‘o11i1i.< to M0
`re: Status Repnrts (Kzilwitz
`3 (CNS 182501 511))
`(CD -ROIVI ('11z1p:1rrz11 I7.x11ibit.s D055).
`11arc1ware Schematics for the Fibre (jhauitcl 1)a11g11te1'<:21rd
`Coroiiado (Kztlwitz Ex 4 (CNS 181639r—648)) (CI)—ROM
`(".11:1parr:11 Exliibits 1)(156).
`Atiaptce SCI1€‘11181.1CS
`re AAC 3-10 (1(111witz 17x 14 (‘NS
`17721.5——25I)) ((".I)—R()M (‘11:2parr:11 Iixliibits D057).
`Bridge I’r0t111ct 1i11e Review (Mz1117z111:1res
`1?x 3 (CNS
`177307 336)) (_(§IZ) ROM C11z1p2:1‘r;/11 Iixhibits D058).
`AH,‘ Bridge Series Prutirzcts .»\1I.'1ptec 1?xter11;11 (‘11r11m11e1’
`RAID Products 1"re— —I(e1e;1se Draft. v.6 (Mzmzaiiztres Iix 4
`(CNS 174632——653)). (C1,), R( )M C11z1pz1rr211 1'i.\1111311S 1,)05‘)),
`Oct. 28. 1997.
`I’1ew1e11——1’:1c1<:1r<1 Rtiscville Rite Property 1’r1.s‘s fer Brian
`Smith (Du1111i11g 13.x
`1-1
`(HP 489) (C1)——RO1V'I (‘liaparml
`Ffx11ibi1s D078). Ntiv. 7. 1996.
`I'Ie\\r'1et1— Packard and
`Distribution Agreemciit Betweeii
`(7.1'ossr0;1t1s (Duiming Iix 15 (HP 326 -33) ('("I)—RO1\/1 (,‘11z1p-
`t11‘1‘£11 F.x11ibits D079).
`1ic1iti<>11 {P111
`1"ir.~‘1
`1'I1’I5C 5000 '1'z1c11y1m User’.~‘. 1\/1;111ue1.
`172419 839) (C1) R0111. (‘11z1p:11'12'11 15:<11i13i 3 111184), 1V1:1j~' 1.
`1996.
`I11f111‘111:1111m I1‘ee1111o1<)gy: SCSI 3
`(1f)n.11‘t)
`Xi‘{1‘1(1 99'-11‘)
`.~\1’C11I1CL7lU1"e
`1\/11.11191. Rev. 1.8 (PT1 165977)
`(C1) ROM
`(“11z1p:1rr;11 Iixliibits 11087).
`X3110 I’1'0jeet 10471):
`I111'o1'111:ttio11'1'ee1111<;11c‘1gy- SCSI 3
`(,‘u11tr011er C1'1111111m1<1s (SCC1. Rev. 6e (I"'I'I 166400-546)
`((’1')—rRO1\-‘I ('f11ap;11‘ra1 1,7.x11ibits Ii)()8‘o'). Sup. 3. 1996.
`X3110 9951) —
`(1,)1’211‘t) SCSI 3 I’rin1ary (‘.01111111111t1s, Rev. 1 1
`(Wa11z1111a1<er Ex 5 (PT1 166()5(1——Z29)) (CD R()1\1 Cliapzirral
`L'xI1ibits D089). Nov. 13. 1996.
`VBAR \'0111me 1321ck11p and Rcstere ((,‘1{DS 1220()——2()2)
`(\(71')——ROI'vI (‘11:1p21rr;11 1"iiX1“11-13115 13099).
`Pre1i111ir1211y
`1’r1‘>d11ct Litertttire for
`Infinity Co111i11stor‘s
`Fibre C11z11111e1
`111 SCSI Pmtoeol Bridge (Smith 13x 11;
`Qtiisenberry Ex 31 (SPLU 428 3(1) (£111.)-ROIVI (‘11;1parr;11
`Iixhilaits D143). Aug. 19. 1996.
