Healthy mirror on Solaris 10 Post: 302759475

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Operating Systems Solaris Healthy mirror on Solaris 10 Post 302759475 by bakunin on Tuesday 22nd of January 2013 11:01:37 AM

01-22-2013

Registered User

Quote:

Originally Posted by top.level

is there any problem to keep my system running with one mirror and another one will be mirrored every one time every week ?

In principle you can do that, because mirrors are meant to work even if one part of it is missing (otherwise there would be no point in mirroring, no?). On the other hand you will run the whole week with only one mirror and if something happens to this disk your system will eventually crash, whereas it would continue to work with the mirror in place.

Do not confuse things: a backup is a device for data integrity, a mirror is a device for data security. If you want only the one and not the other you can do what you described but to have both you should consider having three copies one of which you detach and set aside as backup.

Btw., i presume it would be easier and less cost-intensive to backup the conventional way and use tapes instead of this rather tricky setup. You will have a longer downtime if your system needs recovery (restoring from tape is slower than to activate the backup disk) but tapes are on average cheaper than disks and you can even store several generations of backups, which is not possible with one disk - you would need awful lots of disk drives for this which quickly makes it unfeasible.

I hope this helps.

bakunin

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LEARN ABOUT MOJAVE

suninstall

suninstall(1M)                                            System Administration Commands                                            suninstall(1M)

NAME

       suninstall - install the Solaris operating system

SYNOPSIS

       suninstall

DESCRIPTION

       install-solaris(1M) is now the preferred command for starting and restarting the Solaris Installation program. It should be used instead of
       suninstall. suninstall is symbolically linked to install-solaris.

       suninstall is a forms-based and graphical subsystem for installing the operating system.

       suninstall exists only on the Solaris installation media (CD or DVD) and should only be invoked from there. Refer to the Solaris 10 Instal-
       lation Guide: Basic Installations for more details.

       suninstall allows installation of the operating system onto any standalone system. suninstall loads the software available on the installa-
       tion media. Refer to the Solaris 10 Installation Guide: Basic Installations for disk space requirements.

USAGE

       Refer to the Solaris 10 Installation Guide: Basic Installations for more information on the various menus and selections.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcdrom (Solaris  instal-  |
       |                             |lation media)                |
       +-----------------------------+-----------------------------+

SEE ALSO

       pkginfo(1), install(1M), install-solaris(1M), pkgadd(1M), attributes(5)

       Solaris 10 Installation Guide: Basic Installations

NOTES

       It is advisable to exit suninstall by means of the exit options in the suninstall menus.

SunOS 5.10                                                          9 Sep 2004                                                      suninstall(1M)