Displaying iSCSI statistics

Server and Cluster Administration Guide for Hitachi NAS Platform

Version
15.1.x
Audience
anonymous
Part Number
MK-92HNAS010-35
The iSCSI Statistics page provides a summary of the iSCSI and SCSI requests on a NAS server/cluster node. These statistics are updated every 10 seconds.
  1. Navigate to Home > File Services > iSCSI Statistics to display the iSCSI Statistics page.


    Field/Item Description
    Cluster Node For a cluster node, the node is shown in the Cluster Node field. You can change nodes by clicking the change button.
    Last Reset The date and time that the statistics on this page were last reset.
    reset Click to reset to zero the values displayed on this page.
    Last Refreshed The date and time that the statistics on this page were last refreshed. The page automatically refreshes every 10 seconds.
    Current Sessions The number of iSCSI sessions currently hosted by the server.
    Current Connections The current number of iSCSI connections to the server.
    iSCSI Requests
    NopOut No operation.
    SCSICommand Carries a SCSI command.
    TaskManagement Requests used for task management functions.
    Login Login requests.
    Text Requests used to negotiate behavior.
    SCSIDataOut Requests containing SCSI data.
    Logout Logout requests.
    SCSI Requests
    TEST UNIT READY Tests that the target is ready to receive commands.
    REQUEST SENSE Requests state information.
    FORMAT UNIT Formats an LU.
    READ(6) Reads data.
    WRITE(6) Writes data.
    INQUIRY Requests device information.
    MODE SELECT(6) Configures SCSI behavior.
    RESERVE(6) Reserves (locks) an LU for exclusive access.
    RELEASE(6) Releases (unlocks) an LU reservation.
    MODE SENSE(6) Requests SCSI configuration information.
    START STOP UNIT Warm reboots the target.
    READ CAPACITY(10) Reads the size of an LU.
    READ(10) Reads data.
    WRITE(10) Writes data.
    WRITE AND VERIFY(10) Writes and then verifies data.
    VERIFY(10) Verifies data.
    SYNCHRONIZE CACHE(10) Flushes cached data to disk.
    MODE SELECT(10) Configures SCSI behavior.
    RESERVE(10) Reserves (locks) an LU for exclusive access.
    RELEASE(10) Releases (unlocks) an LU reservation.
    PERSISTENT RESERVE IN An inbound reserve that persists even after system reset.
    PERSISTENT RESERVE OUT An outbound reserve that persists even after system reset.
    READ(16) Reads data.
    WRITE(16) Writes data.
    VERIFY(16) Verifies data.
    SERVICE ACTION IN(16) Performs an extended SCSI command, such as READ CAPACITY(16).
    REPORT LUNS Retrieves a list of available LUs.
  2. For a cluster node, the node is shown in the Cluster Node field and you can change nodes by clicking the change button.
  3. Click reset to set the values displayed on this page to zero.