The Dell PowerVault MD3620f Series arrays can support up to 64
hosts when connected to one or more 4Gb/s or 8Gb/s Fibre Channel switches.
Storage capacity, with a base of 120 hard disk drives, can be expanded by
attaching additional PowerVault MD1200 and/or MD1220 expansion enclosures. For
additional scalability, there is a
Premium Feature Key allowing up to 192 hard drives.
With the multi-generational and
multi-protocol MD Storage Manager, all administrative tasks, including
configuration, reconfiguration,
expansion, maintenance and performance tuning, can be performed with no system
downtime and no interruption to array performance. MD Storage Managers
configuration flexibility includes the ability to mix RAID levels, segment
sizes, array sizes, and cache policies all within a single storage array. The
Enterprise Window provides a consolidated monitoring view of multiple arrays,
including the MD3620f series.
The user can use the Performance
Monitor to select virtual disks and RAID controller modules to monitor or to
change the polling interval.
Guidelines for
using the Performance Monitor:
Using the Performance Monitor to
retrieve performance data can affect the normal storage array performance
depending on the polling interval that the user sets.
The Performance Monitor does not
dynamically update its display if any configuration changes occur while the
window is open. The user must close the
Performance Monitor window and reopen it for the changes to be displayed.
If the storage array the user is
monitoring begins in or transitions to an unresponsive state, an informational
dialog is displayed. The dialog informs that
the Performance Monitor cannot poll the storage array for performance data.
Monitoring the performance of the array:
Open MDSM and select the appropriate storage
array.
Open the Array Management Window (AMW) for the
selected storage array.
In the AMW, select Storage Array® Monitor Performance
Click Settings:
Select the components that the user wants to monitor.
The user can monitor: • RAID
controller modules • Virtual disks • Storage array totals
In Polling interval, select how often the user want to update the performance
statistics.
For an accurate elapsed time, do
not use the Set RAID Controller Module Clocks option while using the
Performance Monitor.
Each time the polling interval elapses, the
Performance Monitor queries the storage array again and updates the statistics
in the table.
Click Start.
Values are displayed for the
selected storage arrays in the Performance Monitor data table. The table is
updated at the interval specified in the Polling Interval setting.
Click Update to force an immediate poll of the
storage array.
Click Stop to stop monitoring the storage
array.
Click Save As on the Performance Monitor main
dialog to save the currently displayed performance statistics.
Select an appropriate directory.
Type a file name in the File name text box.
Select a file type from the Files of type
list.
• Use the Report format (ASCII text) file type to save the data to a
report form for viewing or printing.
• Use the Comma Delimited Format file type to save the data in a form
that can be imported into a commercial spreadsheet application for further
analysis. Most leading commercial spreadsheet applications recognize a comma
delimiter. These applications use the delimiter to import the data into
spreadsheet cells.
Click Save. The Performance Monitor data
provides information about how the storage array is performing. The data is
presented in eight columns.Use this data to make performance tuning decisions
for the storage array
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