21640462 6 Time Finder Mirror

8/11/2019 21640462 6 Time Finder Mirror

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Time Finder/Mirrors(BCV)

Up to! 995, to perform backup operations on standard volumes, the application and

file system should be shutdown .So the downtime is mandatory . In order to

overcome the downtime and to achieve RTO=0,Split mirror tec nolo!y wasintroduced.Which lead to the eneration of "# s B"S#$%SS CO$T#$"&$C%

VO'"M%S

B"S#$%SS CO$T#$"&$C% VO'"M%S

I$ facilitates unplanned downtime

It provides dynamic, full ima e copies of data

%ata protection and stand&by data for fast recovery

%ecision support

ack&up

'arallel information(%ata )ccess

"# device is used to create an additional mirror ima e of a standard device in order

to provide the facilities mentioned above.

usiness continuance is achieved throu h "# devices, the standard stand&alone

Symmetri* devices that are specially confi ured to be dynamic mirrors.

"# devices should be synchroni+ed with standard devices to perform replication and

obtain point in time physical mirror copies.

(Ma*e s+re t at t e si e o- t e BCV de.ice s o+ld e e +al to t e si e o- t e

Standard de.ice to w ic it pairs wit )

1ow to create BCV de.ices2

"reate standard devices and should be confi ured as unprotected.

-ap the device

"onvert the device

"ommit

%iscover the device

Update the #"- database

*The above procedure is run at the time of creation of devices


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Types o- BCV Mirrorin!

. -irrorin

/. -ulti "#

0. "oncurrent "#

1. 2emote -irrorin 3S2%46 Type 1,2,&3 are performed in the local sym,where as type 4 is performed

across the syms.

Operations per-ormed on BCVs

1. %sta lis Synchroni+e the standard volume with the "# volumes. $here

are two types of synchroni+ations full and incremental. $he first

synchroni+ation is always full and the rest are mostly incremental.

2.Split $erminate relationship between "# and Standard %evices. $here are

two types of splits instant split and consistent split. 4rom 7n enuity 5*8

instant split has become a default split.

3. Restore %urin the restore operation, data on the standard is replaced

with the data brou ht from the "# device. %urin this phase )pplications

must be stopped file system to be unmounted and should have volume

roups deactivated.

'&B S%SS#O$ "S#$3 SO'"T#O$ %$&B'%R S4MC'#

5ROC%6"R%

"reate a device roup to manipulate mirror operations between standard device and

"# in the symm.)dd the device pair to the roup, i.e, and Standard %evice and "#

%evice pair. 'erform mirror operations. and view the data by usin volume

mana ers disk roup. %elete the content in the Standard device and restore the data

from "#.

4:2 274727;"7>>9

'roduction host SU;= "# %evice& >>/0

ackup host & SU;5

%evice roup mird


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%isc roup & sund

Source

$ar et

7)CR%&T% & 6%V#C% 3RO"5 &66 ST&$6&R6 &$6 BCV 6%V#C%S

a "reate a device roup of type re ular>

c )dd "# to the roup

Sun=?symbcv mird associate dev >>/0

8)$O9 F#$6 4O"R ST&$6&R6 6%V#C% #$ SO"RC% S"$: #F $OT &V'B'%

M&S; #T TO F#$6 #$ SO"RC% 1OST

a ;ow find the list of devices mapped to the host

Sun=? symin@

b "reate alias to wwn of host

Sun7

Sun5

0009STDDE

0023BCV


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Sun=? symmask sid /== wwn >>>>>>>>> rename sun=(port>

c 2efresh the database

Sun=? symmask refresh

d) -ap the standard device to source host

Sun=? symmask &sid /== awn sun=(port> add dev >>>9 dir c p > nop, Sun=? symmask &sid /== awn sun=(port> add dev >>>9 dir /c p > nop

Sun=? symmask &sid /== awn sun=(port> add dev >>>9 dir 5c p > nop

Sun=? symmask &sid /== awn sun=(port> add dev >>>9 dir 8c p > nop

e ;ow refresh the #"- database

Sun=?symmask refresh

f ;ow scan the devices

Sun=? symcf discover

Sun=? symmaskdb list database

(device should be seen in the database under sun7)

C9

e Dist the device

sun=?v*disk list

f create disk roup


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sun=?v*d init sund disk A7-"> C9

Import the disk rouip

sun=?v*d f" import sund

h "reate a volume

sun=?v*assist sund make vol> />>m

i Start the volume

sun=? v*vol sund startall

E $o check the disk roups in the volume man er

Sun=?v*disk &o alld s list

k "reate a file system on the disk roup

sun=?newfs (dev(v*(rdsk(sund (vol>

l "reate a mount point

Sun=? mkdir "#

m -ount the volume

Sun=?mount (dev(v*(dsk(sund (vol> ( "#

n 7nter the directory

Sun=?cd "#

o 7nter the content in the folder

Sun=?cp (etc(r6 .

