ORA-19511: Error received from media manager layer,

I am trying to restore the database in different host server and getting following error, event its same for control file restore. Please advise.

RMAN> run

2> {

3> allocate channel t1 device type 'sbt_tape';

4> SEND 'NSR_ENV=(NSR_SERVER=xxxx,NSR_CLIENT=xxxxxx)';

5> restore spfile to '/home/oracle/p.ora' from autobackup;

6> }

allocated channel: t1

channel t1: SID=95 device type=SBT_TAPE

channel t1: NMO v5.0.0.0

sent command to channel: t1

Starting restore at 28-NOV-11

channel t1: looking for AUTOBACKUP on day: 20111128

channel t1: AUTOBACKUP found: c-4079608341-20111128-02

channel t1: restoring spfile from AUTOBACKUP c-4079608341-20111128-02

released channel: t1

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03002: failure of restore command at 11/28/2011 14:59:08

ORA-19870: error while restoring backup piece c-4079608341-20111128-02

ORA-19507: failed to retrieve sequential file, handle="c-4079608341-20111128-02", parms=""

ORA-27029: skgfrtrv: sbtrestore returned error

ORA-19511: Error received from media manager layer, error text:

   The function nsr_bind_recov_mm() failed with the error: Remote system error (1:5:111)

RMAN> exit