`Letter dated .1111. 12. 1996 1111111 .1. B0y1<i11 to 13. Smith re:
`1’11re11z1se Order
`1111‘ 17,va1uatio11 Units
`from (‘rossroa(1s‘
`(Smith Ex 24) CRDS 8556 -57)
`(C1)~RDM (‘11e1p11rrz11
`17;xhibits D144).
`
`(f1‘o:<sI’oi11t 4100 I-'ibre (‘11:11111e1 to SCSI Router Pre1i111i11z11'y
`I)z1t:1-:<11ect
`(1I111s:ey 12x 9 (t_‘R1)S 16129—~130))
`t_'t‘.1)—1{()M
`(,'11apz1r1"z11 17jx11ibits D145). Nov. 1, 1996.
`(‘.1’11s:<P11i11t 441111 Fibre (,‘11:1m1c1 to SCSI Ruuter I’re1i111in211y
`D21tas11eet
`(13ztr1121e11
`9. Qttiseriberry Ex 33 t/(‘R138
`25606 607)) (C1,) ROM (,‘11;1pz1rr:11 F.x11ibits D153), Nov. 1.
`1996.
`
`to 13. Smith re:
`1~'u>< 1)21te<1 .1111. 22. 1996 116111 I_. Petti
`I’t1rc11asc Order from Data Getieral
`for F('2S Fibre to
`L711z111ne1 SCSI Protocol Bridge Model
`11
`(S111it11 Ex 25;
`()_uise1i1‘1e1‘1'y 17.x 23; Bz1rdz1e11 Ex 1 1, (CRDS 8552 55; 8558)
`(("I)——1<()1\/I C’11apz11‘1‘a1 I:‘x11ibits D155).
`151112111 Dztted Dec. 20. 1996 from .1. B0_\'1<i11 to 13. Smith re:
`1’11rcI1ase Order for Betas in Feb. 111111 1’vIar.
`(1'I<1esc Fax 16.
`Qrtiseiiberry Ex 25: Bzirdzieli 17.x 12 (_(f‘RDS 13644-650)
`(CD ROM C11z1p;11‘r;11 Exliibits I)15(1).
`Infinity (‘m11111.<tor Fibre (‘11a1111e1 Demo for 132111 (‘1>111dex.
`1996 (110656 Iix 15.
`13ard;1c11 Ex 13 (CRDS 27415)
`((,“1,)— ROM (,‘1111pz1rm1 Iixhibits D157).
`171121 Darted Dec. 19. 1996 110111 B. Bz11‘t1;1e11 111 '1‘. Rarieh re:
`1’111'e1t:1se Order 111ti,»1’111111ir»11 (13211‘d;1c11 18x 14; 81111111 1321 16
`(CRDS -146(1)) t'(,‘1')——1{()I\'I C1]£1],‘1£l1‘1’“d1 Igxhibits D158).
`Mi.<ce1la11eo11s J.)0e111r1e11ts Reg:1rdi11g(.‘o111dex (Qt1isC1‘1be1*ry
`Iix 2 (CRDS 274I5——-165)) ('("I)——R(')1\»1 Cliztparrul 1{§x111’bi1s
`D165).
`("1‘n.<.~:I’r>i11t 4100 Fibre (‘11z11111e1 to SCSI R!)l11CI’ Pre1i11ti112113'
`1)z11:1s11cet (Q11i.<e11berry) I-71;
`.3 (CRDS 4933 34) (("1)
`1{()I\—1
`(.'11up:1rra1 1{x11ibi1s D166) (CD ROM (_‘11L1p:11'rz11
`1€x’11ibi1:»:
`U166).
