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

[girishv]

[quote name='computaboi' timestamp='1347916176' post='1302493154']
Ba thanks konchem clarity vachindi ippudu
Oka doubt, CIFS-nuvvu permissions ivvu annapudu are you referring to normal AD security permissions for users that are normally done using AD security groups on windows server or permissions on the NAS level ? [color=#ff0000][b]AD Security permissions[/b][/color]

ante NAS/SAN usage(in this scenario) is limited to only present the volume/lun to server as a disk , and once that job is done rest of the business is normal where server OS comes in to play ? [color=#ff0000][b]Yes, [/b][/color][b]either NAS or SAN, [/b][b]oka sari storage provision chesaka, u r done...[/b]

Ok

ikkada na doubt enti ante for example if I share "//filer1/share1/mine/expenses/gas expenses.xls" with unix based server and windows based server,
Windows recognises disks that wre in fat /ntfs format, unix needs it to be in ufs etcc...how are mechanics in the background work.

For sample: Can you please advise me if below scenario is correct
I created a volume called "windows volume": shared with unix server and windows server, disk was patitioned in NTFS, so permissions set on this folder are NTFS permissions
I want unix system to be able to see data on the windows volume, right now now it's easy peasy for windows to access to the above share
however for unix to access will I then have to use smb:// path ? like the way how you would access windows file system from unix bases systems ?

I suppose SMB will take care of checking users permissions whilst accessing from unix ?
[/quote]

security 3 types
1) NTFS------windows (CIFS shares) ki ivvali ante NTFS set chestham
2) unix------unix or linux or AIX (simple ga cheppali ante non-windows) ki ivvali ante unix set chestham (NFS exports)
3) mixed----not recommended....(nenu intha varaku use cheyaledu)

anthe kani, oke volume unix ki kanipichali, windows ki kanipinchali ante kastam.....cheyachu emo kani i never done that....simple ga windows hosts ki cifs shares create chestham, for that we set ntfs as security.....non-windows hosts we set unix as security...

security styles meeda chinna notes gather chesa....post chesthunna, wait

[girishv]

The security style can be one of the following values:

[b]unix [/b]

The user’s UID and GID, and the UNIX-style permission bits of the file or directory determine user access. The filer uses the same method for determining access for both NFS and CIFS requests. If you change the security style of a qtree or a volume from ntfs to unix, the filer disregards the Windows NT permissions that were established when the qtree or volume used the ntfs security style.

[b]ntfs [/b]

For CIFS requests, Windows NT permissions determine user access. For NFS requests, the filer generates and stores a set of UNIX-style permission bits that are at least as restrictive as the Windows NT permissions. The filer grants NFS access only if the UNIX-style permission bits allow the user access. If you change the security style of a qtree or a volume from unix to ntfs, files created before the change do not have Windows NT permissions. For these files, the filer uses only the UNIX-style permission bits to determine access.

[b]mixed [/b]

Some files in the qtree or volume have the unix security style, and some have the ntfs security style. A file’s security style depends on whether the permission was last set from CIFS or NFS. For example, if a file currently uses the unix security style and a CIFS user sends a setACL request to the file, the file’s security style is changed to ntfs. If a file currently uses the ntfs style and an NFS user sends a setpermission request to the file, the file’s security style is changed to unix.

[computaboi]

@ 30 years thanks kaka, nenu UK time lo untanu, naku ippudu nearly 10:40 pm autundi so going to bed now, I have class in the morning @ 5am and job @ 8am!!
So going to bed now,, If you don't mind na rest of te questions niku time kudirinappudu answer cheste I will read and digest them 2mrw morning whilst I am @ work

thanks bruv

[girishv]

[quote name='computaboi' timestamp='1347917633' post='1302493277']
@ 30 years thanks kaka, nenu UK time lo untanu, naku ippudu nearly 10:40 pm autundi so going to bed now, I have class in the morning @ 5am and job @ 8am!!
So going to bed now,, If you don't mind na rest of te questions niku time kudirinappudu answer cheste I will read and digest them 2mrw morning whilst I am @ work

thanks bruv
[/quote]

np...will try 2 ans ur questions

[pavan_613]

kudaratam ledhu .....eee thread loki raavadaniki

[manchi_babu]

[quote name='30 yrs industry' timestamp='1347906721' post='1302491856']
First of all, what is the basic difference between SAN and NAS?

