Re: 11gR2 San Migration - OCR Disk Group
- From: Ls Cheng <exriscer@xxxxxxxxx>
- To: dbmangler@xxxxxxxxx
- Date: Fri, 6 Apr 2012 20:15:04 +0200
Hi
I did this a year ago migrating OCR Disk Group from DS8000 to XIV SAN no
downtime.
First add new disk for each failure group in OCRDATA Disk Group:
alter diskgroup ocrdata add failgroup OCRDATA_0000 disk '/dev/rhdisk29'
name OCRDATA_0004;
alter diskgroup ocrdata add failgroup OCRDATA_0001 disk '/dev/rhdisk30'
name OCRDATA_0005;
alter diskgroup ocrdata add failgroup OCRDATA_0002 disk '/dev/rhdisk31'
name OCRDATA_0006;
Second drop disk in OCRDATA (also checking voting disks location):
bd1cpp:root/root#> /u01/grid/11.2.0.2/bin/crsctl query css votedisk
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE 429c50a1cb144f1bbff964bad247664d (/dev/asm_ocr_bd1_dsk1)
[OCRDATA]
2. ONLINE 0e3d1c015ed44fe5bfa33b4d802abf46 (/dev/asm_ocr_bd1_dsk2)
[OCRDATA]
3. ONLINE 421c5c9df8ac4feabf867753ed590b88 (/dev/asm_ocr_bd2_dsk1)
[OCRDATA]
alter diskgroup ocrdata drop disk 'OCRDATA_0001';
bd1cpp:root/u01/app#> /u01/grid/11.2.0.2/bin/crsctl query css votedisk
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE 429c50a1cb144f1bbff964bad247664d (/dev/asm_ocr_bd1_dsk1)
[OCRDATA]
2. ONLINE 421c5c9df8ac4feabf867753ed590b88 (/dev/asm_ocr_bd2_dsk1)
[OCRDATA]
3. ONLINE 03bf1809585d4faebf03c2926580c144 (/dev/rhdisk30) [OCRDATA]
alter diskgroup ocrdata drop disk 'OCRDATA_0000';
bd1cpp:root/u01/app#> /u01/grid/11.2.0.2/bin/crsctl query css votedisk
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE 421c5c9df8ac4feabf867753ed590b88 (/dev/asm_ocr_bd2_dsk1)
[OCRDATA]
2. ONLINE 03bf1809585d4faebf03c2926580c144 (/dev/rhdisk30) [OCRDATA]
3. ONLINE 60a296b270384fe9bf9aee104d363b02 (/dev/rhdisk29) [OCRDATA]
alter diskgroup ocrdata drop disk 'OCRDATA_0002';
bd1cpp:root/u01/app#> /u01/grid/11.2.0.2/bin/crsctl query css votedisk
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE 03bf1809585d4faebf03c2926580c144 (/dev/rhdisk30) [OCRDATA]
2. ONLINE 60a296b270384fe9bf9aee104d363b02 (/dev/rhdisk29) [OCRDATA]
3. ONLINE 5dccabe580bb4f24bf048b91e92f5ffc (/dev/rhdisk31) [OCRDATA]
Thanks
On Fri, Apr 6, 2012 at 4:35 PM, Jeff Thomas <dbmangler@xxxxxxxxx> wrote:
> Running 11.2.0.2.5 RAC on Linux x86. We are migrating to a new SAN.
> With respect to the OCR diskgroup, which is defined with 3 disks with
> normal redundancy, I do know how to migrate the OCR/voting files/ASM
> spfile to a new OCR diskgroup if need be.
> What I wonder if anyone has migrated the OCR diskgroup by simply adding the
> new disks and dropping the old ones? Is Oracle smart enough
> to copy the 3 voting files over to the new disks, so that's there no outage
> whatsoever when migrating to the new SAN?
>
> Best,
> Jeff
>
>
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>
>
>
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