`(i'ros.x'I’oi11t -14-()0 17‘ib1'e to ("11:11111e1 tn SCSI Rm1te1' I’re1i111i»
`nary I)ut21::11eet:
`(i'r0sRr1md::
`("(>n1p.;111y rind 1’11'»c111t:t' ()ver~
`VIOW (Qitiseitberry Ii); 4 (('1{1)S 25606: 16136)) t(‘I')——RO1\/I
`(_"h11p:1rr:11 1'£x11ibits 1)1(>7).
`Crossroads Purciizise Order Ing (Q11i;~;e1‘.berry EX 9 ((,‘RI)S
`14061r—062)) (C1) —R(i)M Ciiaparrnl Exhibits D172).
`RAID 1\/Iaimger 5 with R1).-31C 5 for UNIX \-'.-'1 User’s Guide
`(LS1 01854) ((31) R()1\I‘I (‘11:1pz1rr;11 I?>;11ibits P062). Sep. 1,
`1996.
`
`Iettcr dated 1\‘I:1y 12, 1997 fmin .'\1a11 G. 1,e211 to Bairbztm
`13z1rd:1e11 e11c1osing the 01‘1gIHL!1 OEM License and 1’U1'C11:1SC
`Agreeriieizt betweeii I'Iew1ett—1’2:ck:—1g,c Coiripziirjr and {,'ro.»s—
`roads Systeiris. Inc. {CR138 C12057) ((C‘.1)—1<l1’,)E\*I Ciiapatrrzti
`Exhibits P130).
`(‘Rx=100 Product Speeiticzxtiorr (CRDS —1392‘.)) ((1) ROM
`(T11z1pa1‘rz11 Iixhibits P267). .11111. 1. 1998.
`S}"I111‘.1t)S 1',.«>gie———I1;1rdwz1re 171111etin11a1 Speeitiezttitm Ibr the
`Syrriliios Logic Series 3 Fibre C11a1111e1 Disk Arrzty (‘.n11tm1-
`Ier
`1V1o1,1e1
`3701
`1.:E11gc1111‘ee11t
`17.x
`3
`(I.\‘I——1659—1733)
`(C1)——R()1.\"1_ I’z1t111ig11t Ijxhibite 1)()74).
`Report 111‘ the Working ('}ro11p 1:111 Storage 1/O 1b1'I,21rgc SC;11££
`Coriiputiiig: Depztrtmerit 1,11’ (‘t1111put:*r Scieiice Duke Uni-
`versity: (‘S 199621 (PT1 173330 347). (FD RUM P11111-
`Iighl 17}x11ibit3 I')U9.‘a’}.
`Rrizm /\11is<111‘s 1999 '111ird Quarter Sa1cs Plan (PDX 38)
`CNS 022120 132)) (CD ROM Pz1tI11ig.ht Iixhibits D201).
`11111. 5. 2001.
`
`111te11ige11t F,xter11a1 RAID Bridge
`Bruok1y11 S(.'S1——S(‘S1
`1)eti11itiDr1 1"11:1.<e 1€x1c1'11.':1
`1)0c11111e11t:1ti1'111 ((1) ROM P3111»
`1ig.11t Pxliibits D129).
`
`*1 eited by C‘X£l1I11I1e1‘
`
`Page 4 of 13
`
`
`CQ-1101 /IPR2014-01463
`
`CQ-1101 / IPR2014-01463
`Page 4 of 13
`
`

`
`US 5,941,972 C1
`
`1
`Ex PARTE
`
`2
`AS A m=:\:1:1'1' or RmsxAM1N.xHoN.
`
`IT HAS RFFN
`
`REEXAM INATION CERTIFICATE
`ISSUED UNDER 35 U.S.C. 307
`
`NO ;\M[—ENI)M1{N’1'S 11A\/13 BEEN !_\wj>}=:'1‘<>
`'1‘H}«i P,\’l‘I-LN!"
`
`"””‘?R“"‘“““D '1 1 W‘
`
`The paicnfabilily ofclaims 1-14 is cnnfirnwd.
