Two Equally LUNs are seen the same way by the system

are you looking at LUN properties or RAID group properties ?

I am looking at LUN properties

so which device was introduced last and where do you see the discrepancy ?

Sorry I have included abriviated version. That is what you are asking:

"Disk /dev/emcpowerb: 572.1 GB, 572136620032 bytes
255 heads, 63 sectors/track, 69558 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks   Id  System
/dev/emcpowerb1               1       69558   558724603+  83  Linux

Disk /dev/emcpowerc: 1099.5 GB, 1099511627776 bytes
255 heads, 63 sectors/track, 133674 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks   Id  System
/dev/emcpowerc1               1      133674  1073736373+  83  Linux

Disk /dev/emcpowera: 71.5 GB, 71517077504 bytes
255 heads, 63 sectors/track, 8694 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks   Id  System
/dev/emcpowera1   *           1          13      104391   83  Linux
/dev/emcpowera2              14        8694    69730132+  8e  Linux LVM

Disk /dev/emcpowerd: 984.7 GB, 984756256768 bytes
255 heads, 63 sectors/track, 119723 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/emcpowerd doesn't contain a valid partition table

Disk /dev/emcpowere: 71.5 GB, 71517077504 bytes
255 heads, 63 sectors/track, 8694 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/emcpowere doesn't contain a valid partition table"

I am not in  the control of that system. Another company owns password etc. I believe that they have powerpath over there.

The old drive same RAID10 and SATAII etc

Disk /dev/emcpowerc: 1099.5 GB, 1099511627776 bytes

255 heads, 63 sectors/track, 133674 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

         Device Boot      Start         End      Blocks   Id  System

/dev/emcpowerc1               1      133674  1073736373+  83  Linux

I have created the following:

Disk /dev/emcpowerd: 984.7 GB, 984756256768 bytes
255 heads, 63 sectors/track, 119723 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/emcpowerd doesn't contain a valid partition table

They should both 1099.5GB. I guess?

the good one on LUN properties:

"User blocks: 2147483648
User capacity: 1024 GB
Raw Capacity 2048GB "

The recently created by myself - second one  is:

"User blocks: 1923352064
User capacity: 917.126 GB
Raw Capacity 1834.251GB"

are you sure /dev/emcpowerd is the second LUN ? fdisk says it's 984G while Navi says it's only 917G ..something is not right. Do you have PowerPath on this system? Can you post "powermt display dev=all" output.

the one you created is much smaller. If you like both to be identical size, you can actually specify blocks whenever you create a new LUN.

in order to unbind a LUN your first need to remove it from the storage group.

I have created another raid group more  and LUN for that created group. Everything seems to be the same. I have tried to unbind that LUN but of no avail. When I select Enterprise-Storage-Storage Groups, then select newly created storage  group, and select that particular LUN (only one in the group), click right mouse and choose "Unbind" . That generates: Error:Unbind LUN:"LUN XX is contained within a storage group". I do not know the way to unbind that LUN? Am I missing something?

It works fine with unbind. Ok I have recreated LUN and on USER Capacity of LUN Properties I typed  on User Capacity: 1024 GB, but it did not accept it but generated invalid LUN capacity: "Please enter an integer beween 1 and 917BG". To point to the fact: The first LUN is of  14 disks: SATA|| while the new LUN contains only 4 disks. The disks are 458.6GB capacity. Still, that goes back to raid groups?

It is solved. Thanks

Raid 1/0 - only two disks for total capacity - max size will be 917.13 - you can choose MAX in the size selection field

glen

"fdisk says 984G while Navi says its only 917G.. Something is not tight".. Linux meassure them using 1000 based unit prefixes while Clar does it with 1024 based unix prefixes.