HP 3PAR StoreServ 7400 2-node Administrator's Manual

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

HP 3PAR StoreServ 7400 2-node Specifications

General

Brand	HP
Model	3PAR StoreServ 7400 2-node
Category	Storage
Language	English