SAN lo oka oka server ke isthamu....vadu use chesina cheyakapoyina, we don't care....adhi vadidi, vadi istam...[b][size=5].it's like wife...[/size][/b]
NAS ante oke volume or qtree ni chala servers ki share chesthamu.....[size=5][b]ante adhoka L anamata[/b][/size].....vadukunna vadiki vadukunnatha.......

so, it is not recommended to share same lun to multiple servers in SAN. inka detail ga cheppala?
[/quote]
mama
[img]http://lh3.ggpht.com/-RxikW40hh5U/TdsrdBJD9nI/AAAAAAAAAME/UEy1noMTT2Y/s288/Ye%252BMaaya%252BChesave%252B%2525282010%252529%252B-%252BBRRip%252B-%252BmHD%252B-%252B720p%252B-%252Bx264%252B-%252BAAC%252B-%252Bameet6233%252B%2525282%252529.gif[/img]

[girishv]

[quote name='manchi_babu' timestamp='1347937907' post='1302495308']
mama
[img]http://lh3.ggpht.com/-RxikW40hh5U/TdsrdBJD9nI/AAAAAAAAAME/UEy1noMTT2Y/s288/Ye%252BMaaya%252BChesave%252B%2525282010%252529%252B-%252BBRRip%252B-%252BmHD%252B-%252B720p%252B-%252Bx264%252B-%252BAAC%252B-%252Bameet6233%252B%2525282%252529.gif[/img]
[/quote]

[img]http://lh5.ggpht.com/-fYKw5uJ8cgo/TkREc3-xqwI/AAAAAAAADvI/7SWCXbN2dr4/Brahmi.gif[/img]

[manchi_babu]

[quote name='30 yrs industry' timestamp='1347939355' post='1302495474']

[img]http://lh5.ggpht.com/-fYKw5uJ8cgo/TkREc3-xqwI/AAAAAAAADvI/7SWCXbN2dr4/Brahmi.gif[/img]
[/quote]
[img]http://lh6.ggpht.com/-Eoyjpy5n2PM/TnyuNWl4-OI/AAAAAAAAEWE/uc5DeoeG3_s/Brahmi-3.gif[/img]

[girishv]

[b]why sharing of LUNs is important, is it important, I mean what will be the business need?[/b]

oka suggestion, don't use the term LUN....LUN ante SAN....in a broader perspective, use the term storage....storage can be SAN or NAS....use the term LUN only when you mean it......

why we sharing storage?

google, yahoo....ivvani examples of NAS....here there is only a single of data....but there are lot of users who need 2 access it....we share the data to save storage...similarly, me office lo 100 members unnaru anuko...prathi okkadiki 100gb space kavali to store their personal files like pics, timesheets, personal documents.....do we need 100*100=10,000GB? No

simple ga oka share create chestham 100gb tho and users ki access isthamu, now all the users will see 100gb disk....in that way we are saving 10,000-100=9900gb

assuming that the users won't use that 100gb all at once....okavela use chesthe....request vasthundi....storage ivandi ani...appudu malli storage provision chestham......

i'm trying to ans one question at a time...so that clear ga lekapothe u can refer to the post number

[girishv]

[quote name='manchi_babu' timestamp='1347939458' post='1302495491']
[img]http://lh6.ggpht.com/-Eoyjpy5n2PM/TnyuNWl4-OI/AAAAAAAAEWE/uc5DeoeG3_s/Brahmi-3.gif[/img]
[/quote]

[img]http://lh5.ggpht.com/-S3edE4AFWLE/Tnyt-VoHJ7I/AAAAAAAAEWE/4gda4yj5Umc/Brahmi-2.gif[/img]

[girishv]

[b][color=#282828][font=helvetica, arial, sans-serif]Why is it not recommended to share same LUN with multiple servers, what are the potential dis advantages please ?[/font][/color][/b]
oka server ki lun endhuku istham? to write data on that, right? ippude oke lun ni idariki isthe em avuthundi? think, oka keyboard ichi, indarini type cheyandi ante ela unthundi? (oka ammayini ichi.....ane example ivvachu....malli threesome antaru ani e example isthunna)

i think you got the ans....simply data corrupt ayipothundi...oke sari idaru rasthe evaru rasindi save avuthundi? so it is not recommended....disadv ante data corruption....

[b][color=#282828][font=helvetica, arial, sans-serif]What are the alternatives available in SAN to get round this ?[/font][/color][/b]
vere alternative ante NAS....oke storage oka server kanna ekkuva chudali ante NAS....evariki ichindi vade chudali ante SAN.....inka doubt unda?

[b][color=#282828][font=helvetica, arial, sans-serif]From a business perspective does it have any impact in terms of performance?[/font][/color][/b]
data ne pothe inkekadi performance....gundu chesukuni comb kosam vethikinattu unthundi....

[girishv]

i think i answered ur questions...emanna miss ayi unte..post them again

[computaboi]

@30 years industry, #post101
hey boss thanks for your message, naku nuvve cheppe points digest ayyayi kaka however I am trying to understand if & why's of it
I think I may not have phrased my question very well as I should have..

Naku ni first reply tarvata ardam aindi sharing ki NAS, dedicated storage to a single server ki SAN use chestaru ani, naku ardam kanidi emitante
SAN lo enduku support cheyatledu sharing ni whilst NAS support chestunte ?
Obviously having flexibility to share your data across multiple servers is an advantage right ? I mean like in terminal servers, where multiple users can access same data with out corrupting the existing data.
How did NAS manage to provide sharing feature but not SAN ?

inka ippudunna SAN infrastructures lo FC-AL topology vadutunnara ekkadaina?

[pavan_613]

[girishv]

@computaboi.....koncham busy ga unna....will ans ur questions soon....