to create a raid-5 device that is striped across four physical spindles you would run this command (substitute for your disk group)

create dev count=1,size=9207,emulation=FBA,config=RAID-5,data_member_count=3,disk_group=0;

this will create one ~8.6G symdev.

I am not sure what you mean by creating two volumes, did you mean windows partitions, Solaris slices ?

Thanks for your reply.

What is size=9207, I would like to present two LUNs to the windows server..

Could be VSA is familiar with CLARiiON, where you first pick drives and make a raid group out of them, and then add LUNs to those RAID groups.

Symmetrix has two flavors of RAID5, 3+1 and 7+1.  These raid types, along with all the others can be mixed on the same drives.

The 9207 is in cylinders, which are 960k each.

You got it, I am Clarion guy.

Thanks for your reply

Is Clarion RAID group is equl to symmetrix Disk Group ?

yes, RG on Clar has a limitation of 16 disks. Not sure what is the limit for DG on SYM

On the CX, a collection of disks get assigned a raid protection, then you carve up LUNs on those.  As far as I know, once you have assigned a raid protection to a set of disks on CX, all the capacity on those disks are that chosen protection.

On Symmetrix, when you create a logical volume,  that creates the hypers or splits on the disk that form the protection.  The rest of the disk is still free to form any other protection type.  The choices are, unprotected (mostly for use as BCVs), RAID1, 3+1, 7+1, 6+2 and 14+2.  All of these could be mixed on the same drives, however that is not the normal practice.

If you need more drives active in your LUN, you can stitch the Symmetrix logical volumes together into a Meta Volume.

The attached document describes the steps required to Map, Mask and Discover an DMX "HyperVolume" to a Server with Symcli Commands.  You could also use EMC Control Center, which is a GUI and a little easier if you have never used these commands before.

The DMX is different than the CLARiiON.  It doesn't have a RAID Group/LUN architecture like the CX has.  It uses HyperVolumes which are sliced out of physical disks.  You dont' create any RAID Groups.  They already exist on the Array.

Use SymCli Commands to add Volumes to Servers.

A.     Outline

1.      Identify HBA WWNs and FA Ports on this Server.

2.      Identify un-mapped HVs/MVs available on DMX.

3.      Identify addresses available on this FA Port.

4.      Use “symconfigure” to assign volumes to FA Port.

5.      Update symcfg database.

6.      Add access with symmask.

7.      Discover on Server.

8.      Add to PowerPath Database.

B.     Commands:

1.      Identify HBA WWNs and FA Ports on this Server.

·         # syminq list hba

·         # inq –hba

·         # symmask list hba

         Identifier        Type   Adapter      Physical Device    Dir:P

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

         50060b000010428c  Fibre  0-0-12-0-0   /dev/rdsk/c10t0d0  04A:0

         50060b0000118076  Fibre  1-0-6-0-0    /dev/rdsk/c11t0d0  13A:0

2.      Identify un-mapped HVs/MVs available on DMX.

·        # symdev list –noport

   # symdev list -noport -cap 8632

   Symmetrix ID: 000xxxxxxxxx

   Device Name      Directors           Device

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

   Sym  Physical     SA DA :IT  Config   Attribute Sts  (MB)

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

   00C6 Not Visible ???:? 16D:C6  BCV   N/Asst'd   RW   8632

   00EB Not Visible ???:? 16A:DA  BCV      N/Asst'd   RW   8632

   00EC Not Visible ???:? 01D:DA  BCV      N/Asst'd   RW   8632

   00ED Not Visible ???:? 16C:DA  BCV      N/Asst'd   RW   8632

   00EE Not Visible ???:? 01B:DA  BCV      N/Asst'd   RW   8632

   0593 Not Visible ???:? 16A:C1  RAID-5   N/Grp'd    RW   8632

   05B3 Not Visible   ???:? 16A:C11 RAID-5   N/Grp'd    RW   8632

   05B4 Not Visible   ???:? 01A:D11 RAID-5   N/Grp'd    RW   8632

   05CD Not Visible   ???:? 16A:D8  RAID-5   N/Grp'd    RW   8632

   05CE Not Visible   ???:? 01A:C8  RAID-5   N/Grp'd    RW   8632

   0655 Not Visible   ???:? 16A:C5  RAID-5   N/Grp'd    RW   8632

   0656 Not Visible   ???:? 01A:D5  RAID-5   N/Grp'd    RW   8632

   06F3 Not Visible   ???:? 01C:D9  Unprtctd  N/Grp'd   RW   8632

   06FC Not Visible   ???:? 01C:CA  Unprtctd  N/Grp'd   RW   8632

   06FD Not Visible   ???:? 16B:CA  Unprtctd  N/Grp'd   RW   8632

   06FE Not Visible   ???:? 01A:CA  Unprtctd  N/Grp'd   RW   8632

   06FF Not Visible   ???:? 16D:CA  Unprtctd  N/Grp'd   RW   8632

3.      Identify addresses available on this FA Port.

·        (Do both “paired” ports.)

