HP 3PAR StoreServ 7400 2-node HP 3PAR Command Line Interface Administrator& - Page 125
Viewing Histograms for Ports, Ethernet ports for Remote Copy.
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You can use additional filters to customize the way the histogram data is displayed. For complete details about histpd command options and for sample command data output, see the HP 3PAR Command Line Reference. NOTE: The device speed number does not represent a rotational speed for SSDs without spinning media. It is meant as a rough estimation of the performance difference between the drive and the other drives in the system. For FC and NL drives, the number corresponds to both a performance measure and actual rotational speed. For an SSD, the number is a relative performance benchmark that takes into account I/O per second, bandwidth, and access time. Viewing Histograms for Ports To view histogram data for ports, issue the histport command. By default, only histogram data for data transfers are displayed. You can optionally display histogram data for control transfers or both data and control transfers by issuing the histport -ctl or histport -both command, respectively. Histogram data output can be further refined to display only port data from: • specific nodes. • specific PCI slots. • specific port slots. • host-connected (target) ports. • disk-connected (initiator) ports. • FC ports (for Remote Copy). • Ethernet ports (for Remote Copy). You can use additional filters to refine the histogram data output and specify how that data is displayed. For complete details about histport command options and for sample command data output, see the HP 3PAR Command Line Reference. Viewing Histograms for VLUNs To view histogram data for VLUNs, issue the histvlun command. Histogram data output can be further refined to display only VLUN data from: • Specific domains. • Sspecific hosts. • Specific virtual volumes. • Specific LUNs. • Ports from specific nodes, slots, or ports. You can use additional filters to refine the histogram data output and specify how that data is displayed. For complete details about histvlun command options and for sample command data output, see the HP 3PAR Command Line Reference. Viewing Histograms for Virtual Volumes To view histogram data for virtual volumes, issue the histvv command. To view histogram data for remote copy virtual volumes, issue the histrcvv command. You can use additional filters to refine the histogram data output and specify how that data is displayed. For complete details about histvv and histrcvv command options and for sample command data output, see the HP 3PAR Command Line Reference. Viewing Histograms 125