Learn about the technologies behind the Internet with The TCP/IP Guide!|
NOTE: Using robot software to mass-download the site degrades the server and is prohibited. See here for more.
Find The PC Guide helpful? Please consider a donation to The PC Guide Tip Jar. Visa/MC/Paypal accepted.
|View over 750 of my fine art photos any time for free at DesktopScenes.com!|
[ The PC Guide | Systems and Components Reference Guide | Hard Disk Drives | Hard Disk Performance, Quality and Reliability | Redundant Arrays of Inexpensive Disks (RAID) | RAID Configuration and Implementation | RAID Management ]
Alarms and Warnings
While the software that comes with RAID controllers will let you check the status of the array at any time, there are situations where the administrator of the array needs to know that something has happened, now. Finding out about important bad news "the next time you run the management utility" just isn't good enough, and anyone who manages RAID arrays is typically too busy to keep checking for problems all day long--especially since they occur rarely anyway.
For this reason, controllers usually are programmed to generate alarms and warning messages when certain problems occur with the controller or the array. On better controllers these take the form of an audible alarm: loud beeping coming from the controller card that will certainly make you sit up and take notice, believe me. :^) Audible notification greatly increases the chances that trouble will be addressed immediately. There are cases where this feature can be the difference between a hardware problem being an inconvenience, and being a disaster.
The conditions that will trigger a warning vary from one controller to another, but the most common ones include these:
In addition to audible alerts, notification of important conditions can usually be sent over a local area network to an administrator. Controllers that support remote management will of course allow remote notification as well. In addition, modern controllers also usually support the SMART feature and will report SMART warnings generated by hard disks that include SMART.
Warning: Some RAID
controllers will let you disable the audible warning feature if you find it too
"annoying". Doing this is like pulling all the batteries out of your smoke
detectors so they won't "irritate you" while you're trying to sleep...