How to make a shadowed system disk

From: Scott Greig (jsgreig_at_geminaq.com)
Date: 05/21/03 

Date: Wed, 21 May 2003 09:24:44 -0400

Hello all

A few questions on volume shadowing

1) I can't seem to find out how to make a shadowed system disk.

Is it as simple as:

$ MCR SYSGEN
USE CURRENT
SET SHADOW_SYS_DISK=1
SET SHADOW_SYS_UNIT= whatever
WRITE CURRENT
EXIT

...and then reboot?

One rebooted, add other volume(s) to the shadow set?

2) What setting changes (if any) need to be/ can be
made to the console variable BOOTDEF_DEV?
Can this variable be a list of members of a shadowset?

TIA
Scott

Relevant Pages

  • Re: Shadowset =?ISO-8859-15?Q?aufl=F6sen_=28enth=E4lt_Systemplat?= =?ISO-8859-15?Q?t
    ... sicher früher Bestandteil eines Clusters. ... Shadowing hat nicht unbedingt etwas mit Cluster zu tun. ... weil Disks spinnen gerne mal ein paar Stunden ... Du sie nach dem nächsten AUTOGEN mit Reboot wieder zurück... ...
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  • Re: Where do DSA devices come from ?
    ... that the VOLSHAD license is present and the SHADOWING system parameter ... has a value of 2 after reboot. ... setting up volume shadowing. ... volume label, but things worked when I moved it before the volume ...
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  • Re: How to make a shadowed system disk
    ... Maybe the Shadowing Manual will make more sense now. ... >> then run autogen and reboot. ... SHADOW_SYS_UNIT=n tells the system to make the shadowed boot disk DSAn ... You specify the boot disk as the ...
    (comp.os.vms)
  • Re: dynamic volume expansion and different-sized shadow members
    ... This info was in session P078 (OpenVMS Storage & SAN Technical Update) ... "Dissimilar Device Shadowing and Dynamic Volume Expansion ... shadow set whose members differ in size must be running OpenVMS Alpha ... advance of disk technology has made this requirement impractical. ...
    (comp.os.vms)
  • Re: How to make a shadowed system disk
    ... for a shadowed system disk with 2 members and each member having 2 ... >>A few questions on volume shadowing ... lists are not supported in SRM. ...
    (comp.os.vms)