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Answer the following questions

a$.$ An organization owns a storage system of capacity $1000$ TB$.$ Assume on an average $100$ GB of data modifies every month, $25$ GB of data modifies every week, and $4$ GB of data modifies every day. Assume that the same network is used to transfer regular applications traffic and the backup traffic. Observation from past few years indicates that data recovery requirement emerges on an average once in a year. Suggest a suitable backup policy for the organization based on your learning from the course. Comment on the RTO and RPO values which can be attained by the suggested backup policy. Provide appropriate justifications in support of your answer. Elaborate your answer with appropriate illustrations and$/$or diagrams.

b$.$ For the given output, explain the design used in the LVM with appropriate block diagram and illustrations. What is the actual usable filesystem here? Where is it mounted and how much physical data can actually be placed there? The commands executed to

generate this output are as follows:

$1$s$-1/$dev$/$ad

pve

vga

Iva

lvas lva vg$01/$thinl vg$01/$thin$2$ vg$01/$thini dayo vg$01/$thinl dayl

mount grep thin

Output

$[$root@zc$446-$ admin$]$# $/$dev$/$sd

$1$ disk $0$ May $1007$:$02/$dev$/$sda br

root disk $5,1$ May $1007$:$02/$dev$/$sdal brw$-$r $1$ root disk $5,2$ Hay $1007$:$02/$dev$/$sda$2$

br

root disk B$,16$ May $1007$:$02/$dev$/$adb br $1$ root disk $8,32$ May $1007$:$02/$dev$/$edc

brw$-$rw$-1$ root disk B$,45$ May $1007$:$02/$dev$/$add

$[$root@zc$446-$server admin$]$# pvs

PV VG Fat Attr PSize PFree $/$dev$/$sda$2$ centos $1$vm$2$

$<9\mathrm{.}00$g $/$dev$/$sdb vg$011$vm$2-<5\mathrm{.}00$g $<3\mathrm{.}00$g

$/$dev$/$adc vg$011$vm$2$ a $<15\mathrm{.}00$g $<5\mathrm{.}00$g

$/$ dev$/$add vg$011$m$2$ a $<20\mathrm{.}00$g $<20\mathrm{.}00$g

vg$01$ wa$---<39\mathrm{.}999<27\mathrm{.}99$g

LV VG $[$ Attr

$[$ root@zc$446-$server rver admin$]$ VG #PV #LV #SN Attr VSize vgs

centos $120$ wz$--$n$-<9\mathrm{.}00$g

root@zc$446-$server admin$]$# lva

Move Log Cpy Sync Convert

centos$-$wi$-$ao$-$ root

$<8\mathrm{.}00$g centos $-$wi$--1\mathrm{.}00$g

$0$

LSize Pool Origin Datas Metak

swap

poo$10$

vg$$i twi$-$actz$--10\mathrm{.}00$g thinl vg$01$ Vwi$-$a$-$tz $1\mathrm{.}00$t pool$0$

$100\mathrm{.}002\mathrm{.}08$

$0\mathrm{.}98$

thini dayo vg$01$ Vwitz$-$k $1\mathrm{.}00$t pool$0$ thinl thinl dayl vg$01$ Vwitz$-$k $1\mathrm{.}00$t poo$10$ thini

$1\mathrm{.}50$t pool$00\mathrm{.}00$ thin$2$ vg$01$ Vui$-$a$-$tz $[$

root@zo$446-$server adminje Iva LV

VG Metal Move Log Cpy Sync Convert Attr

root centos$-$wi$-$ac $<8\mathrm{.}00$g

swap centos$-$wi$-$a$0[1\mathrm{.}00$g

LSize Pool Origin Data

$1$vol$0$ pmspare$)$ vg$01$ evi $1\mathrm{.}00$g poo$10$

vg$01$ twi$-$actz$--10\mathrm{.}00$g

$100\mathrm{.}00$

$2\mathrm{.}08$

$[$pool$0$ tdata$)$ vg$01$

Twi$-$ac $10\mathrm{.}00$g

$[$ pool$0\_$tmeta$]$ thinl

vg$01$

evi$-$ao$-$

$1\mathrm{.}00$g

vg$01$ Vwi$-$a$-$tz$-$

$1\mathrm{.}00$t pool$00\mathrm{.}98$

thinl day thini dayl

vg$01$ Vwitz$-$k vg$01$ Vwick

$1\mathrm{.}00$t poo$10$ thinl

$1\mathrm{.}00$t pool$0$ thinl

thin$2$ vg$01$ Vwi$-$a$-$tz $1\mathrm{.}50$t pool$00\mathrm{.}00$

$[$root@zc$446-$server admin$]$ lva: lvs vg$01/$thini vg$01/$thin$2$

vg$01/$thini dayo vg$01/$thini dayl Attr LSize Fool Origin Data Metal

Hove Log Cpy Sync Convert

root centos$-$wi$-$ap$-<8\mathrm{.}00$g

evap

centos $-$wi$-$ao $1\mathrm{.}00$g

poo$10$ vg$01$

twi$-$actzD$-10\mathrm{.}00$g thinl vg$01$ Vwi$-$a$-$tz$--1\mathrm{.}00$t pool$0$

$100\mathrm{.}002\mathrm{.}09$

$0\mathrm{.}98$

thini dayo vg$01$ Vwi$---$tz$-$k $1\mathrm{.}00$t pool thini

thini dayl vg$011\mathrm{.}00$t pool$0$ thinl

VG Attr Log Cpy Sync Convert LV LSize Pool Origin Data Hetas Hove

thini

vg$01$ Vwi$-$a$-$tz $1\mathrm{.}00$t poolo thinl dayo vg$01$ Vwitz$-$k $1\mathrm{.}00$t poo$10$ thinl

thina vg$01$ Vwi$-$a$-$tz $1\mathrm{.}50$t pool$0$

thini dayl vg$01$ Vwitz$-$k $1\mathrm{.}00$t pool$0$ thinl thin vg$01$ Vwi$-$a$-$tz $1\mathrm{.}50$t pool$00\mathrm{.}00$

$[$root@zc$446-$server admin$]$# $[$root@zc$446-$server admin$]$# mount grep thin

$/$dev$/$mapper$/$vg$01-$thini on $/$thini type ext$$

$($rw$,$ relatime, stripe$-16,$ data ordered$)$

$[$root@zc$446-$server admin$]$#

$0\mathrm{.}00$

$0\mathrm{.}98$

$(6+4=10$ Marks$)$