NS0-004 Exam Dumps : NetApp Certified Technology Solutions Professional (NS0-004)

= Active IQ Unified Manager is a tool that enables you to define the performance and storage objectives for a workload using Performance Service Levels (PSLs). You can assign a PSL to a workload when initially creating the workload, or afterwards by editing the workload. The management and monitoring of storage resources are based on Service Level Objectives (SLOs), which are defined by service level agreements that are based on required performance and capacity. Active IQ Unified Manager provides a few predefined PSLs, such as Extreme Performance, Performance, and Value, and also allows you to create your own PSLs to meet your needs. You can also apply the PSLs to multiple clusters and workloads to ensure optimal performance and utilization of the underlying resources. References = Performance Service Levels, Managing Performance Service Levels

 = When provisioning SAN, the host owns the file system. A LUN is a logical unit of storage that is presented to the host as a SCSI device. The host can format the LUN with any file system it supports, such as NTFS, ext4, or XFS. The ONTAP software does not manage the file system on the LUN, but only provides the block-level access to the LUN. The volume is a logical container for one or more LUNs, but it does not own the file system either. References = SAN Concepts, LUNs and Volumes

n = SnapLock is a NetApp feature that provides WORM (write once, read many) functionality at the volume level. WORM storage enables you to retain files in unmodified form for a specified retention period. SnapLock protects WORM files at the file level and prevents them from being modified, even after the retention period has expired. SnapLock is powered by a tamper-proof clock that determines when the retention period for a WORM file has elapsed. SnapLock is available for Cloud Volumes ONTAP systems and supports both NFS and CIFS protocols. References = WORM storage | NetApp Documentation, WORM storage - NetApp