[Info-vax] SSSU command ?

[Forster, Michael]

There is no other way to do CLONES.

COPY is a CLONE - complete standalone LUN.
SNAPSHOT is not a CLONE and requires the source disk - the SNAP tracks changes to the source (copy on write).

So what is your goal?

I like clones since they can be used even if the source was corrupted or deleted. Though I wouldn't use RAID0 for a clone - perhaps maybe for a SNAP.

Snaps of busy, changing source disks add overhead to the array, more so as time and changes progress from the initial snap start to when you delete the snap.

What are you referring to as "30 minutes"?

Total COPY time for three disks? I don't know the size however you are using pre-built containers so that helps on COPY time.

CACHE freeze time?



-----Original Message-----
From: Info-vax [mailto:info-vax-bounces at rbnsn.com] On Behalf Of pcoviello at gmail.com
Sent: Tuesday, October 23, 2012 10:07 AM
To: info-vax at rbnsn.com
Subject: Re: [Info-vax] SSSU command ?
Importance: Low

On Monday, October 22, 2012 10:27:05 AM UTC-4, pcov... at gmail.com wrote:
> hi, could someone let me know if there is a better way in trying to do clones for backups than what is below.
> 
> 
> 
> thanks
> 
> Paul 
> 
> 
> 
> SET VDISK "\Virtual Disks\Vdisk3000" WRITECACHE="writethrough"
> 
> SET VDISK "\Virtual Disks\Vdisk3110" WRITECACHE="writethrough"
> 
> SET VDISK "\Virtual Disks\Vdisk3200" WRITECACHE="writethrough"
> 
> 
> 
> ADD COPY "\Virtual Disks\Vdisk3000clone" CONTAINER="\Virtual Disks\Vdisk3000clone" Vdisk="\Virtual Disks\Vdisk3000" OS_UNIT_ID=6000 redundancy=VRAID0 NOWAIT
> 
> ADD COPY "\Virtual Disks\Vdisk3110clone" CONTAINER="\Virtual Disks\Vdisk3110clone" Vdisk="\Virtual Disks\Vdisk3110" OS_UNIT_ID=6110 redundancy=VRAID0 NOWAIT
> 
> ADD COPY "\Virtual Disks\Vdisk3200clone" CONTAINER="\Virtual Disks\Vdisk3200clone" Vdisk="\Virtual Disks\Vdisk3200" OS_UNIT_ID=6200 redundancy=VRAID0 NOWAIT
> 
> 
> 
> ADD LUN 11 VDISK="\Virtual Disks\Vdisk3000clone" HOST="\Hosts\FACST1_1"
> 
> ADD LUN 13 VDISK="\Virtual Disks\Vdisk3110clone" HOST="\Hosts\FACST1_2"
> 
> ADD LUN 14 VDISK="\Virtual Disks\Vdisk3200clone" HOST="\Hosts\FACST1_1"



my concern is whether or not ADD COPY is the right command. is ADD SNAPSHOT better/faster?  30 minutes for my production disks seem like a long time.

thanks
Paul 
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