Manuale d’uso / di manutenzione del prodotto XP12000 del fabbricante HP (Hewlett-Packard)
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HP S tor age W orks Busine ss C o p y XP u ser gui de f or the XP1 2000/XP1 0000/S VS200 Pa r t n u m b e r : T 1 7 1 3 - 9 6 0 07 F ifth edition: Marc h 200 7.
Legal and notice information © Cop yr ight 1 9 99 , 200 7 Hew lett-P ac kar d De velopment C ompan y , L.P . Con fi dential compute r softwar e. V alid li cense fr om HP r equired f or posse ssion , use or cop ying . Consistent w ith F A R 1 2.2 1 1 and 1 2 .
Co nt e n t s A b o u t t h i s g u i d e ................ .......... 7 I n t e n d e d a u d i e n c e ................ .................. .... 7 P r e r e q u i s i t e s ............... .................. ....... 7 R e l a t e d d o c u m e n t a t i o n .
S t a r t i n g B C .................. .................. .... 5 2 B C m a i n s c r e e n .............. .................. .... 5 3 V o l u m e l i s t .................... ................ 5 5 D e t a i l w i n d o w ......................... .....
Fi g u r e s 1 .. B C o v e r v i e w ............. .................. ... 1 2 2 .. A d d i n g a p a i r i n B C ............... ............... 2 2 3 .. Update cop y o p e r a t i o n .................... ......... 2 3 4 .. N o r m a l a n d q u i c k p a i r r e s y n c o p e r a t i o n s .
Ta b l e s 1 .. D o c u m e n t c o n v e n t i o n s .............. ................. 8 2 .. B C o p e r a t i o n a l r e q u i r e m e n t s f o r t h e a r r a y .................... . 1 4 3 .. T o t a l n u m b e r o f d i f f e r e n t i a l t a b l e s p e r p a i r .
About t his guide This guide pr ov ides inf ormation about: • using Busine ss Cop y XP operati ons • pr eparing Bus iness Cop y XP oper ations • starting Busine ss Cop y XP operati ons • perfo.
Doc ument con v en ti ons and s y mbols T able 1 Document c on v entio ns Conv ention Element Blue te xt: T able 1 Cr oss- re fer ence l inks and e-mail addr esses Blue , underlined te xt: ht tp://ww w .
• Deta iled qu estions Sub sc r ipti on s ervi ce HP r ecommends t h a ty o u r e g i s t e ry o u rp r o d u c ta tt h eS u b s c r i b e r ' sC h o i c ef o rB u s i n e s sw e b s i t e : h ttp:/ /ww w .
10 About t his gu ide.
1 B usines s C op y XP (BC) f or t he A rray H PS t o r a g e W o r k sB u s i n e s sC o p yX P ( B C )m a i n t a i n si n t e r n a lc o p i e so fu s e rd a t ao nd i s ka r r a y sf o r purpos es such as data bac k up or dupli cation . Dupli cate volumes are cr eated on the same disk arr ay as the pr imary volume at har dw are s peeds.
Fig ure 1 BC overvi ew Use BC f r om the Command V ie w XP management s tati on or XP Re mote W eb Console t o make local copies of v olumes. The v olume that has original data is called a P-V OL (primary volume) , and a volume to whi ch data is cop ied is called an S-V OL (secondary volume).
differ ential data in the P-V OL (due to P-VOL and S-V OL updates) is copied to the S-VOL, so the S-VOL is again identi cal to the P-V OL. F or re ver se r es ync , the differ enti al data in the S-V OL (due to P-V OL and S-V OL updates) is copi ed to the P-V OL, so the P-V OL is no w identi cal to the S-V OL.
T able 2 BC operational requirements for the arra y Pa r a m e t e r Req uire me nt P air objects Logi cal devi ce s (LDEVs): O PEN-x (suc h as OPEN-3, OPEN-9 , OPEN-E , and OPEN-V), inclu ding CVS and LU SE vo lumes. Dev ices m ust be installed and con fi gured .
Pa r a m e t e r Requirement Phy sical de vice (P DEV) maintenance Maintenance of a P DEV that is not use d by BC does not aff ect BC oper ations or the status of BC pair s. If a P DEV contains LDEVs used by BC, y ou can maintain that PDE V independentl y of the BC oper ations and pair s tatus .
• Hitachi F lashCopy Mirr oring ver sion 2 • Fl ex C o py X P • Auto LUN XP • Snapsho t XP F or more inf ormation , ref er to the follo wing doc uments: • F or Shado wImage for z/OS , Hitac .
