August 18, 2019 Vignesh Sathiyanantham

When I am setting up the Disaster recovery plan for the MS SQL Databases in ZFS Volume, I faced permission issue while running ZFS send/receive command from a non-root account root@vigneshzfs:/home/vignesh# sudo zfs send sql-pool/disk1@aug18 | ssh ubuntu@10.7.8.25 zfs recv aws-pool/sql-pool-aug18 ubuntu@10.7.8.25’s password: cannot receive new filesystem stream: permission denied So my sender is vignesh and the receiver is ubuntu both are a non-root account On the sender side, I used these permissions sudo zfs allow -u vignesh send,snapshot,hold sql-pool And on the receiver side sudo zfs allow -u ubuntu compression,mountpoint,create,mount,receive aws-pool After setting up this permission I can send…

August 15, 2019 Vignesh Sathiyanantham

RAID with any filesystem / Storage array or with JBOD it comes with three main benefits. PerformanceCapacityIntegrity Performance is how fast you can access the data / write the data into the filesystem and it is measured with Input / Output per second aka IOps and usually measured in megabyte per second and millisecond of latency Capacity is how much it can hold your data, usually GBs to PBs Integrity is how many disks can fail before you lose all the data, The main problem of the RAID is you cannot get all the three benefits, to get one you…

August 15, 2019 Vignesh Sathiyanantham

In this post, we will see how to install ZFS on Ubuntu and present a ZVOL through iSCSI protocol to a Windows Machine for SQL Database First I created a Linux Ubuntu x64 Virtual Machine and installed the Ubuntu 18.04 Server using the server iso file available in the Ubuntu website After installing the Ubuntu, configured the static IP and installed openssh-server sudo apt-get install openssh-server Then I proceed to install the ZFS File system in my mint ubuntu Install Software properties common sudo apt-get install software-properties-common First, you have to make sure that main, restricted, universe and multiverse software…

January 18, 2019 Vignesh Sathiyanantham

When we are deploying our Nimesa Appliance and running on client environment, we noticed that there are no disk serial number for virtual disks on Windows server 2016, later we came to know that deployment of Windows Server 2016 happened using deprecated vSphere thick client As per the VMware KB article, If the VM is not created with vSphere WebClient, the advanced parameter “disk.EnableUUID” is not set. and we have noticed this issue happening only with Microsoft Windows Server 2016 not in Windows 2k12 and 2K12 R2 In this scenario, we have to set the enable the disk UUID for…