Sorry for delay. Thanks for reply.
I Found defination of LUN as below
A LUN is a Logical Unit Number. It can be used to refer to an entire physical disk, or a subset of a larger physical disk or disk volume. The physical disk or disk volume could be an entire single disk drive, a partition (subset) of a single disk drive, or disk volume from a RAID controller comprising multiple disk drives aggregated together for larger capacity and redundancy.
1) I know what is RAID , what do they mean about Raid controller ?
With the help of 3rd party volume managers we are creating LUNS - By my tutur.
I seen many inks - they did not use any 3rd volume managers
and done LUN configuration.
2. Do we need 3rd party voulme managers to create LUN in SAN storage ?
3. In real env, are they using which controller (scsi/iscsi/fc/sas/)
FYI: Few things i dont understand. Example -(internal adapter such as the Dell PERC card)
Simple definition would be better instead of using some terminologies related to STORAGE
I am a beginner
thats why i ask real time gurus
Please dont mind it.