T able 3 T otal numb er of dif fer ential t ables per p air Emulation type Equation OPEN-3 OPEN-8 OPEN-9 OPEN-E OPEN-L T otal number of differ ential tables per pair = [(X ÷ 48) + (Y x 1 5)] ÷ Z •.
T able 5 Re lation ship be twee n emulati on type, c apacity , and diffe rent ial table s Emulation type Capacity 1 Dif ferential tables per pair OPEN-3 Does not depend on capacity 1 Up to 2 .7GB 1 Up to 5. 5GB 2 OPEN-9 Up to 6.8GB 3 Up to 2 .7GB 1 Up to 5.
Capacity 1 Differ en- tial tables Capac ity 1 Differen- tial tables Capacit y 1 Diffe ren- tial tables Up to 344.2GB 23 U p t o 823. 2 G B 55 Up to 1 ,30 2 .2 GB 8 7 Up to 3 5 9 .2GB 24 Up to 8 38.2GB 5 6 Up to 1 ,3 1 7 .2GB 88 Up to 3 7 4.2GB 25 U p t o 853.
Capacity 1 Differen- tial tables Capac ity 1 Differen- tial tabl es Capac ity 1 Differen- tial tables Up to 1 ,8 5 6. 1GB 12 4 Up to 2 ,3 50. 0GB 15 7 Up to 2 ,844. 0GB 19 0 U p t o 1 ,87 1 .0G B 1 25 U p t o 2,36 5.0 G B 1 58 U p t o 2,85 9 . 0 G B 1 9 1 Up to 1 ,8 86 .
•( Β ) = 30, 7 1 8 when additional shar ed memory for diff eren tial tables i s installed. F or e xample , if y ou cr eate 1 0 pairs of L U SE volumes consisting of three OPEN-3 v olumes, use the f.
Befor e the initial copy oper ation , the status of a pair is SMP L. T he status of the pair i s COP Y(PD) (PD = pending) whi le the initial copy oper ation is in pr ogr ess.
CA UT ION: Even if a copy oper ation is completed without an y host I/O, the data in the P-V OL and S -V OL may not b ei d e n t i c a l . W h e t h e rt h eP - V O L a n dt h eS - V O Lh a v et h es a m ed a t ad e p e n d so nt h ec o n d i t i o no f t h e disk ar r ay .
new pair , all P-V O L data is copi ed to the S-V OL. When the split operati on is complete , the pair status changes t o PS U S, and y ou hav e full r e ad/wr ite acce ss to the split S-V O L (e ven though it is still r eserved).
F or w ar d pair r e syn c o p e ra t i o n A forw ard pair r es y nc oper ation r es ync hr oni z es pairs b y copy ing data on P-VOLs to S-V O Ls. The f ollo wing ar e the types o f f orwar d pairr es ync oper ations: • Normal .T h i s o p e r a t i o n ( s e e Fi g u r e 4 ) r es ync hr oni z es the S-V OL with the P -VOL .
• Reverse . This oper ation (s ee Fi g u re 5 ) sy nchr oni zes t he P-VO L with the S- VOL . T he copy dir ection for a rev erse p airres ync op eration i s S-VOL to P -VOL. T able 7 shows the r equire ments for re v erse and quic k res tor e pairr es ync oper ations.
Figure 5 R e ver se and quic k restor e pair operations NO TE: T h eP - V O Lr e m a i n sr e a d - e n a b l e dd u r i n gt h eq u i c kr e s t o r eo p e r a t i o n o n l yt oe n a b l et h eh o s tt or e c o g n i z e the volume .
2. Because Cache L UN settings are e xc hanged during a quic k res tor e operati on, y ou must perf orm one of the f ollo wing oper ati ons. If y ou do not , the change of location of cache r esi dence areas may c a u s eI / Op e r f o r m a n c et ot h eC a c h eL U N d a t at o b ed o w n .
F i g u r e 6B CP - V O Lf o r m i n gp a i rw i t hC o n t i n u o u sA c c e s sX PS - V O La n de x t e r n a lS - V O L , res pec tivel y Fig ure 7 B C P-V OL form in g pa ir wi th extern al S -V .
status c hanges to P AIR. T he disk arr ay r esumes BC u pdate copy oper ations after the pair status c hanges to P AIR. T he P-VOL r emains f ully accessible dur ing a normal pair re sy nc oper ation , but becomes inaccessible to all hos ts during a r e ver se or qui ck r estor e pa irr es y nc oper ation .
