Recent Posts

November, 2015

  • 27 November

    NetApp – Clustered DATA ONTAP – Write Operations – Part 5

    NetApp - Write Operations - Direct Access

    This article is going to explain about the Netapp write operations. In Clustered Data ONTAP , write request might land on any of the cluster node irrespective of the storage owners. So that data write operations will be either direct access or indirect access. The Write requests will not send to the disks immediately until CP ( consistency point) occurs . NVRAM …

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  • 27 November

    NetApp – Clustered DATA ONTAP – Read Operations – Part 4

    Indirect Data Access - read Operations

    There is a huge difference between DATA ONTAP 7 Mode and C-Mode on  data access methods.  In 7-Mode, we will be having HA pair controllers to access the data. When the request comes , it will go to any one of the HA controllers.  But in C-Mode , Multiple controllers will be aggregated in the cluster and the request might land on …

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  • 23 November

    NetApp – Clustered DATA ONTAP – FAS Series – Part -3

    Single Chassis HA-Pair

    NetApp FAS unified storage arrays available in wide range of configurations to meet the current business needs. Clustered Data ONTAP operating system is available for all the FAS unified storage arrays. Each of the Netapp FAS platforms can be configured with SATA, SAS, or SSD disk shelves, and shelves can be mixed. This allows you to scale performance and capacity independently. Using NetApp FlexArray …

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  • 19 November

    NetApp – Clustered DATA ONTAP – Objects and Components – Part 2

    NetApp Clustered Data ONTAP

    This article is going to explain about the NetApp  clustered DATA ONTAP’s  physical objects and virtual objects.  Physical elements of a system such as disks, nodes, and ports on those nodes―can be touched and seen. Logical elements of a system cannot be touched, but they do exist and use disk space.   For the NetApp beginners , the initial Netapp series …

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  • 17 November

    Solaris 10 – Not booting in New Boot Environment ? Liveupgrade

    Solaris 10 Live upgrade issues and fixes

    I have been dealing with Solaris 10  Live upgrade issues from almost five years but still the new LU patches are not able to fix the common issues like updating the menu.lst file and setting the default boot environment. If the system is configured with ZFS root filesystem, then you have to follow the Live upgrade method for OS patching. Live …

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  • 12 November

    NetApp – Clustered DATA ONTAP – Overview – Part 1

    NetApp Scale-out Capacity

    NetApp is very popular for NAS (Network Attached Storage) from the past decade . In 2002 , NetApp would like to change the NAS tag to SAN. So they have renamed their product lines to FAS (Fabric Attached SCSI) to support both NAS and SAN.  In the FAS storage product lines, NetApp provides the unique storage solution which supports multiple protocols in single …

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October, 2015

  • 28 October

    Openstack – Backup cinder volumes using swift storage

    cinder root volume Bakcup using swift

    This article will demonstrates that how to configure the cinder volumes backup using swift as backend storage. As you all  know that swift is the Object storage  within the openstack project. Swift is highly available , distributed and consistent object storage.  In the previous article ,we have seen that how to make the glance image service to use  swift as backed …

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  • 25 October

    Openstack – Re-Configure Glance to use swift Storage

    Reconfigure Glance Backend storage as swift

    This article will demonstrates that how to re-configure the glance image-service to use backend store as swift object storage. By default , Image service will use the local filesystem to store the images when you are uploading it. The default local filesystem store directory is “/var/lib/glance/images/”  on the system where you have configured the glance image service. In UnixArena tutorial , we have configured the …

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