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List:       veritas-ha
Subject:    RE: [Veritas-ha] Diskgroup sharing under VCS
From:       Jim Senicka <jsenicka () veritas ! com>
Date:       2000-09-19 13:07:37
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Mike,
I'll get you a definitive answer, but to the best of my knowledge,
this feature is supported under Sun Cluster only at this time.
VERITAS will be releasing the CVM functionality in VCS to coincide 
with the release of the SANPoint Filesystem, our new shared
read/write filesystem. (later this year)



jim
          


-----Original Message-----
From: Michael Traves [mailto:mtraves.news@home.com]
Sent: Tuesday, September 19, 2000 5:17 AM
To: Jim Senicka; veritas-ha@mailman.eng.auburn.edu;
veritas-vx@mailman.eng.auburn.edu
Subject: Re: [Veritas-ha] Diskgroup sharing under VCS


In the installation guide for VxVM it discusses the option to "Enable
Cluster Support in Volume Manager" and how to configure shared disks.
Reference is made to SUN Cluster software only -- does that mean I can do
what I want, but only in conjunction with SUN's HA product, and not
Veritas's?  Or am I reading the manual wrong?  (pg43 of install guide,
v3.0.1)


----- Original Message -----
From: "Jim Senicka" <jsenicka@veritas.com>
To: "'Michael Traves'" <mtraves.news@home.com>;
<veritas-ha@mailman.eng.auburn.edu>; <veritas-vx@mailman.eng.auburn.edu>
Sent: Tuesday, September 19, 2000 7:58 AM
Subject: RE: [Veritas-ha] Diskgroup sharing under VCS


> Mike,
> absolutely not.
>
> Importing on multiple hosts with the current edition of VM
> could lead to potential corruption of the private region.
> The possible solutions include:
> VERITAS Cluster Volume Manager (later this year)
> VERITAS SANPoint Appliance. (Available now. This would attach your
> storage to a system (or systems for HA) and present your storage
> as RAID luns on a SAN.
>
> In any case, VCS goes out of it's way to prevent (as it should)
> you from having the same DG imported on both systems.
>
> jim
>
>
> Jim Senicka
> Solution Development
> Clustering and Replication
> VERITAS Software         Email: jsenicka@veritas.com
> 9 Meadow Lane              Direct phone: 757-766-0200
> Hampton, VA 23666       Fax: 757-865-8490
>
>
>
> -----Original Message-----
> From: Michael Traves [mailto:mtraves.news@home.com]
> Sent: Monday, September 18, 2000 4:14 PM
> To: veritas-ha@mailman.eng.auburn.edu; veritas-vx@mailman.eng.auburn.edu
> Subject: [Veritas-ha] Diskgroup sharing under VCS
>
>
> Is it possible to have one DiskGroup imported (accessible) by two hosts in
a
> Cluster (VCS), where each host has access to *separate* volumes?  No data
> sharing is implied nor intended.  Each volume corresponds to separate
> applications which VCS would fail from host to host individually, thereby
> using only a small "slice" of a physical disk, as opposed to the an entire
> physicl disk (if they were in separate disk groups).
>
> I have a limited number of high-density disks (36GB), where the distinct
> applications I'm trying to fail may only take up a few MB's of space, thus
> I'd rather not dedicate a mirrored pair to each distinct application (just
a
> slice of them).
>
>
> Cheers,
>
> Mike
>
>
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