p %isplay the contents

Sun=? ls

)$ow sync roni e t e .ol+mes

a 7stablish the relation between standard device and "#

sun=? symmir mird est full

b ;ow check the status of device roupsun=? symmir mird @uery

sun=?symmir list


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5 Split t e relation

(T o split the volume unmount the source; f it is a consistent split, need not

to unmount the volume!

a Sun=?symmir mird split consistent"heck the status

b Sun=?symmir mird @uery

O$ T1% Bac*+p 1OST S"$>

"nless the relation is split tar#et volume can$t be mounted on the tar#et

host

= -ount the "# volume on the tar et

a Scan for new disks

sun5? v*disk scandisks

b ;ow check the disk roups

sun5?v*disk o alld s list

c Import the disk roup

sun5? v*d " import sund

Start the volume

Sun5?v*vol sund startall

h) "reate a mount point

Sun5? mkdir "#

-ount the volume

Sun5?mount (dev(v*(dsk(sund (vol> ( "#

h :pen the directory

sun5?cd "#

I check the contents

Sun5?ls

(#F T1% 6&T& %?#STS T1% O5%R&T#O$ #S S"CC%SSF"')

Unmount the volumes on the tar et for later sync cycles

Sun5?cdSun5?umount "#

#ncremental mirror t e .ol+mes

While "# is split from standard volume, Some I(: may take place in the standard

volume, Which results in the invalid tracks on "#,so it is re@uired to resync with


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Standard device a ain to have the tracks copied, so now perform incremental

establish and check the data on the tar et volume.

O$ T1% SO"RC% S"$:

)dd some data on source3Source has been already mounted on a directory

"#a "heck the present workin directory

Sun=?pwd

b If the directory is not opened ,open the directory

Sun=?cd bcv

c )dd some data

Sun=?cp (etc(f6 .

d "heck the status of the mirror

Sun=?symmir mird @uery 3Invalid tracks should be shown

e ;ow synchroni+e incrementally 3"heck whether the tar et is

unmounted

Sun=?symmir mird est 3 y default est does incremental copy of

tracks

f "heck the mirror status

Sun=?symmir sund @uery 3Invalid tracks should be Fero

Split the volumes and check the tar ets for data up rades

Sun=?symmir mird split consistent

h "heck the status

Sun=?symmir mird @uery

8) O$ T1% T&R3%T S"$> C1%C; T1% 6&T&

a -ount the volume

Sun5?mount (dev.(v*(dsk(sund (vol> (bcv

b "han e to directory bcv

sun5? cd bcv

c ;ow check the data in the directory

Sun5? ls 3I4 $G7 U'%)$7% %)$) IS S77; H:U2 :'72)$I:; IS SU""7SS4UD

R%STOR% T1% 6&T% TO SO"RC% FROM T&R3%T

In the source volume entire data has been erased now restore the data from the

tar et


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O$ T1% SO"RC% VO'"M% S"$:

a "heck the present workin directory

Sun=?pwd 3if it is bcv leave it intact else

b "han e the directory to "#

Sun=?cd "#c 2emove the content in the volume

Sun=?rm rf 6 .

d check the data

Sun=?ls 3It should not have any content

e ;ow unmount the volume

Sun=?cd

Sun=?umount bcv

f ;ow deport the d

Sun=?v*d " deport sund

C1%C; T1% ST&T"S O$ T1% T&R3%T S"$>

a Unmount the volume

Sun5? cd

Sun5?umount bcv

b %eport the volume

Sun5?v*d deport sund

R%STOR% T1% 6&T& O$ T1% SO"RC% S"$:

a 7*ecute restore command on the source

Sun=?symmir mird restore

b "heck the status

Sun=?symmir mird @uery 3Status should display restored

c Import the disk roup

Sun=? v*d " import sund

d Start the volume

Sun=?v*vol sund startall

e -ount the volumeSun=?mount (dev(v*(dsk(sund (vol> (bcv

f "han e the directory

Sun=? cd "#


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"heck the content

Sun=?ls

#F T1% 6&T& #S &V'&B'% &$6 #S S#M#'&R TO T1% 5R%V#O"S 6&T& T1&T

9&S 6%'%T%6 B4 "S T1%$ T1% O5%R&T#O$ #S S"CC%SS

Clean +p

"heck the status of session terminate

Sun=? symmir mird @uery

Sun=? symmir mird split

Sun=? symmir mird @uery

Sun=? symmir mird cancel 2emove standard devices from device roup mird

Sun=?symld mird remove %7#>>

Sun=?symbcv mird remove dev >>/0

2emove device roup

Sun=?symd delete mird &force


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21640462 6 Time Finder Mirror