`
`+
`
`=:«
`
`Page 5 of 13
`
`
`CQ-1101 /IPR2014-01463
`
`CQ-1101 / IPR2014-01463
`Page 5 of 13
`
`

`
`HlllllllllllltillllllllllllililIllilllllllllllliiiilllllflllillillllillli
`US0059-H 972A
`
`United SEZIEBS Patent
`
`[191
`
`[11] Patent Number:
`
`5,941,972
`
`House ct 31.
`
`945} Date of Patent:
`
`Aug. 24, 1999
`
`I’rimnrv l;‘.\'az;2ii1ui'—(‘hristo whcr B. Shin
`'
`I
`A((:)r:zaj;1_'§_g;crt!, or I‘1'n7z——{3i";ty C1l1‘_V Wan & Ficidcnrich,
`HP
`
`E57}
`
`A351‘RA(;'1‘
`
`A storage router (56) and stomgc network (50!) pmvidc
`Virtual local sturtive on remote. SCSI storage dwiccs (M). 62,
`64) to Fiber (,‘h2i:[}Ci devices. A pitnality of Eiiiyzzr Chztimci
`dcvicus. such as wurkstatmns (58), are ctmncctcd to El Fiber
`Chzmncl
`transport medium (52), and a ph:r:tlt't,y of SCSI
`stoiaigc d<:V'iCcs (60, 62. 64) are contricctcd to 3. SCSI bus
`tr;m.<pm‘t incdiurn (54). The smrzigcs mutcr (56) itttcrfuucs
`between 111: Fiber Channel transport medium (52) and the
`SL755! bus transport medium (54). The sturagc router (56)
`maps bt;1\V‘t3c;11 the wurkstzitimis (58) and the SCSI mtoragc
`dc\'iC»:S (60, 62, 64) and implements access cmitrols; for
`storagc space on the SCSI storzxgc ds:vicc.<. (60, 62. 64). The
`S‘RJI£1g,C router (56) then allmvs access {min the woikstatimis
`(58) to the SCSI sturztgc (lcviccs (60, 62, 64) using mttivc
`low level, block pmtociil in ztccordztncc with the inarpitté
`and the access cmitrols.
`
`14 Claims, 2 Drawing Sheets
`
`54
`
`ST()l{»\GF, ROUTlf.R AND ME'[‘H()D 1’OR
`—\
`I
`«
`V‘
`r
`.
`1’ROV”)[N(§ Vnn U-‘KL L0Cr\L SIURAGIS
`
`75]
`
`Iiivemors:
`
`(.‘e0fi"re_v B. Hm-50, Austin; Jeffry '1".
`Russell, Cibc.-lo, both of Tux.
`
`73] Acstgiicc:
`
`(_‘mss;m2ids Systems, Inc., Austin, Tcx.
`
`21] App}. Nu: ($9/'0t)l,799
`,‘
`_
`Dec‘ 31’ 1997
`“'2;
`I'M"
`51]
`Int, CL” ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ._ C0614‘ I3/(K)
`53]
`[15, CL ____________________________ N 7}0/139; 710/138; 710/3
`I55}
`piem nf _s;¢_.m«ch
`......................... __ 710,,-IE3’ 1(}(E,[()1’
`7m;1_7_()..13,1
`
`56]
`
`References Cited
`US. 1’AT[;NT DOCUMENTS
`
`3")5€3f'1‘1
`~ 3”-"357
`395x825
`. 3‘}5,"l8'2..U4
`.. 37(",|/51-»l
`5%/zttk)
`
`
`
`5.’19‘”$ H<>‘i€nS cl 33‘
`5"1"”3 “dd 0‘ ""~
`‘),'1‘)‘)8 Nogalcs ct 31.
`..
`Q,'I‘N.‘§
`fui 61 al.
`AH
`l3l‘)‘§8 Young C19},
`JJMNS i.umcIin«'.w at al.
