pavan_613

@@@@ Official Storage (San/nas) @@@@@@

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girishv
[quote name='sachin16' timestamp='1346092927' post='1302388408']
[b][color=#282828][font=helvetica, arial, sans-serif]For what kinds of apps/db do you suggest/prefer clariion storages?[/font][/color][/b]
[color=#282828][font=helvetica, arial, sans-serif]Given a new clariion storage / new switch / new server, series of steps which you would perform to allocate space from that storage[/font][/color]
[color=#282828][font=helvetica, arial, sans-serif]What is trespassing and when it happens- trespassing concept idea undhi.....its like LUN jumping between SPA and SPB .......but don't know why it happens.....also correct me if I am wrong [/font][/color]
[/quote]

the catch here is only clariion gurinche adagaledu....general ga oka app ki storage isthunnamu ante e storage ani ela decide avuthamu anedi question
[color=#282828][font=helvetica, arial, sans-serif]It is imp. to know the I/O size, the distribution of sizes, performed by the applications. [/font][/color]
[color=#282828][font=helvetica, arial, sans-serif]I/O entha? reads ekkuva untaya? writes ekkuva untaya? each write size entha? performance kavala? ilanti factors ni base chesukuni decide avuthamu...[/font][/color]

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girishv
[quote name='sachin16' timestamp='1346092927' post='1302388408']
[color=#282828][font=helvetica, arial, sans-serif]For what kinds of apps/db do you suggest/prefer clariion storages?[/font][/color]
[b][color=#282828][font=helvetica, arial, sans-serif]Given a new clariion storage / new switch / new server, series of steps which you would perform to allocate space from that storage[/font][/color][/b]
[color=#282828][font=helvetica, arial, sans-serif]What is trespassing and when it happens- trespassing concept idea undhi.....its like LUN jumping between SPA and SPB .......but don't know why it happens.....also correct me if I am wrong [/font][/color]
[/quote]

1) first of all physical connectivity check undo ledo confirm chesukovali and make sure the server is powered on and cabled properly.
[color=#000000][font=Verdana, Arial, Helvetica, sans-serif][size=3] You should boot into your HBA BIOS (not the server BIOS.) With a Q-Logic Adapter, you normally press CTRL-Q when prompted at boot. This is going to provide the WWN / WWPN information to the Brocade switch, which will help us manually assign storage to our server in Unisphere without the EMC Host Agent.[/size][/font][/color]
[color=#000000][font=Verdana, Arial, Helvetica, sans-serif][size=3]2) zoning[/size][/font][/color]
[color=#000000][font=Verdana, Arial, Helvetica, sans-serif][size=3]3) Launch unisphere ([/size][/font][/color]login to EMC Unisphere with any PC connected to the same network as your storage processors. You can either load the EMC Unisphere Server onto this PC and connect to the storage processor IP address, or you can connect directly to service processor A (SPA) or SPB with your web browser and Unisphere / Navisphere will download automatically)
4) [color=#000000][font=Verdana, Arial, Helvetica, sans-serif][size=3]When you are presented with the EMC Unisphere Dashboard, select the storage system you would like to manage by clicking its hyperlink. [/size][/font][/color][color=#000000][font=Verdana, Arial, Helvetica, sans-serif][size=3]Then select the storage tab[/size][/font][/color]
[color=#000000][font=Verdana, Arial, Helvetica, sans-serif][size=3]5) Storage pools already untayi...lekapothe create chesuko....then create luns[/size][/font][/color]
[color=#000000][font=Verdana, Arial, Helvetica, sans-serif][size=3]6) Create storage group and add the luns to the storage group[/size][/font][/color]
[color=#000000][font=Verdana, Arial, Helvetica, sans-serif][size=3]7) Host register cheyali. [/size][/font][/color]

[color=#000000][font=Verdana, Arial, Helvetica, sans-serif][size=3]motham step by step procedure undi...kani external links veyakudadu ani thinking....kavali ante pm chestha[/size][/font][/color]

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girishv
[quote name='sachin16' timestamp='1346092927' post='1302388408']
[color=#282828][font=helvetica, arial, sans-serif]For what kinds of apps/db do you suggest/prefer clariion storages?[/font][/color]
[color=#282828][font=helvetica, arial, sans-serif]Given a new clariion storage / new switch / new server, series of steps which you would perform to allocate space from that storage[/font][/color]
[color=#282828][font=helvetica, arial, sans-serif][b]What is trespassing and when it happens- trespassing concept idea undhi.....[/b]its like LUN jumping between SPA and SPB .......but don't know why it happens.....also correct me if I am wrong [/font][/color]
[/quote]

[size=4][font=arial, helvetica, sans-serif]yes, u r right, luns ownership change ayye danini trespassing antamu....prathi lun ki oka default owner (SPA or SPB) unthundi...[/font][/size]

