what does IT mean in the "symdev list"out put

I is the interface and T is the TID.

i believe it's interface

And T = Target. 

All of you,

Thanks for reply.

I think it stands for Interface

John,

what does TID stand for ?

Hi,

DA:IT refers to the drive location where your device is actually storing data on the symmetrix. IT means interface.

we have upto 16 directors on a symm. Not all will be DA directors, physical drives are accessed only by DA directors.

A drive location in a symmetirx is written in this format

Director - Processor(a,b,c,d) - Loop(Port 0/1 or C/D) - Loop interface

for a drive eg 01A:D19, 1 is the DA director, A is the processor or DA slice, D is the port or loop. 19 is the drive location on that port. therefore the drive is located on director 1A interface is D19 which means port 1 drive no. 19 on the port.

Please email me at anuj.goyal@emc.com if you have further queries on the same.

Hi AJ,

Thanks for ur reply.But Aj can u please explain me how to identify disks in DMX.In clariion we

can identify by Busnumber,DAE number and disk number(BUS 0,DAE 1,DISK 5).In symmerix how to 

do this.If availble please explain using a picture.Also in your above explaination I could understand only upto

Director - Processor(a,b,c,d) ,I could not understand about  - Loop(Port 0/1 or C/D) - Loop interface.Because most of

the documents I read explained upto directors and 4 processor but I could not find explaination of backend

architechture between DA and disks In DAE in storage bay.Hope this ouput helps u in explaining it.

E:\Program Files\EMC\SYMCLI\bin>symdisk list -disk_group 1 |more

Symmetrix ID                 :

Disks Selected               : 216

Disk Group                   : 1

Disk Group Name              : DISK_GROUP_001

Technology                   : N/A

Speed (RPM)                  : 15000

                                                         Capacity(MB)

Ident  Symb Int TID Vendor     Type       Hypr   Total       Free      Actual

------ ---- --- --- ---------- ---------- ---- ---------- ---------- ----------

DF-1A  01A    C   0 SEAGATE    H146156      19     140014      12744     140014

DF-1A  01A    C   2 SEAGATE    H146156      19     140014      12744     140014

DF-1A  01A    C   4 SEAGATE    H146156      19     140014       6237     140014

DF-1A  01A    C   6 SEAGATE    H146156      19     140014       6237     140014

DF-1A  01A    C   8 SEAGATE    H146156      19     140014       6237     140014

DF-1A  01A    C   A SEAGATE    H146156      19     140014       6237     140014

DF-1A  01A    C   C SEAGATE    H146156      18     140014       9146     140014

Hi, There is a section in the DMX product guide that explains the redundant connectivity between the Disk Director and the physical disks. Take a look at the "Reliability and Availability features" section to assist  your understanding of the back-end architecture. There is an illustration in this section on dual initiators showing how disk directors connect to physical disks.

Hi Jasonc,

Thanks for reply.I found the document and the section u sggested.

Thanks for Helping out GTX...My colleague just answered everything...

Hi GTX,

Thank you very much in taking time for this clear explaination.This very helpful to me in understanding.

Hi there,

I am new to the community. may I know what is meant by grp'd and n/ grp'd attributes ?