[Info-vax] simple(?) shadowing question

[Keith Parris]

Phillip Helbig---remove CLOTHES to reply wrote:
> In article
> <b7167b52-168f-4794-b972-9445e6c81e80 at q30g2000prq.googlegroups.com>,
> Volker Halle <volker_halle at hotmail.com> writes: 
>>During SYSHUTDWN.COM issue a DISM/POL=MINI
>>DISK2 to NODE1 (using SYSMAN), if you shut down NODE2. This will cause
>>a creation of a mini-copy Write Bitmap for DISK2 on NODE1 and will
>>just cause a mini-copy to happen, if you remount DISK2 into the
>>shadowset afer the reboot - even if it takes longer than
>>SHADOW_MBR_TMO. And it will not cause IOs to the shadowset to be
>>stalled while NODE2 is down.
> 
> Right, but that's for a planned reboot.

As of version 8.3, you can also use Mini-Copy operations to recover from 
unplanned outages. If you set up the Host-Based Mini-Merge (HBMM) policy 
so that a Multi-Use bitmap is available, Shadowing can automatically 
convert a Mini-Merge write bitmap into one it can use for a Mini-Copy 
operation to recover. See the 8.3 New Features info at 
http://h71000.www7.hp.com/doc/83final/6679/6679pro_007.html and/or the 
VTJ V11 article at 
http://h71000.www7.hp.com/openvms/journal/v11/hbmm_amcvp_openvms_shadowing.html 
for more details on Automatic Minicopy on Volume Processing (AMCVP).