I recently had a bad crash on my vSphere lab, and I had to restart by hand all the VMs hosted in it. Once everything was restarted and all services seem to be correctly up and running, I wanted to upgrade a couple of ESXi server with the latest patches,…
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vCenter customization wizard for CentOS
Customazion Wizard is a really cool feature in vCenter, but I often found many customers not using it, mainly because they do not even know it exists, or because they had a weak knowledge about how to use it. This is even more true if the template is a linux…
The “Real” maximum size of a VMDK file
What is the biggest size of a VMDK file? “2TB – 512 bytes” This has always been the official answer, and you would find this same answer in blogs, VMware communities, and other sources. The fact is: this answer is completely correct, but in a “real world environment” is wrong….
Veeam repository, memory consumption, RamMap and CacheSet
I got recently some jobs suddenly failing in one of our Veeam repository servers. the error message was: Error: Client error: Cannot allocate memory for an array. Array size: [4198400]. After some checks, a strange situation arised: the sum of all the processes visible in the task manager was far…
Freeze your backups into AWS Glacier
Amazon Web Services has recently added to its impressive lineup of cloud services a new storage solution, named Glacier. As per their presentation: Amazon Glacier is an extremely low-cost storage service that provides secure and durable storage for data archiving and backup. In order to keep costs low, Amazon Glacier…
Veeam VESS series 5: Instant VM recovery via LeftHand snapshots
In the previous posts, I explained how to configure and use Veeam Explorer for SAN Snapshots to create san-based snapshots of your VMs and make them available directly inside Veeam Backup & Replication (VBR). Now it’s time for the last post: how to use them to do restore operations. One…
Veeam VESS series 4: Configure and browse LeftHand snapshots inside Veeam Backup & Replication
In the previous posts of this series, we completed the configuration on the HP leftHand side. This time, we are going to configure VESS itself. Network Connection LeftHand storage has no dedicated management interface. This has always created debates among its users, since many smaller storages has this opportunity….
Veeam VESS series 3: configure HP LeftHand snapshots
In the previous post of this series, I showed you how to check and properly configure your environment to be sure you can safely use storage snapshots. This time, I will show you how to configure and monitor snapshots on HP LeftHand. Create your LUN Snapshot schedule Once your…