A list of logical drives associated with the controller displays in the left panel tree view. Each logical drive in the list displays the condition, logical drive number and the fault tolerance of that logical drive. Select one of the logical drive entries to display the following information.
Status displays the status of the logical drive. Many of the enumeration's values are self-explanatory. However, a few are not and are described here in more detail. Stressed indicates that the element is functioning, but needs attention. Examples of "Stressed" states are overload, overheated, and so on. Predictive Failure indicates that an element is functioning nominally but predicting a failure in the near future. In Service describes an element being configured, maintained, cleaned, or otherwise administered. No Contact indicates that the monitoring system has knowledge of this element, but has never been able to establish communications with it. Lost Communication indicates that the Managed System Element is known to exist and has been contacted successfully in the past, but is currently unreachable. Stopped and Aborted are similar, although the former implies a clean and orderly stop, while the latter implies an abrupt stop where the state and configuration of the element might need to be updated. Dormant indicates that the element is inactive or quiescent. Supporting Entity in Error indicates that this element might be "OK" but that another element, on which it is dependent, is in error. An example is a network service or endpoint that cannot function due to lower-layer networking problems. Completed indicates that the element has completed its operation. This value should be combined with either OK, Error, or Degraded so that a client can tell if the complete operation Completed with OK (passed), Completed with Error (failed), or Completed with Degraded (the operation finished, but it did not complete with OK or did not report an error). Power Mode indicates that the element has additional power model information contained in the Associated PowerManagementService association. Added Not In Use indicates that the memory module has been added, but is not yet in use. Upgraded Not In Use indicates that the memory module has been upgraded, but the memory is not yet in use. Does Not Match indicates that the memory module does not match the other memory modules within the bank. Not Supported indicates that memory module is not supported. Bad Configuration indicates that memory module violates the add/upgrade configuration rules.
Fault Tolerance displays the fault tolerance mode of the logical drive. To change the fault tolerance mode, run the Array Configuration Utility. The following values are valid for the Logical Drive Fault Tolerance:
None (RAID 0) fault tolerance is not enabled. If a physical drive reports an error, the data cannot be recovered by the Drive Array Mirroring (RAID 1/RAID 0+1) is the highest level of fault tolerance. It is the only method offering fault tolerance protection if no more than two physical drives are selected. Drive mirroring creates fault tolerance by storing duplicate data on two drives. There must be an even number of drives. This is the most costly fault tolerance method because it requires 50 percent of the drive capacity to store the redundant data. Data Guarding (RAID 4) assures data reliability while using only a small percent of the logical drive storage capacity. A designated, single physical drive contains parity data. If a drive fails, the controller uses the data on the parity drive and the data on the remaining drives to reconstruct data from the failed drive. This allows the system to continue operating with slightly reduced performance until you replace the drive. Distributed Data Guarding (RAID 5) stores parity data across all the physical drives in the array and allows more simultaneous read operations and higher performance than data guarding (RAID 4). If a drive fails, the controller uses the parity data and the data on the remaining drives to reconstruct data from the failed drive. The system then continues operating with a slightly reduced performance until you replace the failed drive. Advanced Data Guarding (RAID ADG) is the fault tolerance method that provides the highest level of data protection. It stripes data and parity across all the physical drives in the configuration to ensure the uninterrupted availability of uncorrupted data. This fault-tolerance method is similar to RAID 5 in that parity data is distributed across all drives in the array, except in RAID ADG the capacity of multiple drives is used to store parity data. Assuming the capacity of 2 drives is used for parity data, this allows continued operation despite simultaneous failure of any 2 drives in the array, whereas RAID 4 and RAID 5 can only sustain failure of a single drive. Unknown- You may need to upgrade your software.
Data Redundancy displays the number of complete copies of data currently maintained. Examples would be RAID 5 where 1 copy is maintained and RAID 1 where 2 or more copies are maintained. Possible values are 1 to n. Data Redundancy Goal describes the desired number of complete copies of data to be maintained. Maximum Data Redundancy describes the maximum number of complete copies of data to be maintained. Minimum Data Redundancy describes the minimum number of complete copies of data to be maintained. Package Redundancy displays how many physical packages can currently fail without data loss. For example, in the storage domain, package redundancy describes how many disk spindles can fail without data loss including, at most, one spare. An example would be RAID5 with a spare disk which would have a PackageRedundancy of 2. Package Redundancy Goal describes the desired number of redundant packages to be used. Maximum Package Redundancy describes the maximum number of redundant packages to be used. Minimum Package Redundancy describes the minimum number of redundant packages to be used. Capacity displays the size of the logical drive in megabytes. For example, 120 indicate that the logical drive is 120 megabytes. Use this data to determine whether the drive will be large enough to accommodate your needs. The capacity utility defines a megabyte as 1,048,576 bytes. The capacity value shown may differ from the stated size of the drive due to different definitions of a megabyte. Many hardware manufacturers use the value of 1,000,000 for megabyte instead of 1,048,576. Accelerator indicates whether the logical drive has an Array Accelerator board configured and enabled. The following values are valid:
Enabled- The Array Accelerator board is configured and enabled for this logical drive. Disabled- The Array Accelerator board is configured but not enabled for this logical drive. Unknown- There is no Array Accelerator board configured for this logical drive.
Stripe Size displays the size of a logical drive stripe in kilobytes. Percent Rebuild Complete- If this property is not NULL then this is the percent complete value for the rebuild in progress on this volume. OS Name displays the operating system name associated with this logical drive. Multipath Status indicates the overall multipath status of this logical drive. The following values are valid:
not supported- Multipath access not supported by Array Firmware. not configured- Multipath access is supported by Array Firmware but not configured. configured redundant- Volume is configured with redundant physical paths on all physical drives that make up the volume. configured non-redundant- Volume is configured with redundant paths but is currently not redundant possibly due to failure of 1 or more paths or a configuration error.
Identify Drive
Select the length of time to identify the physical drives that make up the logical drive from the drop-down list box and then select the Start button. The page will automatically refresh and display an image of an identified drive and a Stop button. Select the Stop button to end identification before the time expires
After the drive identification completes, the page will have to be manually refreshed to display the Start button. There may be a delay, depending on the length of the HP Insight Management provider data collection interval, after the drive identifcation completes and before the Start button can be displayed.
Only drives in hot plug trays are supported since the LEDs are part of the tray. Spare drives that are included in the logical drive will also be identified. Only one logical drive on a selected controller may be identified at a time. If a different drive is selected while another drive is currently identified then the other drive will stop identification and the selected drive will be identified.
Physical Drive List
Select one of the listed physical drives to see more information about the drive.
Spare Drive List
Select one of the listed spare drives to see more information about the drive.
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