- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - OpenVMS
- >
- Re: Expanding a RAID-5 array
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-04-2009 03:53 PM
тАО02-04-2009 03:53 PM
Expanding a RAID-5 array
If we hot-swap each 9GB drive for an 18Gb drive and let the array rebuild between swaps, we will eventually have a 54Gb array running on the larger drives. with 50% unused space.
Is there any way on VMS to expand the array into the empty space, producing a 108Gb volume?
According to the User Guide for the 5300 series controllers, "Not all operating systems support online capacity extension." Windows apparently does, but what about VMS?
TIA.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-04-2009 05:13 PM
тАО02-04-2009 05:13 PM
Re: Expanding a RAID-5 array
you can use the set volume/limit commands check out the dcl dictionary part 2 pg 322 or do a help on set volume.
http://h71000.www7.hp.com/doc/83final/9996/ovms_83_dcl_ref2.pdf
and also the system managers manual - look for dynamic volume expansion.
HTH
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-04-2009 05:22 PM
тАО02-04-2009 05:22 PM
Re: Expanding a RAID-5 array
You'll have a Smart Array with a 54 GB logical unit configured. You need to expand the Smart Array logical unit.
To have OpenVMS expand into the resized logical unit, see the OpenVMS FAQ at HoffmanLabs.
http://64.223.189.234/node/207
Depending on your use, number of files and directories vs number of headers and initialized number of files, this may be the time to backup to tape, reinitialize and restore to a new unit.
With the current price of disk, why not 36 or 72 gb disks?
Andy Bustamante
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-10-2009 08:07 AM
тАО02-10-2009 08:07 AM
Re: Expanding a RAID-5 array
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-10-2009 08:55 AM
тАО02-10-2009 08:55 AM
Re: Expanding a RAID-5 array
OpenVMS has supported Dynamic Volume Expansion since release 7.3-2.
SET VOLUME/LIMIT can expand properly initialized volumes in place. Used in combination with Host Based Volume Shadowing, OpenVMS can do impressively dynamic migrations of storage.
In 2005 and 2007, I presented "Migrating OpenVMS Storage Environments without Interruption or Disruption" at the HP Technology Forum. The slides form the 2007 presentation can be found at: http://www.rlgsc.com/hptechnologyforum/2007/1512.html
- Bob Gezelter, http://www.rlgsc.com
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-10-2009 09:04 AM
тАО02-10-2009 09:04 AM
Re: Expanding a RAID-5 array
Since we aren't using Volume Shadowing, my question is really: Can you do something similar with hardware-based RAID? It is looking like the answer is no.
Thanks.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-10-2009 09:41 AM
тАО02-10-2009 09:41 AM
Re: Expanding a RAID-5 array
It's been three years so a lot could have changed but I distinctly remembering that this was a function that was possible on Windows (the ACU had an option for it) but not possible for OpenVMS.
For what it's worth...
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-10-2009 09:59 AM
тАО02-10-2009 09:59 AM
Re: Expanding a RAID-5 array
the Smart Array 5300 User Guide is dated from May 2002. OpenVMS V7.3-2, which supportes DVE (Dynamic Volume Expansion) has been released in August 2002.
The Smart Array seems to be able to 'expand' arrays and 'extend' logical volumes (on those arrays).
OpenVMS only sees the logical volume and if the OpenVMS volume had been initialized with a big-enough volume expansion size, you can increase the useable size on the volume (SET VOL/SIZE). If not, you have to use SET VOL/LIMIT (after mounting the disk privately) first.
Note that the Smart array manual 'suggests' a full backup before these operations.
I see a good chance, that this will work with OpenVMS Alpha V8.3.
Volker.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-10-2009 10:04 AM
тАО02-10-2009 10:04 AM
Re: Expanding a RAID-5 array
The Array Configuration Utility available for Tru64 UNIX and OpenVMS are ports of the ACU-XE utility utilized on ProLiant servers. Note that the Volume Extension function provided by the ACU-XE utility for the Smart Array 6400 on ProLiant servers is not enabled in the Tru64 UNIX and OpenVMS versions of the ACU-XE utility.
from:
http://h18002.www1.hp.com/alphaserver/products/storage/sa5300a/sa5300a_qa.html
Volker.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-10-2009 10:40 AM
тАО02-10-2009 10:40 AM
Re: Expanding a RAID-5 array
MSA$UTIL seems to support /EXTEND and /EXPAND qualifiers, so this may be a way to go. See the V8.3-1H1 Relese Notes.
Volker.