Backup & Recovery :: Data Files Backed Up To FRA Instead Of Specified Location?

I am trying to backup my entire database's files :

[oracle@testing-oracle-1 ~]$ rman target /
Recovery Manager: Release 11.2.0.1.0 - Production on Mon Jun 24 16:09:54 2013
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
connected to target database: ORCL (DBID=1341263457)
RMAN> list backup;

using target database control file instead of recovery catalog specification does not match any backup in the repository

RMAN> CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters:
CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters are successfully stored
RMAN> CONFIGURE CONTROLFILE AUTOBACKUP FORMAT
FOR DEVICE TYPE DISK TO '/u01/app/oracle/backupsets/control_files/cf_%F.BCKP';2>

[code]....

I see that a backup set was created to "/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_06_24/" , in spite of my specification.

So I asked RMAN to list all the backups I have:

RMAN> list backup;

List of Backup Sets
===================
BS Key Size Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ ---------------
1 41.14M DISK 00:00:00 24-JUN-13
BP Key: 1 Status: AVAILABLE Compressed: NO Tag: TAG20130624T161025
Piece Name: /u01/app/oracle/backupsets/818957425_1_%r.BCKP

[code]....

Here I see that 4 backup sets have been created.The backup sets 1 & 3 containing the archived redo logs (818957425_1_%r.BCKP and 818957451_3_%r.BCKP) are placed as I wanted in /u01/app/oracle/backupsets/ dir.

The file containing the Control File and Spfile (cf_c-1341263457-20130624-00.BCKP) is placed as I wanted in /u01/app/oracle/backupsets/control_files/ dir.However, The backup set file containing the data files(o1_mf_nnnd0_TAG20130624T161026_8wjkb2tg_.bkp) is placed under the directory /u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_06_24/ ,and I don't understand why.

When I backup my database without the archived redo logs - it is saved correctly:

RMAN>
RMAN> delete backup;
using channel ORA_DISK_1
List of Backup Pieces
BP Key BS Key Pc# Cp# Status Device Type Piece Name

[code]....

1. Why aren't my data files backed up to the location I specified when I backup using PLUS ARCHIVELOG syntax?

2. Why are my redo logs saved to two different backup sets and not just one?

3. Is there a way to combine backup of all files (data files, control file, spfile, redo logs & arch redo's) in one backup set, one file?