[size=4][font=arial, helvetica, sans-serif]ownership lo 2 types 1)default 2) current[/font][/size]

[size=4][font=arial, helvetica, sans-serif]if the current owner is not same as default owner we call it as trespassing.[/font][/size]

[color=#494848][font=Verdana, Arial][size=3][background=rgb(254, 254, 254)][size=4][font=arial, helvetica, sans-serif]The question at this point is, why would a LUN enter a trespass state? There is a list of reasons why this may happen, [/font][/size][/background][/size][/font][/color]

[color=#494848][font=Verdana, Arial][size=3][background=rgb(254, 254, 254)][size=4][font=arial, helvetica, sans-serif]Trespasses can happen manually, by the array. From a manual perspective, at any point you can force a trespass (move to opposite SP) from the GUI/CLI of the storage array. What’s important to get here is that even if I manually make trespassing decisions they can be overridden by the array or the hypervisor right away. So from a manual perspective, I force trespasses from the GUI/CLI. I may decide to do this to untrespass a LUN, or if I know I will be removing paths and want to force IO down a certain SP. On the more automatic side, a LUN can be trespassed by an SP for many conditions. An NDU “non-disruptive upgrade” to an array will cause LUNs to be trespassed from one SP to the other to ensure data access LUN access during the whole upgrade. After the upgrade, the LUNs may exist solely on one SP and those LUNs with current owner not equal to default owner are considered trespassed. There are many other reasons from an array perspective. .[/font][/size][/background][/size][/font][/color]

[color=#494848][background=rgb(254, 254, 254)][font=arial, helvetica, sans-serif]simple ga cheppali ante, if a SP is not reachable or rebooting, LUNS ownership change avuthundi to ensure lun access[/font][/background][/color]

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computaboi
@ 30 years industry and sachin 16 , sHa_clap4 you rock
Naku oka basic question-- Ippudu oka EMC- SAN ki market lo primary competitors evaru , evari market shares enta unnayi
generally Storage environment mixed environment untunda like SAN & NAS , if that's the case do corporates expect storage engineer to be proficient in both SAN & NAS technologies (in most cases) I know some companies can budget specialists for SAN & NAS but generally speaking what is the case..

@ 30 years industry inka competency based questions elanti adugutaru interviews lo in general ?

btw I am starting my course on this wednesday so hopefully I should be able to add some value to this thread
cheers guys

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girishv
[quote name='computaboi' timestamp='1346101299' post='1302389598']
@ 30 years industry and sachin 16 , sHa_clap4 you rock
Naku oka basic question-- Ippudu oka EMC- SAN ki market lo primary competitors evaru , evari market shares enta unnayi
generally Storage environment mixed environment untunda like SAN & NAS , if that's the case do corporates expect storage engineer to be proficient in both SAN & NAS technologies (in most cases) I know some companies can budget specialists for SAN & NAS but generally speaking what is the case..

@ 30 years industry inka competency based questions elanti adugutaru interviews lo in general ?

btw I am starting my course on this wednesday so hopefully I should be able to add some value to this thread
cheers guys
[/quote]

oka post lo inni questions aa? lolz.....let me try

share value ki vasthe surprisingly, EMC (around 26) kanna NetApp share value ekkuva (around 34)

environment ayithe mostly mixed untayi...SAN n NAS rendu vasthe better...it all depends on requirement....konni environments lo mostly SAN unthundi, konnintlo mostly NAS....konni mixed untayi....kani mixed e ekkuva ga untayi.....

interview questions ki vasthe.....it depends evaru interview chesthunnaru ani....okavela desi gadu chesthe samandam lenivi kuda aduguthadu usually....americans ayithe ne exp. meeda ekkuva questions adugutharu....nuvvu honest ga unte impress avutharu....vasthe vachani rakapothe radu ani cheppadam better americans deggara...desi gallaki detail ga explain cheyadaniki chudu....in that way, vadu ekkuva questions adige time undadu....

anni questions ans chesana?

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computaboi
[quote name='30 yrs industry' timestamp='1346102187' post='1302389728']
oka post lo inni questions aa? lolz.....let me try

share value ki vasthe surprisingly, EMC (around 26) kanna NetApp share value ekkuva (around 34)

environment ayithe mostly mixed untayi...SAN n NAS rendu vasthe better...it all depends on requirement....konni environments lo mostly SAN unthundi, konnintlo mostly NAS....konni mixed untayi....kani mixed e ekkuva ga untayi.....

interview questions ki vasthe.....it depends evaru interview chesthunnaru ani....okavela desi gadu chesthe samandam lenivi kuda aduguthadu usually....americans ayithe ne exp. meeda ekkuva questions adugutharu....nuvvu honest ga unte impress avutharu....vasthe vachani rakapothe radu ani cheppadam better americans deggara...desi gallaki detail ga explain cheyadaniki chudu....in that way, vadu ekkuva questions adige time undadu....

anni questions ans chesana?
[/quote]
ya you did, thanks for ur advice.
Oka doubt ippudu different levels of raid untayi kada , evaru configure chestaru ee array ee raid level lo undali and who is primary responsible for doing it
or do the arrays comes by default with pre-configured raid level?

