For CBT to identify altered disk sectors since the last change ID, the following items are required:
The host must be ESX/ESXi 4.0 or later.
The virtual machine owning the disks to be tracked must be hardware version 7 or later.
I/O operations must go through the ESX/ESXi storage stack. So NFS is supported, as is RDM in virtual compatibility mode, but not RDM in physical compatibility mode. Of course VMFS is supported, whether backed by SAN, iSCSI, or local disk.
CBT must be enabled for the virtual machine (see below).
Obviously, virtual machine storage must not be (persistent or non-persistent) independent disk, meaning unaffected by snapshots.
For CBT to identify disk sectors in use with the special "*" change ID, the following items are required:
The virtual disk must be located on a VMFS volume, backed by SAN, iSCSI, or local disk. RDM is not VMFS.
The virtual machine must have zero (0) snapshots when CBT is enabled, for a clean start.
In some cases, such as a power failure or hard shutdown while virtual machines are powered on, CBT might reset and lose track of incremental changes. Likewise offline Storage vMotion, but not online Storage vMotion, could reset but not disable CBT.
I am looking to getting the fastest throughput rate from my physical Veeam server to my Exagrid appliance. Adding a 10Gb NIC to each is out of the question for now.
My Veeam server has a FC HBA attached to a Clariion CX4 @4Gbps. The Veeam server also has 2 physical 1Gb NICs teamed together using HP's teaming software for backup traffic to the Exagrid appliance. The Team is set to use Transmit Load Balancing with Fault Tolerance (TLB) and Windows reports a 2Gb connection speed. The Exagrid has 2, 1GB NICs each with separate IP addresses.
All the Veeam jobs use the SAN method for backups. Half the jobs are setup to use 1 Exagrid IP address, the other half use the 2nd Exagrid IP address. A lot of the jobs run concurrently. I want Veeam to fully utilize the 2Gb NIC Team during backups and make the backups as fast as possible. Is this the best way to accomplish this?
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