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RAID Information
When you click the RAID Information button in the navigation pane, you are taken to the RAID Array Information page. The navigation bar across the top contains links to this section's subpages.
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RAID Array links to RAID Array Information
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RAID Array Information
Clicking RAID Information takes you to the RAID Array Information page, which displays summary information for each array that has been configured on the unit. This includes arrays that are being constructed or rebuilt. There is an information block for each array, which contains the following information:
Title Bar
The Array name, Array number, and Enclosure.
Array name
The user-defined name of the array. If no name has been assigned, this item defaults to "Array #n", where n is the Array number. The name can be changed on the Rename RAID Arrays page (see Rename RAID Arrays).
Array number
Reference number, normally given in order of creation.
Enclosure
Reference number of the unit that houses the disks that make up this array. "Enclosure 0" is the main unit; "Enclosure 1" is the expansion unit.
Configured owner
Displays the RAID Controller to which this array has been assigned. This can be changed on the RAID Array Ownership page (see RAID Array Ownership).
Current owner
Displays the RAID Controller that is currently controlling this array. This may differ from Configured owner if the assigned RAID Controller is restarting or has failed.
Array status/health
Displays the current status of the RAID array: fault tolerant, not fault tolerant, constructing, critical, rebuilding, or offline. If an array verification is currently being performed (see Verify RAID Arrays), the progress of the scan is also displayed here.
RAID level
Displays the RAID level that this array is configured for. See "RAID Levels" for more information.
Disk type
Displays the type of disk (SATA, SAS, or SSD) and its speed in revolutions per minute (RPMs).
Note
Array capacity
Displays the total data storage space of the array, in true terabytes (TB) followed by binary terabytes (TiB).
No. of members
The number of disks that make up the array.
No. of spares
The total number of spares available for the array. This includes both pool spares and dedicated spares. New spares can be added on the Add Hot Spare page (see "").
No. of volumes
The number of configured volumes in this array.
Data stripe size
The size of the individual data stripes in this array.
Cache memory
Indicates whether the cache is enabled, its mirroring status, its streaming mode, and its FUA status.
Cache size
The total size of the cache, in megabytes (MB).
Rebuild priority
Displays the configured rebuild priority, ranging from Lowest to Highest. This controls the amount of resources that a RAID Controller assigns to rebuilding the array versus handling host data requests. See Configure Rebuild Priority for more information.
Verify utility
Displays the user-configured verification tests for this array, as well as how often they are run. Verification tests are configured on the RAID Array Verify page (see Verify RAID Arrays).
Verify due
The date and time of the next scheduled verification, formatted as "Day-of-week DD-Mmm-YYYY HH:MM". If the verification is scheduled to begin within a few hours, this will display "[Verification test] will start shortly". If the verification is currently running, it will display "[Verification test] is currently active". A RAID array verification can be initiated at any time by going to the RAID Array Verify page and clicking the Execute Verify Utility NOW button (see Verify RAID Arrays).
Number of reads
Displays number of reads from the array.
Number of writes
Displays number of writes to the array.
Created
Displays the date and time that the array was created, formatted as "Day-of-Week DD-Mmm-YYYY HH:MM".
The bottom area displays the array status icon, the Array status/health, and the Array capacity. The array status icon can indicate several states:
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New arrays can be created on the Create a New RAID Array page (see Create a New RAID Array). Arrays can be deleted on the Delete a RAID Array page (see Delete a RAID Array).
RAID Array Utility Progress
Clicking RAID Information > Progress takes you to the RAID Array Utilities Progress page, which displays the progress of active RAID array utilities.
Processes that can be viewed on this page are:
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Configured Logical Volumes
Clicking RAID Information > Volumes takes you to the Configured Logical Volumes page, which displays the configured volumes for each array.
Volume Details displays the volume name, the array to which it is assigned, the number of the controller to which the array is assigned, the unit that the array is in, and the total capacity of the volume.
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The Fibre (or SAS or 10GE) columns display the host port configurations and LUN mappings.
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Clicking the Next button takes you to a detail page for that volume.
The upper area displays the same information as on the previous page. The lower area displays details for host access: the Default Access, Groups (if any), and individual hosts.
The Type column indicates the kind of host link (Fibre/SAS/10GE or iSCSI) and its status: green for connected, yellow for connected but with no LUNs assigned, and gray for disconnected or offline.
The Host column displays the host number or name, its type, and its connection.
The Access column displays the kind of access the host has to the volume: None, Read, or Read/Write. Access can be changed on the Host Access page (see Host Access).
Volumes are created on the Add Volume page (see Create a Logical Volume) and deleted on the Delete Volume page (see Delete a Logical Volume).
Volume Access Summary
If you click the Click here to view volume access summary link at the bottom of the main Configured Logical Volumes page, it takes you to a summary page that displays which hosts have access to which volumes. There are columns for Type, Host, and each configured volume in the system. There are rows for Default Access, Groups (if any), and each Host connection.
The icons in the volume columns indicate the access privileges each host has to that volume:
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Clicking the gray arrow button on the left takes you back to the main Configured Logical Volumes page.
Detailed Volume Layout
Clicking the Click here to view detailed volume layout link at the bottom of the Configured Logical Volumes page takes you to this page, which shows the free space left in each array (if any), the size of each volume, the percentage of the total array that the volume takes up, and the volume's relative position within the array.