Use the P airs plit-E w indow to s uspend BC pairs . When a pair is sus pended, the s tatus c hanges to P SUE . When the pairr es ync oper ation starts, the pair status c hanges to COP Y(R S) . The P-V OL remains f ully accessible w hile suspended and during the pair r esy nc oper ation.
Figure 1 1 Q uick Restore operation wit h or without Sw ap&Freeze option The Quic k Res tor e pairr es ync oper ation on a pair with st atus of P S US e xc hanges data in the pair's P-VOL and S-VOL .
F or L ev el 1 (L1 ) pairs, the r oot volume could ha ve MU=0, MU=1 , and MU=2 . For L1 pairs, the assoc i ated S-VOLs all have MU=0 bec ause this is the fi rst pair of w hic h they ar e a member . F or the L ev el 2 (L2) pair s, the L1 S-V OLs ar e no w all acting as L2 P-V OLs.
NO TE: • Combining L1 and L2 p airs w ith Continuous Access XP volumes is allo wed; how ev er , Continuou s A c c e s sX Pc o n s i d e r sn o d ea n dl e a fv o l u m e sa ss e c o n d a r yv o l u m e s( S - V O L s ) .
T able 1 0 Re lations hip betw een L 2 pair stat us and L1 p air o perat ions L1 P air Operations L2 P air Status Pa i r c r e a t e Pa i r s p l i t Pa i r r e s y n c Reverse/ Qui ck Restore Pa i r .
T able 1 2 Read/write operation (host to the leaf v olume) and L2 pair status L2 P air Status COP Y PA I R COP Y(SP) PSUS( SP )/ PSUS CO P Y(RS) PS UE Rea d O nly Rea d O nly Rea d O nl y Rea d /Write Read Only Read Onl y At-T ime S plit functi on In the past , a BC pair gr oup split e ach L UN pair in the gr oup at a sli ghtly diff er ent time .
Figure 1 3 Overview of At -Time Split fun ctio n Enabling the At-T ime Split func tion u sing R AID Manager 1. Create BC At-Time Split pairs as follo ws: a. De fi ne a consist ency group f or BC pairs . Y ou cannot de fi ne L1 and L2 cascade pairs (see Cascade f unction ) shar ing the same node v olume in a consis tency gr oup .
NO TE: Aft er the pai rsp lit , r espons e time of t he fi rst I/O to ea ch lo gica l un it ( L U) c an b e up to app ro ximat ely fi ve se co nd s in t he wo rst c ase. Thi s wors t ca se s hou l d be i n a on e -to -t hre e BC p ai r si t ua tio n an d 36 LDEV L USE co n fi gur ati on .
4. The f ollo wi ng are the ty pes of pair s tatus (P S US and P SUE) when the pair is not s y nchr oni z ed: • When you s plit a pair (pairsplit), the p air status c hanges to COP Y(SP) or P SU S(SP) for qui c k pairsplit . Duri ng the pairsplit pr oces s, the pair statu s becomes COP Y(SP).
T abl e 1 3 BC pair s tatus con ditions P air Status Desc ription S-V OL Access SMPL The vol um e is n o t assigned to a BC pair . The disk arra y accepts r ead and wr ite I/Os for all SMPL vo lumes that ar e not r eserve d. N/A (there is no S-V OL yet).
NO TE: If the shar ed m emory is v olatili zed w hen yo u sw itch o n the pow er su ppl y again , the pair in the COP Y(SP) or PSUS(SP) status c hanges to PSUE .
• Command V ie w XP management s tati on (us er-suppl ied Wi ndo ws-ba sed PC) or X P Remot e We b C o n s o l e . • BC license k e y installed . Pr epar ing for B C operati ons T o ensure that y .
Comb ining BC w it h other data ma nagement operations BC supports con cur r ent operati ons with the fo llow ing data management func tions: • L U Size Expansion (L USE) . L USE volumes can be ass igned to BC pairs if the P-V O L and S-V OL hav e the same L U type and n umber of LDEVs (same siz e) .
BC and Continuous Access XP Journal can functi on together in the same Local disk arr ay to pr ov ide both internal and r emote back up for y our important data . NO TE: • A primary vo lume (P- V OL) of Continuou s Access XP Journal means a primary data volume of Continuous A ccess XP Journal .
