  Thank you Jasonc,      It is already mapped. I just realized I was typing the wrong parameter. I should use "symdev -sid yyy ready zzz"    So I should be using "ready" and not "rw_enable".  After using "ready", disks are available on my windows host.  Thank you.
  This is probably an easy one for the skilled out there. Here is the issue:    I am trying to create some new meta-luns in my DMX4-950 array (microcode version 5772) to present to a windows 2003 host.      Since this array was being used before I came here, there are a lot of meta-luns already created in the array, but most of them are no longer in use and can be deleted.     I proceeded to unmap and unmask the device by using the command "unmap dev XXX from dir all:all devmask_access=remove"    I then tried to dissolve meta XXX, but got an error stating that it should be write-disabled or not-ready before I can dissolve it, so I execute this command: symdev -sid yyy not_ready XXX , and with this, meta XXX became not ready.    I then proceeded with the next command: "dissolve meta dev XXX" , and all was good, the meta was deleted.    I then created some new metas using the devices that I had "liberated" from the dissolved metas.     All these devices remained as "not ready".  I am trying to change this attribute by running "symdev -sid yyy rw_enable zzz" and I get this message: "The device is already in the requested state".   But when I check this device's properties, I see it is still as NR (Not Ready). What am I missing here ???  Thank you for any help !!
How to enable a device in a symmetrix DMX4-950 ?? Help !