Any ideas how to accomplish this storage move? Post: 302360368

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Top Forums UNIX for Advanced & Expert Users Any ideas how to accomplish this storage move? Post 302360368 by keelba on Thursday 8th of October 2009 05:26:05 PM

10-08-2009

Registered User

Any ideas how to accomplish this storage move?

We have a datacenter in another part of the country with about a 100Mb WAN between that datacenter and the local datacenter. The remoted datacenter has about 20TB of data on roughly 75 servers that all must be moved to this datacenter with minimal downtime. Please help me come up with the best way to move this data. We figure if we can get maximum throughput on the WAN that we might be able to copy 300-400 GB per day.

Problems:
Downtime should be minimal from a few hours to a couple of days.
Most applications are live databases.

One thought I had was to use iSCSI to mount local disks to the remote servers then use EMC's OpenMigrator to sync the disks. This way the sync can happen in the background and take weeks if necessary. We can tune OpenMigrator to not put too much stress on the network and we will not have to impact the running applications. The problem with this is that our DMX does not currently support iSCSI and according to our storage admin it would be too cost prohibitive.

Another option is to try rsync to sync the data. Obviously, we would shutdown the database on the day of the move and only sync the delta but I am concerned it will have trouble syncing the live database.

We could try NFS but there is no easy way of synchronizing the incremental data on the day of the move. Also, NFS is prohibited in my company for security reasons.

Does anyone have any other suggestions or know of other products that could handle a server to server copy?

keelba

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LEARN ABOUT DEBIAN

gldeletesync

GLDELETESYNC(3G)						  [FIXME: manual]						  GLDELETESYNC(3G)

NAME

       glDeleteSync - delete a sync object

C SPECIFICATION

       void glDeleteSync(GLsync sync);

PARAMETERS

       sync
	   The sync object to be deleted.

DESCRIPTION

       glDeleteSync deletes the sync object specified by sync. If the fence command corresponding to the specified sync object has completed, or
       if no glWaitSync() or glClientWaitSync() commands are blocking on sync, the object is deleted immediately. Otherwise, sync is flagged for
       deletion and will be deleted when it is no longer associated with any fence command and is no longer blocking any glWaitSync() or
       glClientWaitSync() command. In either case, after glDeleteSync returns, the name sync is invalid and can no longer be used to refer to the
       sync object.

       glDeleteSync will silently ignore a sync value of zero.

NOTES

       glSync is only supported if the GL version is 3.2 or greater, or if the ARB_sync extension is supported.

ERRORS

       GL_INVALID_VALUE is generated if sync is neither zero or the name of a sync object.

SEE ALSO

       glFenceSync(), glWaitSync(), glClientWaitSync()

COPYRIGHT

       Copyright (C) 2010 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

[FIXME: source] 						    05/30/2012							  GLDELETESYNC(3G)