Figure 1 6 BC and C ontinuous Acce ss XP Journal: Shared P - V OL and S - V OL Fi g u r e 1 7 is an ex ample of a volume that func tions as both a Continuou s Access XP Journal P-V O L and a BC P-V OL, w hile the S-V OL of the same Con tinuous A ccess XP Jour nal pair also functi ons as the P-V OL of another BC pair .
Comb ining BC an d Continuous Access XP oper ations BC and Continuo us Acces s XP can functi on together in the same disk arra y to pr o vide both inte rnal and r emo te bac ku p for important data . NO TE: • BC is r ecommended f or intr a-disk arr ay cop y oper atio ns.
Figure 1 9 BC and Continuous Access XP: shared P - V OL/S - V OL CA UT ION: When you shar eaB CP - V O Lw i t haC o n t i n u o u sA c c e s sX PS - V O La ss h o w ni n Fi g u r e 1 9 ,t h ew r i t e operati on to the Continuous Acces s XP P-VOL takes time.
Figure 2 1 BC an d Continuous Access XP: shared S - V OL/P- VOL Usually C ontinuous A ccess XP and Continuous A ccess XP Jour nal can share v olumes w ith BC. Ho we v er , in some cases , you cannot c r eate BC pairs using v olumes shar ed with Con tinuous A ccess XP and Continuous Access X P Journa l.
Figur e 23 BC, Continuous Access XP , and C ontinuou s Access XP Jour nal: Shar ed S -VO L / P -VO L / S -VO L Com bin in g B C with L UN Sec ur ity XP Extension BC can creat e pairs using v olumes for w hich L UN Secur ity XP Extension sets the access attr ibute .
T ab le 1 7 VMA set ting a nd availab ility of Paircreate o perati on S-VOL P-V OL V olume without VMA V olume with VMA Vo l u m e w i t h o u t VMA OK NO Vo l u m e w i t h V M A NO OK NO TE: Y ou can specify a volume with VMA as a reserv e volume.
CA UT ION: Because the S-V O L's access attribute is c hanged after copy ing the P-V OL's access attribute , be car eful a b o u ta c c e s sa t t r i b u t e so fv o l u m e st ob es p e c i fi ed as BC pair s.
Y ou can also copy access attr ibutes of cas caded pairs. Fi g u re 25 show s the r equir ed licens e capac ity of L UN Sec ur ity XP Extension when y ou c re ate cascaded pairs u sing volumes w ith VMAs and access attr ibut es .
Figure 26 BC m ain s cree n Y ou can now perfor m BC operati ons. Y ou fi rst need to reserve the volum es you plan to use as BC S-V OLs (see Setting res erve attribute s for ins tructi ons). Y ou can then s tart adding BC pairs (see Creating B C pairs (P a ir cr eate) f or instruc tions).
NO TE: Yo u c a n fi lter vo lumes or volume pairs displa yed in the V olume list on t he upper-ri ght side of t he Displa y tab b y selecting a port, host gr oup , or v olume (P-VOL). T o display all volumes and pairs, select Po r t ( Subsy stem ) at the top o f the T ree V iew bo x.
NO TE: The value (X) does not in clude Auto L UN XP , Fle x Copy , Snaps hot XP , Hitachi F lash Copy Mirr or ing, or Hi tac hi F lashCo py Mirr or in g V ersi on 2 pair s. If the se pair s ex is t , BC pair cr eate ope r ati ons ma y f a i l ,e v e nw h e n( X )i sl e s st h a n8 , 1 9 1 .
Fig ure 27 V olu me l ist The V olume list contains all inst alled volumes (L Us) on the selected port and display s the foll ow ing infor mation f or each v olume: • Po r t : P or t ID ( clust er an d cha nn el nu mb er) of each volu me. If L 2 pa irs exist, a di fferent ic on display s .
Y ou can perfor m BC operati ons for v olumes in the V olume list by using the f ollo wing shortc ut menu commands (see also Ta b l e 2 1 ): • Detail : Display s pair status f or selected v olumes/pairs. • Pa i r c r e a t e : Cre ates or adds new BC pair s.
Fig ure 28 D eta il wi nd ow S-V ol P ath w indow This win do w display s inf ormation on the s elected pair (all paths de fi ned f or the S-VOL). T o open the S-V ol P ath windo w , selec t one or more pair s in the V olume list , righ t-cli ck , and select S-V ol P at h .