`
`5.74?5.-“I4
`5~7‘33=(‘35
`5.8U‘),328
`5.8! 9 7541-
` ;
`5.,8<t8.251
`
`
`
` STORAGE DEVICE
`
`
`
`-G
`
`FIBRE
`CHANNEL
`
`
`
`
`
`
`
`X
`%RAct:
`ROUTER
`
` MANAGEMENT
`STATION
`_
`_ WORKSTATEON
`
`’
`C STORAGE E
`
`WORKSTATION
`I D STORAGE I
`
`
`
`WORKSTATION
`E A STORAGE
`
`54
`
`woaxswtou
`B STORAGE
`
`‘7o
`
` 72
`
`
`
`
`
`
`
`STORAGE DB/ICE
`
`64—
`
`WORKSTAHON
`E STORAGE
`
`74
`
`58
`
`Page 6 of 13
`
`
`CQ-1101 /IPR2014-01463
`
`CQ-1101 / IPR2014-01463
`Page 6 of 13
`
`

`
`U.S. Patent
`
`Aug.24, 1999
`
`Sheet 1 of2
`
`5,941,972
`
`12
`\
`I WORKSTATION I
`
`12
`_\
`I WORKSTATION I
`
`I3
`
` WORKSTATION
`
`10
`
`
`
`WORKSTATION
`A
`
`
`
`
`
`
`
`58
`
`58
`
`72
`
`50
`FIG_ 3
`
`WORKSTATION
`E STORAGE
`
`74
`
`Page 7 of 13
`
`
`CQ-1101 /IPR2014-01463
`
`TO FIBRE
`CHANNEL
`MANAGEMENT
`
`sr/mow
`W 70
`
`
` WORKSTATTTON
`
`0
`
`WORKSTATION
`V
`E
`
`CQ-1101 / IPR2014-01463
`Page 7 of 13
`
`

`
`US. Patent
`
`Aug. 24, 1999
`
`Sheet 2 of 2
`
`5,941,972
`
`%m_>5%m
`
`5.305200mom
`
`585%SE52”
`mum$25<3
`
`
`
`m..:._oEz8dzzsamam:
`
`$5
`
`ma$§z_
`
`em
`
`5080”;8
`
`dzzéomam:
`
`mom_>$%m
`
`ozmmwea
`
`._Etam
`
`_
`
`CQ-1101 /IPR2014-01463
`
`Page 8 of 13
`
`CQ-1101 / IPR2014-01463
`Page 8 of 13
`
`
`
`
`
`

`
`5,94l 972
`
`I
`S'I‘()RA(lIi ROLITER AND MI'TI‘Ht)D FUR
`PROV’II)IN(§ VIRTUAL LOCAL STORAGE
`
`TILCIINICAI. FIILLD OI" IIIIL INV TION
`
`2
`
`" space on the SCSI
`implements access controls for stor:
`storage devices. The storage route r then allows access from
`the workstzttions to the SCSI storage devices using native
`low level, block protocol in zrccordzmce with the mapping
`and the access controls.
`
`in
`
`I‘?
`
`invention,
`According to another aspect of the present
`
`virtual
`local storage on remote SCSI storage devi
`'5 is
`provided to Fibre Channel devices. A Fibre Channel lf£tllS-
`port medium and st SCSI bus transport medium are inter-
`faced With. A config,uration is mztinmined for SCSI storage
`devices connected to the SCSI bus transport medium. 'l‘lie
`configuration maps between Fibre Channel devices and the
`SCSI storage devices and implements access controls for
`storage space on the SCSI storage devices. Access is then
`allowed from Fibre Channel initiator devices to SCSI stor-
`age devices using native lovv level, block protocol in accor-
`dance with the contigtiration.
`invention is the
`A technical zxdvantagc of the present
`’ abilityto centralize local storage for networked worlzstations
`V
`ii‘ without any cost of speed or overliutd. Each \vorl<station
`access its virtual local storage RS if it work locally con-
`nected. Further,
`the eentrztlized storage devices can be
`located in at significantly remote position even in excess of
`ten kilometers as defined by Fibre Chtmnel standards.