The information sections are arranged by array. Each array's section displays a status icon, the array name, the array number, the controller number, the total capacity, and a list of any free areas in the array (see RAID Array Information for more information). If there is no free space in the array, a message is displayed in place of the list.
Below each array's information section are sections for each volume in the array. These display the following information:
The darker area below the listed items displays the name of the array that the volume belongs to, the controller number, and the Volume capacity.
The bottom area contains a bar which represents the percentage of the array's capacity that the volume uses, as well as the volume's relative position within the array.
Disk Information
Clicking RAID Information > Disk Drives takes you to the Disk Information page, which shows all of the disk drives in the system and displays information about each disk.
The Disk column displays the disk number and a disk icon. Clicking the disk icon takes you to a detail page for that disk (see Disk Information Detail Page).
The disk icon can indicate various states:
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The Status column displays the array that the disk belongs to, the controller number, and the AutoMAID status of the disk (see Chapter 9 "Power Settings").
The Details column lists the following information:
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Disk Information Detail Page
When you click a disk icon on the Disk Information page or an information icon on the Disk Statistics page (see Disk Statistics), you are taken to the detail page for that particular disk. The following information is displayed:
Status
Displays the array that the disk belongs to, the controller number, and the disk's status icon.
Capacity
Displays the raw data storage capacity of the drive, in megabytes (MB).
Type
Displays the type of disk (SAS, SATA, or SSD) and it's speed in revolutions per minute (RPMs).
Model
Displays the manufacturer's model number for the disk drive.
Serial Number
Displays the manufacturer's serial number for the drive.
Firmware
Displays the firmware that the drive is currently running.
Read IOs
Displays the number of reads executed on the drive because of array access by attached hosts.
Write IOs
Displays the number of writes executed on the drive because of array access by attached hosts.
Other IOs
Displays the number of disk input/output operations (I/Os) executed on the drive that are not because of array access, but are directly from the RAID Controller.
R/W Transfer Retries
Displays the number of times that the RAID Controller has had to retry a read or write operation on a block of data on this drive due to data transfer problems.
R/W Media Retries
Displays the number of times that the RAID Controller has had to retry a read or write operation on a block of data on this drive due to disk media problems.
Bad blocks
Displays the number of blocks on the drive that cannot be read or written to because of disk media errors.
AutoMAID Status
Displays the current AutoMAID level of the disk, if any (see Chapter 9 "Power Settings").
Qualified by
Shows who qualified the drive for use in Cisco Video Surveillance Storage System components. If the disk is unqualified, this row is not displayed.
Clicking Previous or Next takes you to other disk's detail pages.
Disk Statistics
Clicking RAID Information > Disk Stats takes you to the Disk Statistics page, which displays data on how often individual disks have been accessed and how many retries have been performed in data recovery attempts.
The Disk Number column displays the disk number, the controller to which it belongs, and an information icon. Hover the mouse over the information icon for a pop-up dialog that displays that disk's information. Click the icon to be taken to that disk's detail page (see Disk Information Detail Page).
The IOs column displays the number of input/output operations (I/Os) performed on the disk.
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The Transfer Retries column displays the number of times (for Read and Write operations, respectively) that the RAID Controller has had to retry an I/O operation due to data transfer problems.
The Media Retries column displays the number of times (for Read and Write operations, respectively) that the RAID Controller has had to retry an I/O operation due to disk media problems.
Fibre Channel Information
Clicking RAID Information > Fibre Info takes you to the Fibre Channel Information page, which provides an information summary for each Fibre Channel port on each RAID Controller in the system. The information is arranged by controller and host port. For each, the following information is displayed:
These settings can be configured or changed on the Configure Fibre page (see Configure Fibre Channel Host Access).
Host connectivity is also shown at the bottom of this page:
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Green indicates that the host is connected.
Gray indicates that the host is not connected or is offline.
Amber indicates that the host is connected, but no volumes have been mapped to it.
Red indicates that the host is on a failed RAID Controller.
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SAS Information
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If your Cisco Video Surveillance Storage System system is configured for SAS-to-Host connectivity, clicking RAID Information > SAS Info takes you to the SAS Information page, which provides an information summary for each SAS-to-Host port on each RAID Controller in the system. The information is arranged by controller and host port. For each, the following information is displayed:
These settings can be configured or changed on the Configure SAS page.
Host connectivity is also shown at the bottom of this page:
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Green indicates that the host is connected.
Gray indicates that the host is not connected or is offline.
Amber indicates that the host is connected, but no volumes have been mapped to it.
Red indicates that the host is on a failed RAID Controller.
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Host Statistics
Clicking RAID Information > Host Status takes you to the Host Statistics page, which displays I/O, block, and reset statistics for each host port. The information is arranged by controller.
The Controller column lists the host ports for each controller.
The IOs column displays the number of input/output operations (I/Os) performed through the port.
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The Blocks column displays the number of 512-byte data blocks that have been accessed by a Read or Write I/O operation through the host.
The Resets column displays the number of times that a logical unit (LUN) or a Port has been reset according to the host communication management protocol.
System Hierarchal View
Clicking RAID Information > System Nav takes you to the System Hierarchal View page, which gives an overview of the configured arrays, volumes, and array member disks in a hierarchal view. Clicking the "+" icon next to an item expands it to list its components.
Clicking an icon displays information related to the component:
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