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pavanntrmahesh
[quote name='computaboi' timestamp='1346103641' post='1302389880']
ya you did, thanks for ur advice.
Oka doubt ippudu different levels of raid untayi kada , evaru configure chestaru ee array ee raid level lo undali and who is primary responsible for doing it
or do the arrays comes by default with pre-configured raid level?
[/quote]
Generally it depends on the company.................vallu netapp or emc recommedations tesukone vala vala standrds vadutharu............but for netapp the defaulf is raid-dp.......emc ki osthe mostly its raid 5 or raid 7 preferred standard.........

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girishv
[quote name='CITI' timestamp='1346108542' post='1302390174']
sSc_hidingsofa sSc_hidingsofa
[/quote]

no spamming here....[img]http://lh5.ggpht.com/-G4l68fLCAWY/TkQ6VvritGI/AAAAAAAADuU/cNnDjIspA1g/Brahmi-2.gif[/img] doubts unte adugu...lekapothe post chesina matter chaduvu...

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manchi_babu
[quote name='30 yrs industry' timestamp='1346108666' post='1302390184']

no spamming here....[img]http://lh5.ggpht.com/-G4l68fLCAWY/TkQ6VvritGI/AAAAAAAADuU/cNnDjIspA1g/Brahmi-2.gif[/img] doubts unte adugu...lekapothe post chesina matter chaduvu...
[/quote]
bhayya nuvu racha..
manchi grip maintain chesukuntavu ga subject meda..
keep it upto date...EMC vadu ISLON release chesadu..and data domain(deduplication) meda kuda grip techuko..inka ninnu evadu apaledu..
[img]http://lh3.ggpht.com/-WtureaZJfcg/Tk5e0QFnJ-I/AAAAAAAAAUU/dP7WtNqcbHk/s400/3%252520%2525282%252529.png[/img]

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manchi_babu
@All:-
ma environment lo
EMC-DMX/VMAX=SRDF/OpenReplicator,
NETAPP-MetroClusters=SNAPmirr/SNAPvault,
HP-3PAR-T400,V400 with replication unayi...
vati meda emana info kavali antey questions adagandi vesta...

Manam SAN admin aa leka Storage Admin aa anedi chusukovali main.. SAN deals with Switches like Cisco,Brocade and McDATA. Storage deals with disks. so Networking kuda koncham idea undali bhayyas.ss

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manchi_babu
[quote name='CITI' timestamp='1346116267' post='1302390704']
:0012391: :0012391: manam VBLOCK :0012391: :0012391:
[/quote]
VBLOCK aaa cool..
CLARiiON ee EMC vadiki manchi peru techipetindi,.alanti CLARiiON ney VBLOCK replace chesindi ani vina..
kumey bha VBLOCK ni..
[img]http://www.bewarsetalk.net/discus/movieanimated6/avuna.gif[/img]

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girishv
[quote name='manchi_babu' timestamp='1346115052' post='1302390580']
bhayya nuvu racha..
manchi grip maintain chesukuntavu ga subject meda..
keep it upto date...EMC vadu ISLON release chesadu..and data domain(deduplication) meda kuda grip techuko..inka ninnu evadu apaledu..
[img]http://lh3.ggpht.com/-WtureaZJfcg/Tk5e0QFnJ-I/AAAAAAAAAUU/dP7WtNqcbHk/s400/3%252520%2525282%252529.png[/img]
[/quote]

e project lo islon kastam ba....clients are going to buy data domain...dani kosame waiting...

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girishv
[quote name='manchi_babu' timestamp='1346115267' post='1302390600']
@All:-
ma environment lo
EMC-DMX/VMAX=SRDF/OpenReplicator,
NETAPP-MetroClusters=SNAPmirr/SNAPvault,
HP-3PAR-T400,V400 with replication unayi...
vati meda emana info kavali antey questions adagandi vesta...

[b]Manam SAN admin aa leka Storage Admin aa anedi chusukovali main.. SAN deals with Switches like Cisco,Brocade and McDATA. Storage deals with disks. so Networking kuda koncham idea undali bhayyas.ss[/b]
[/quote]

GP baa and totally agreed. [img]http://lh3.ggpht.com/-WtureaZJfcg/Tk5e0QFnJ-I/AAAAAAAAAUU/dP7WtNqcbHk/s400/3%252520%2525282%252529.png[/img]

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