`Another tcclinieal advantage of the present invr;-ntion is
`the ability to centrally control and ztdmioister storage space
`for connected users without limiting the speed with which
`
`the users can zicc
`local dzttzi. In addition. global zicccss to
`data, backups, virus scanning and redundancy can he more
`easily accomplished by centrztlly located storage devices.
`A Further technical advantage of the present invention is
`providing support For SCSI storage devices as local storage
`for I’ihre (fhanncl hosts. In ttdditiori, the present invention
`helps to provide extended capabilities for Fibre Chanriel and
`for inaiiageincnt of storage. sttbsysterns.
`BRIEF l)ESCl{IP'I'lON OI? Till}, DRAWINGS
`
`r4in
`
`’a~/C;
`
`to network strireige
`lltis invention relates in generztl
`
`dev
`and more particnlzsrly to a storage router and
`method for providing virtual local storage on remote SCSI
`storage devices to Fibre Channel devices.
`
`BACl((}l{(')UND 017 THIS lNVl;‘NTI()N
`
`illvpical storage trttnsport mediums provide for u relatively
`small number of devices to be attztchecl over relatively short
`distzinces. One such transport medium is 21 Small Computer
`System Interface (SCSI) protocol, the structure and opera-
`tion of which is generally well known as is described, for
`exarnple, in the SCSl—1, SCSI-2 and SCSI-3 specilic:ition.s.
`High speed serial interconnects provide enhanced cztpttbility
`to attach 21 large number of higli speed devices to it common
`storage transport medium over large distant: 5. One such
`scrial interconnect is Iiibrc (hztrinel, the structure and opera-
`tion of which is described, for example, in Fibre C/ztmncl
`I ‘/zv.\.'r‘uri1 and Sig/‘ruling Ir1I(«‘7j,"r/cc (_FC—l’H), ANSI X3230
`Iilibre Clm/Incl Arbitrateri Loop (_FC-AL), and ANSI X3272
`Fibre C/lr’1ilI’l£’l [’i't'mte Loop Dii‘C’t"l' /ttmr/1 (l5C—I’Ll_‘IA).
`Conventional computing devices, such L135 computer
`workstrttions, generally access storage locally or throng!)
`networlc interconnects. Local storage typically consists of st
`
`disk drive,
`tape. drive, CD-ROM drive or other stor
`device contained within, or locally connected to the work-
`station. The workstation provides :1 tile system structure, that
`includes secttrity controls, with access to the local stor;i<_;e
`device through native low level, hlocl; protocols. These
`protocols map directly to the ineclmiisiiis used by the
`st<:ir;tg,e device and consist of data requests without security
`controls. Network interconnects typically provide access for
`at large number ot‘ computing devices to data storage on a
`remote network server. The remote network server provides
`tile systcin structure, access control, and other miscellaneous
`capabilities that include the network interface. Access to
`data through the network server is tlirough ttetwork proto-
`cols that the server must translate into low level requests to
`the storage device. A worlrstrttion with access to the server
`storage rnust translate its file system protocols into network
`protocols that are used to corntttttnicntc with the server.
`Coitseqticntly, froth the perspective of :t workstation, or
`other computing, device, sccl-ting, to access such server d:it:i,
`the 2tL.'C(i is is much slower than access to data on it
`local
`storage device.
`
`SUMMARY OI“ lllllli INV '\"I‘l()N
`
`A more complete undcrstantling of the present invention
`and the zirlvantagcs thereof may be (required by referring, to
`the following description taken in conjunction with the
`accotnpanying drawings._ in which like reference numbers
`indicate like fczttures, ZlI](l wltcrein:
`HG. I is a block diztgrain of at conventional network that
`provides storage through :1 network server;
`l7‘I('}. 2 is Fl block tliztgrtnn ofonc embodiment of it storaoe
`t‘rcl,W«'.)tl{ with a storage router that provides global access
`Illl(l routing;
`MG. 3 is at block diagratn of one enibodirncnt of a storage
`network with :2 storage router that provides virtual
`local
`storage;
`FIG. 4 is 2! block dizrgrettn of one embodiment of the
`storage router of Ht}. 3; and
`I7lC:. 5 is a block diagratn of one CII‘il‘,Ut'llITl€I)I otdata flow
`within the storage router of FIG. 4.
