Most likely you are using one of the HBA based devices, in a case like this please make sure what you are hearing is actually coming from the Proavio device. Most HBAs come equipped with their own alarm they will sound off as well. The Proavio devices would only alarm you if it has detected that the fan has stopped working.
S.M.A.R.T stands for Self Monitoring, Analysis, and Reporting Technolgy, in other words it tells you all the current running statistics of your physical drives. When a SMART threshold is exceeded it means that something in the drive is not running correctly and this can be one of multiple problems. The problems can range from the drive being too hot, having too many bad sectors, or just performing slower for whatever reason. Whenever a threshold is exceeded it is best to look at the SMART indicators to see what is actually causing the error.
The way the activity lights work is based on an increase of voltage on that drive. Once a drive passes this voltage threshold the activity light will start working since increase of voltage typically does not happen if they drives are not working.
To answer the question, some drives naturally have a higher voltage therefore the device will think that extra power is running through causing the light to turn on. When this happens the light is normally solid and not blinking and once activity is actually going on the lights will continue to blink like usual.
Please note that this does not effect the performance of the device or the drives it is only aesthtic.
Double check the cabling it is possible that you flipped the mini-sas cables with each other and this is most likely the cause of this problem. Although this does not effect performance in any way please note that in the case of a drive failure it is extremely important to know which drive is which; pulling out the wrong drive can cause more severe problems.
The short answer is yes, wait a minute or so after fully shutting down before powering off the device to avoid any HBA complaints.
The long answer is any time the HBA loses connection to the RAID at all the HBA will warn you of a failed RAID. This can be caused by the RAID actually going offline or just the device being turned off (which to the HBA looks like the RAID has gone offline).
Now the reason why this is happening is most likely because you are using a Mac. When a Mac computer turns off, it still has a bit of power running through its system for a few seconds, this slight bit of power keeps the RAID card running even though your monitor display is off, and the Mac has clearly shut down. When you turn off your Proavio device during this state the HBA can still detect that your RAID went offline giving you a warning. Overtime this can lead to data or RAID corruption and its best just to wait a bit before turning off the device.
For Windows it will vary from computer to computer but best practice is to wait a while.
The RAID setting on the EB400FR can be changed through the GUI that came with the CD or the front panel. However in order to change a RAID setting you must first delete the current RAID setting and the data that is currently on the device.
When this notification occurs it is one of two possible reasons. The first problem being that there is no RAID data currently on the disk. This message will always display when first booting up the device for the first time. To fix it you need to hit the button for it to re-initialize and create the RAID.
The second occurrence of this problem is when the RAID controller inside the device has died. If you have a second EB400FR you can move your disks from this one into that one to try to diagnose if that is the problem.
The EB400FR does not have any built in or software GUI instead it is controlled primarily through the LCD on the front. After a RAID has been created the front LCD can be used to see the health of the drives and enclosure.
When this notification occurs it is one of two possible problems. The first problem being that there is no RAID data currently on the disk. This message will always display when first booting up the device for the first time. To fix it you need to hit the button for it to re-initialize and create the RAID.
The second occurrence of this problem is when the RAID controller inside the device has died. If you have a second S4FR you can move your disks from this one into that one to try to diagnose if that is the problem.
The activity lights are based on the voltage of the drives and if the voltage passes a threshold it device will assume that the drive is active and switch the light color to orange. There are some drives that cause this threshold to be activated even when the drive sits at idle. This does not effect the performance of the drive in anyway and it is just a aesthetic issue.