OCR is automatically backed

OCR is automatically backed up physically:
Every four hours: CRS keeps the last three copies.
At the end of every day: CRS keeps the last two copies.
At the end of every week: CRS keeps the last two copies

[oracle@rac2 ~]$ ocrconfig -showbackup

rac2 2010/10/04 10:29:12 /u01/app/oracle/product/crs/cdata/crs

rac2 2010/10/04 06:29:11 /u01/app/oracle/product/crs/cdata/crs

rac2 2010/10/04 02:29:11 /u01/app/oracle/product/crs/cdata/crs

rac2 2010/10/03 02:29:07 /u01/app/oracle/product/crs/cdata/crs

dbrac1 2010/09/17 04:17:06 /u01/app/oracle/product/crs/cdata/crs
[oracle@rac2 ~]$ cd /u01/app/oracle/product/crs/cdata/crs
[oracle@rac2 crs]$ ls -ltr
total 27916
-rw-r--r-- 1 root root 4079616 Jun 13 02:16 week.ocr
-rw-r--r-- 1 root root 4079616 Sep 29 00:58 week_.ocr
-rw-r--r-- 1 root root 4079616 Oct 3 02:29 day.ocr
-rw-r--r-- 1 root root 4079616 Oct 4 02:29 day_.ocr
-rw-r--r-- 1 root root 4079616 Oct 4 02:29 backup02.ocr
-rw-r--r-- 1 root root 4079616 Oct 4 06:29 backup01.ocr
-rw-r--r-- 1 root root 4079616 Oct 4 10:29 backup00.ocr