Display F ilter wi n d ow Thi s wi nd ow fi lt ers volumes displa yed in the V olum e list b y rese r v e at tri bute, pair condition , and pair status . T o open the Display F ilte r windo w , cli ck Disp lay F ilter on the BC main screen , or select an y pair or volume in the V olume list , right-c lic k, and select Displa y Filter .
• Pa i r S t a t u s : • BC : Displa ys or hide s BC pairs. • Snapshot XP : Displa ys or hi des Snapshot XP pair s. NO TE: If a ch eck b ox is no t sele cte d, all ch eck b oxes in ea ch tab a re gray e d out. • BC : Chec k box es f or the pair statuses ar e a vailable onl y when y ou select the Pa i r che ck b ox i n th e Attribute bo x .
NO TE: An LD EV num ber end ing with # (for e x amp le , 00: 0 1 # ) indicates the LDEV is an external volume . • Pa c e : Cop y pace for all pairs being c r eated: Slow er , Med i um ,a n d Fa st e r .F o r m o r e i n f o r m a t i o n about what a ppears if you s elect Snapshot XP pairs, see the HP Stor age W orks Snapshot XP user gu ide .
2. F r om the BC main scr een , select the port, ho st gr oup , or L UN in the T ree V ie w box . 3. Display reserved SM PL volumes in th e Vo l u m e L i s t .
2. In the BC main scr een, select the port, host gr oup , or L UN in the T r ee Vie w box . 3. T o display r eserved SMPL volumes in the V olume l ist , open the Display F ilter w indo w , select the Reser ve(d) check box, an d click OK . 4. Select the v olumes, r ight-clic k, and se lect Change R eserve .
•S e l e c t S - V o l b o x •B u t t o n s • Creati ng L1 pairs Pa i r c r e a t e Vo l u m e L i s t The V ol um e List in the upper half of the P airc r eate windo w displa ys the f ollo wing.
NO TE: Y ou can s elect an MU n umber f or a cas cade pair . Y ou canno t selec t the same MU numb er f or diff er ent cascade pairs of the same P-V OL (r oot or node volume) . Select S-V o l box Thi s box fi lters S-VOLs display ed in the S-VOL list .
NO TE: T o appl y the ne w pair oper ati on se tting displ ay ed in the Pr eset L ist to t he disk ar r ay , c lic k Apply on the BC main sc r een. • Cance l : Cancels the oper ations set in the P air cr eate w indo w and clos es the P airc reate w indo w .
CA UT ION: Th e L 2 p a i rc re a t e o p e ra t io n ov e r w ri t e s a l l exi s t i n g d a t a o n th e L 2 S - VO L s . You a re re s p o n s i b l e fo r backing up t he data on the S-V OLs befor e cr eating BC pairs . Cr eating L2 pairs 1. Ensure that the L2 S-V OLs are unmounted .
NO TE: An LDEV number ending with # (f or ex ample , 00: 0 1# ) indicates the LD EV is an exter nal volum e. • MU :M Un u m b e ro ft h eP - V O L • Status :S t a t u s o f t h e P - V O L • Po .
NO TE: Th e number of secondary v olumes that can be dis pla y ed in the S -V OL L ist at one time is limi ted t o 1 , 02 4. If th e number o f v olumes d e fi ned in the disk a rr ay ex ceeds this l imit , use the Prev ious and Ne xt buttons on the upper right of the S -V OL List to turn the p ages of th e S-VOL List and see the e ntire list .
2. In the BC main sc reen , select the port, host gr oup, or P-VOL in the T ree V ie w box t o fi lter the volumes display ed in the V olume list . 3. Select the pairs y ou w ant to split , ri ght-cli ck the selec ted P-VOLs, and select Pa i r s p l i t .
b. Ensur e that the L1 pairs are spli t (status = P S US). c. In the Select MU lis t, s elect the MU number ( 1 or 2 ) for the L2 pair to be cr eated . d. F r om the P airsplit V olume Lis t , select t he volume to a ssign as the S-V O L f or the L2 pair .
• CLP R(S) : Cac he logical partition of the S-V OL Win d ow op ti on s • Use the R es ync T y pe list to s elect the pairr esy nc type for pairs being r es ync hr oni z ed ( Norma l Cop y , Quick R es ync , Reverse Copy ,o r Quick Rest ore ).