`l)lLTAlI.liD I)ESCRII’TI()N 015 THE
`INVENTION
`
`I is (1 block tliagratn ol :1 conventional networlr,
`FIG.
`indicated s_:ener:tll_v at 10, that provides access to storage
`through :1 network server. As shown, network 10 includes 3,
`plurality of workstations 12 interconnected with a network
`server 14 V’l£l a network tran.~;port rnediurn I6. littch work-
`station I2 can t’CH€l’£tll_\;‘ comprise 21 processor, memory,
`inputoutput devices, storage devices and a network adapter
`as well (18 other common computer components. Network
`
`In ziccordancc with the present invention, it storage router
`.':ttl(l method for providing, virtual
`local sttiriige on remote
`SCSI storage devices to Fibre Channel devices are disclosed
`that provide advantages over conventional nettvork storage
`devices and methods.
`
`n'n
`
`a
`invention.
`to one aspect of the present
`According,
`storage router and storatic network provide virtual
`local
`storage on retnote SCSI storage devices to Fibre (‘hannel
`devices. A pltrrality of liibrc Channel devices, such as
`workstations, are connected to 2:} Fibre Channel transport
`medium, and Lt plurality of SCSI storage devices £U'C con-
`nected to it SCSI bus transport medium. The storage router
`interfaces between the liibre (jh:inncl tr:rnsport medium and
`tlie SCSI bus transport medium. The storage router maps
`between the workstations and the SCSI storage devices and
`
`Page 9 of 13
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`
`CQ-1101 /IPR2014-01463
`
`CQ-1101 / IPR2014-01463
`Page 9 of 13
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`

`
`5,941,972
`
`4
`According to the present invention, storage router 56 has
`enhanced furrctionality to implement security controls and
`routing such that each Workstation 5.8 can have access to a
`specitlc subset of the overall data stored in storage devices
`60, 62 and 64. This spccitic suhsct of data has the appcar:trice
`and characteristics ol‘ local storage and is relferrcd to herein
`as virtual local storage. Storage router 56 allows the con-
`figuration and modification of the storage allocated to each
`attached vvorkstatirirt 58 through the use of mapping, tables
`or other mapping tecliniques.
`As showit in FIG. 3, for cxanrple, stt_>rag,e device 60 can
`be coriligurcd to provide global data 65 which can he
`accessed by all Workstations 58. Storage device 62 can he
`configured to provide partitioned suhsc-ts 66, 68, 70 and 72,
`where each partition is allocated to one of the workstatioiis
`58 (workstations A, I3, (7 and D). These subsets 66, 68, 70
`and 72 can only be LICLL
`ed bv the assocrited workstation
`58 and appear to the associated workstation 58 as local
`storage accessed using native low level, hloclc protocols.
`Similarly, storage device 64 can be allocated as storage for
`the remaining workstation 58 (\vorl<statiotr E).
`Storage router 56 combines access control with routing
`such that each workstatiorr 58 has controlled access to only
`the specified partition of storage device 62 which forms
`virtual local storage for the workstation 58. This access
`control allows security control for the specitied data parti~
`tions. Storage router 56 allows this allocation of storage
`devices 60, 62 and 64 to be iiiaiiagecl by a nianagentent
`station 76. Management station 76 cart connect directly to
`storage routcr 56 via a direct connection or, altermrtely, can
`interface with storage router 56 through either Fihre Channe.l
`52 or SCSI bus 54. In the latter cas