what is true image?

[Kums]

Step 1: Write suspend for database.

Connect to database.
Issue the following command:
db2 set write suspend for database

Step 2: Create True Image
Create a True Image of the required NAS Volumes.

Step 3: Write resume for database.
Issue the following command:
db2 set write resume for database

Can someone elaborate how to take a true image...is it the normal
backup referred as true image?

Thanks for your time.

[XiaoLu Wang]

"Kums" <hi****@gmail.com> ????
news:ca**************************@posting.google.c om...

Step 1: Write suspend for database.

Connect to database.
Issue the following command:
db2 set write suspend for database

Step 2: Create True Image
Create a True Image of the required NAS Volumes.

Step 3: Write resume for database.
Issue the following command:
db2 set write resume for database

Can someone elaborate how to take a true image...is it the normal
backup referred as true image?

Thanks for your time.

This is not a DB2 term, but a term of storage system. It provide a virtual
copy of whole storage volume and is used to restore data.
Maybe you can use PSM(Persistence storage manager) to create true image.
I am not skilled at storage system, so above information is just a
reference.

[Mark Yudkin]

It's a "full volume dump", and is not part of DB2. Rather it is supplied by
your NAS supplier or as a third party add on thereto.

I'd recommend using a DB2 backup, even if you have volume saves. I'd also
strongly recommend against using NAS - in fact, I was under the impression
that DB2 didn't work on NAS - it definitely isn't supported.
"Kums" <hi****@gmail.com> wrote in message
news:ca**************************@posting.google.c om...

Step 1: Write suspend for database.

Connect to database.
Issue the following command:
db2 set write suspend for database

Step 2: Create True Image
Create a True Image of the required NAS Volumes.

Step 3: Write resume for database.
Issue the following command:
db2 set write resume for database

Can someone elaborate how to take a true image...is it the normal
backup referred as true image?

Thanks for your time.

[Ian]

Mark Yudkin wrote:

It's a "full volume dump", and is not part of DB2. Rather it is supplied by
your NAS supplier or as a third party add on thereto.

I'd recommend using a DB2 backup, even if you have volume saves. I'd also
strongly recommend against using NAS - in fact, I was under the impression
that DB2 didn't work on NAS - it definitely isn't supported.

Certain NAS configurations are supported (NetApp Filer is one)! You
have to have certain code levels on server and NAS device, and of course
you must have enough bandwidth to support this.

Using the DB2 backup is key, though. My experience has always been that
the snap/shadow/etc. copy of the database is made available to a
separate host, where the database is brought up (using db2inidb) and
then backed up via BACKUP DATABASE.

[Mark Yudkin]

My understanding of the DB2 documentation is that only very specific
solutions are supported, mostly from IBM (or of the iSCSI type) and subject
to a range of caveats.

"Ian" <ia*****@mobileaudio.com> wrote in message
news:41**********@newsfeed.slurp.net...

Mark Yudkin wrote:

It's a "full volume dump", and is not part of DB2. Rather it is supplied
by your NAS supplier or as a third party add on thereto.

I'd recommend using a DB2 backup, even if you have volume saves. I'd also
strongly recommend against using NAS - in fact, I was under the
impression that DB2 didn't work on NAS - it definitely isn't supported.

Certain NAS configurations are supported (NetApp Filer is one)! You
have to have certain code levels on server and NAS device, and of course
you must have enough bandwidth to support this.

Using the DB2 backup is key, though. My experience has always been that
the snap/shadow/etc. copy of the database is made available to a
separate host, where the database is brought up (using db2inidb) and
then backed up via BACKUP DATABASE.