Configuring RAID
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The following FortiVoice unit models can be configured to use redundant array of independent disks (RAID) with their hard disks:
If your FortiVoice unit model does not support RAID, the UI will not display the RAID menu. |
If your FortiVoice unit model supports RAID, go to System > RAID to configure a RAID for the FortiVoice unit hard disks that are used to store logs and voice data.
The default RAID level should give good results, but you can modify the configuration to suit your individual requirements for enhanced performance and reliability. For more information, see Configuring RAID.
RAID events can be logged and reported with alert email. These events include disk full and disk failure notices. For more information, see About FortiVoice logging, and Configuring alert email.
About RAID levels
The FortiVoice models supporting RAID use hardware RAID controllers that require that the log disk and voice disk use the same RAID level.
Each of the models has 2 factory-installed hard drives. The available RAID levels are 0 and 1 and the default is 1. You can replace a hard drive if required. For details, see Replacing a RAID disk.
Configuring RAID
You can modify the RAID level configuration to suit you individual requirements for enhanced performance and reliability.
To configure RAID
- Go to System > RAID > RAID System.
GUI item
Description
Model
Displays the type of the RAID controller.
Rescan
Click to rebuild the RAID unit with disks that are currently a member of it, or detect newly added hard disks, and start a diagnostic check.
Driver
Displays the version of the RAID controller’s driver software.
Firmware
Displays the version of the RAID controller’s firmware.
List of RAID units in the array
Device
Displays the name of the RAID unit. This indicates whether it is used for voice data or log message data. This is hard-coded and not configurable.
Unit
Indicates the identifier of the RAID unit, such as u0.
Level
Indicates the RAID level currently in use. You may change the level.
For more information, see About RAID levels.
Status
Indicates the status of the RAID unit.
- OK: The RAID unit is operating normally.
- Warning: The RAID controller is currently performing a background task (rebuilding, migrating, or initializing the RAID unit).
Do not remove hard disks while this status is displayed. Removing active hard disks can cause hardware damage.
- Error: The RAID unit is degraded or inoperable. Causes vary, such as when too many hard disks in the unit fail and the RAID unit no longer has the minimum number of disks required to operate in your selected RAID level. To correct such a situation, replace the failed hard disks.
- No Units: No RAID units are available.
If both Error and Warning conditions exist, the status appears as Error.
Size
Indicates the total disk space, in gigabytes (GB), available for the RAID unit.
Available space varies by your RAID level selection. Due to some space being consumed to store data required by RAID, available storage space will not equal the sum of the capacities of hard disks in the unit.
Speed
Displays the average speed in kilobytes (KB) per second of the data transfer for the resynchronization. This is affected by the disk being in use during the resynchronization.
Apply
Click to save changes.
List of hard disks in the array
ID/Port
Indicates the identifier of each hard disk visible to the RAID controller.
Part of Unit
Indicates the RAID unit to which the hard disk belongs, if any.
To be usable by the FortiVoice unit, you must add the hard disk to a RAID unit.
Status
Indicates the hardware viability of the hard disk.
- OK: The hard disk is operating normally.
- UNKNOWN: The viability of the hard disk is not known. Causes vary, such as the hard disk not being a member of a RAID unit. In such a case, the RAID controller does not monitor its current status.
Size
Indicates the capacity of the hard disk, in gigabytes (GB).
Delete
Click to unmount a hard disk before swapping it.
After replacing the disk, add it to a RAID unit, then click Rescan.
To change RAID levels
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Back up data on the disk before beginning this procedure. Changing the device’s RAID level temporarily suspends all mail processing and erases all data on the hard disk. For more information on creating a backup, see Backing up the configuration. |
- Go to System > RAID > RAID System.
- From Level, select a RAID level.
- Click Apply.
The FortiVoice unit changes the RAID level and reboots.
Replacing a RAID disk
When replacing a disk in the RAID array, the new disk must have the same or greater storage capacity than the existing disks in the array. If the new disk has a larger capacity than the other disks in the array, only the amount equal to the smallest hard disk will be used. For example, if the RAID has 400 GB disks, and you replace one with a 500 GB disk, to be consistent with the other disks, only 400 GB of the new disk will be used.
FortiVoice units support hot swap; shutting down the FortiVoice unit during hard disk replacement is not required.
To replace a disk in the array
- Go to System > RAID > RAID System.
- In the row corresponding to the hard disk that you want to replace (for example, p4), select the hard disk and click Delete.
The RAID controller removes the hard disk from the list.
- Protect the FortiVoice unit from static electricity by using measures such as applying an antistatic wrist strap.
- Physically remove the hard disk that corresponds to the one you removed in the FortiVoice GUI from its drive bay on the FortiVoice unit.
- Replace the hard disk with a new hard disk, inserting it into its drive bay on the FortiVoice unit.
- Click Rescan.
The RAID controller will scan for available hard disks and should locate the new hard disk. Depending on the RAID level, the FortiVoice unit may either automatically add the new hard disk to the RAID unit or allocate it as a spare that will be automatically added to the array if one of the hard disks in the array fails.
The FortiVoice unit rebuilds the RAID array with the new hard disk. Time required varies by the size of the array.