SAP HANA is an in-memory database or a database that stores its database tables in RAM. RAM is the fastest possible data storage media available today but it is volatile. This means that when the RAM chips lose power, the data bits on the chip are erased or lost. To avoid data loss, SAP HANA incorporates regular save points using two persistent storage volumes  The first is the database logging or redo log mount. Most SAP HANA hardware vendors will place this file system on a Fusion-IO SLC or MLC nand flash card or use a RAID 10 controller with an array with SSD disks to accommodate this mount. When you write data to SAP HANA, it is written to the logs first then moved into RAM. The log mount should accommodate 100,000+ IOPS. The second mount point is the persistent data storage mount point. This is typically mounted on a standard magnetic…

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  1. TA
    October 16, 2014 at 7:58 am

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