CA UTION: D u rin g t he q u ick re s tore o p e rat io n, t he R A I D leve l s, H D D t yp e s, a nd C a ch e LU N se t t i ng s are s wa pped. T o avo id perfor mance impact due to quick r estor e op er ations: • Ensure th at the P-V OL and S-V OL hav e the same RAID lev el and HDD type befo r e perfor ming the quick r est ore oper ation .
4. Repeat s tep 2 — step 3 to sus pend additional pairs in the l ist . 5. In t h e BC m a in scre en, cl ick Apply to suspend the spec i fi ed pair s. The BC main sc r een now dis play s the re sults of the pairsplit-E oper ations (that is , pair status c hanged to PS UE) .
Fig ure 39 H is tor y p an e NO TE: If Snapsh ot XP is install ed, t he lo wer area o f the pane lists t he oper ati on history of Snapshot XP pairs. F or mor e info rmation , see the HP Stor age W orks Snapshot XP user guide . The upper area of the His tory pane lists the operati on history of BC pair s.
T able 22 BC pair activ ity cod es, mess ages , and descriptions Code Mes sa ge Descri ption 47 1 0 - 47 1 F PA I R S T A R T BC initial copy operati on started . 472 0 - 47 2 F P A I R E N D BC initi al copy oper ation ended , and pair statu s changed to P AI R.
NO TE: Mor e options w ill be supported in the f utur e. See BC options for fu r th er i n fo rma t ion. The Apply button applies the option settings in the Select Option bo x. Setting a BC option (S wap&F reez e option) 1. In the BC main scr een , cli ck Opti on to disp lay the Selec t O ption bo x.
Error Code De scr ip ti on Co rr ecti v e Act io n 0 818 T he P airr es ync or P airs plit-E command canno t be issued because a path gr oup is s et. Unmount the S-VOL (of fl ine fr om the host), or delete Cont inuou s Acces s XP path. 08 1F Command Re ject .
Error Code Des cr ip ti on Co rr e cti v e Act io n 10 0 4 Logical con tradicti on. Call H P technical supp ort for assistan ce. 10 0 5 Log ic a l co nt ra dicti on. Call HP technical supp ort for assistan ce. 10 0 7 Logical contr adiction . Ca ll HP technical s uppor t for assistance.
Error Code De scr ip ti on Co rr ecti v e Act io n 10 3 3 Th e sp eci fi ed P-VOL is not r eally a P-V OL. Check pai r status. 10 3 7 Th e sp eci fi ed P-VOL has b een set as a BC S-V OL. Chec k pair stat us. 10 3 A Th e P air res ync c om ma nd was i ssu ed t o a device in the SMPL status.
Error Code Des cr ip ti on Co rr e cti v e Act io n 10 71 The sta tu s clas si fi cation (statusindc) in the Status Check command is incorr ect . Call HP te chnical suppo rt for assistanc e. 10 7 2 Th e CU n um be r spe ci fi ed by the Statu s Check command (vo lume status) does not ex ist .
82 Business Cop y XP (BC) for the Arr ay.
In de x A access attributes copy ing ,4 9 licens e capacity ,5 1 setting w ith L UN Sec urity XP Extensio n ,4 9 At-T ime Split func tion ,3 6 att ributes copy ing ,4 9 licens e capacity ,5 1 res e t .
initial copy oper ation ,2 1 inqrai d command ,1 6 L L1 pairs ,3 3 ,6 6 L2 pairs ,3 3 ,6 7 LDEV maintenance ,1 5 leaf v olume ,3 3 license capac ity , L UN Sec urity XP Extension ,5 1 L UN Secur ity X.
pairs At- Tim e Spl it fun ct ion ,3 6 back war d re sy nchr oni z ation ,2 5 cascade ,1 3 ,2 3 ,3 2 Continuous A ccess XP Journal ,4 3 cr eating and splitting ,7 0 deleting ,3 1 , 7 4 Detail w indo w.
S-V OLs At-T ime Split functi on ,3 6 backw ard pair re sy nc oper ation ,2 5 cascade f unction ,3 2 Continuous Access X P ,4 6 Continuous Access X P Journal ,4 3 cr eating and splitting pair s ,7 0 d.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il HP (Hewlett-Packard) XP12000 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del HP (Hewlett-Packard) XP12000 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso HP (Hewlett-Packard) XP12000 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul HP (Hewlett-Packard) XP12000 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il HP (Hewlett-Packard) XP12000, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del HP (Hewlett-Packard) XP12000.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il HP (Hewlett-Packard) XP12000. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo HP (Hewlett-Packard) XP12000 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
