Dell PowerEdge External Media System 1434 Improving NFS performance on HPC clu - Page 15

Improving NFS Performance on HPC Clusters with Dell Fluid Cache for DAS The warranty of the device is expressed in number of years and number of Petabytes written (PBW). For the recommended 350GB SSD drive, the standard warranty is 3 years, 25 PBW. The health of the device can be monitored using Dell OMSA utilities. OMSA reports the SSD "Device Life Remaining" and "Failure Predicted". "Device Life Remaining" is an indication of the amount of data written to the device, and is calibrated for the PBW portion of the warranty. It is tracked internally by the SSD. "Failure Predicted" tracks the health of the internal components of the SSD. If failure is predicted, it is recommended that the SSD be replaced. This field does not imply performance degradation but suggests that the SSD is starting to have component failure counts that are higher than the preset thresholds. Example output is shown in Figure 4. For more details refer to [8]. Figure 4. PCIe SSD health [root@nfs-dfc~]# omreport storage controller controller=3 Controller PCIe-SSD SubSystem (Not Available) Controllers ID Status Name : 3 : Ok : PCIe-SSD SubSystem PCIe-SSD Extender ID Status Name State Connector Type Termination SCSI Rate : 0 : Ok : PCIe-SSD Extender : Ready : Non-RAID : Not Applicable : Not Applicable Physical Disks ID Status Name State Power Status Bus Protocol Media Device Life Remaining Failure Predicted Revision Driver Version Model Number : 0:2:0 : Ok : Physical Device 0:2:0 : Ready : Not Applicable : PCIe : SSD : 100% : No : B1490208 : 1.3.7 : DELL_P320h-MTFDGAL350SAH 15