·         $ symcfg list -fa 7b -p 0 -sid 1130 -addresses -available

Symmetrix ID: 000xxxxxxxxx

      Director           Device Name          Attr   Address

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

    Ident   Symb.  Port Sym   Physical          VBUS  TID  LUN

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

    FA-7B   07B     0    0040  /dev/sdq        VCM  0   00  000

                         0046  /dev/emcpowerm        0   00  001

                         0047  /dev/emcpowerk        0   00  002

                         0048  /dev/emcpowerj        0   00  003

                         0049  /dev/emcpoweri        0   00  004

                         0641  /dev/emcpowert        0   00  005

                         0642  /dev/emcpoweru        0   00  006

                         0643  /dev/emcpowerv        0   00  007

                         0644  /dev/emcpowerw        0   00  008

                         0645  /dev/emcpowerx        0   00  009

                         00AA  /dev/emcpowerp   (M)  0   00  00A

                         00B0  /dev/emcpowerq   (M)  0   00  00B

                         00B6  /dev/emcpowerr   (M)  0   00  00C

                         00BC  /dev/emcpowers   (M)  0   00  00D

                         -     AVAILABLE            0   00  00E*

    Total                ----

    Mapped Devices:        14

    Incl. Metamembers:     34

    Available Addresses: 4062 (s)

Legend for Available address:

(*): The VBUS, TID, LUN address values represent a gap in the

   address assignments or are the next available address in

   the run

(s): The Available Addresses for a director are shared among

   its ports (shared)

4.      Use “symconfigure” to map volumes to FA Port.

·        This is an HP-UX example:

        ##

        #       add_u62.cmd           SDA  05/28/03

        #

        #       Use  symconfigure to present new HVs:

        #         

        #               symconfigure preview -file add_bcvs.cmd

        #               # symconfigure prepare -file add_bcvs.cmd

        #               symconfigure commit -file add_bcvs.cmd

        #

        #       One group for each of two access paths:

        map dev 04C to dir 04a:0, vbus=1, target=0, lun=0;

        map dev 04D to dir 04a:0, vbus=1, target=0, lun=1;

        map dev 04E to dir 04a:0, vbus=1, target=0, lun=2;

        map dev 04F to dir 04a:0, vbus=1, target=0, lun=3;

        map dev 050 to dir 04a:0, vbus=1, target=0, lun=4;

        map dev 051 to dir 04a:0, vbus=1, target=0, lun=5;

        map dev 052 to dir 04a:0, vbus=1, target=0, lun=6;

        map dev 053 to dir 04a:0, vbus=1, target=0, lun=7;

      #

        map dev 04C to dir 13a:0, vbus=1, target=0, lun=0;

        map dev 04D to dir 13a:0, vbus=1, target=0, lun=1;

        map dev 04E to dir 13a:0, vbus=1, target=0, lun=2;

        map dev 04F to dir 13a:0, vbus=1, target=0, lun=3;

        map dev 050 to dir 13a:0, vbus=1, target=0, lun=4;

        map dev 051 to dir 13a:0, vbus=1, target=0, lun=5;

        map dev 052 to dir 13a:0, vbus=1, target=0, lun=6;

        map dev 053 to dir 13a:0, vbus=1, target=0, lun=7;

      #

5.      Update symcfg database.

·        # symcfg discover

·        # symcfg list –sa 14b –p 0 -addresses

6.      Add access with symmask.

·        Verify this WWN logged in to this FA:

-        # symmask list -wwn $WWN logins

·        Verify that this HV is mapped to this FA:

-         # symdev list -sa $FA -RANGE ${HV}:${HV}

·        Add access:

-        # symmask -wwn $WWN -dir $FA -p 0 add devs $HV –noprompt

·        Set up “alias” in symmaskdb database if not already done.

-         # symmask –sid 5568 –wwn 2100…6333  rename “Server/HBA0”

·        Refresh Symmask Database

-        # symmask refresh

·        Verify Access

-        # symmaskdb list database

7.      Discover on Server.

8.      Add to PowerPath Database

·        # powermt config

·        # powermt save

·        # powermt display