On 07/23 01:56 , Les Mikesell wrote: > > - When one drive dies, the whole machine kernel panicking and locking up. > > The data was still good on the second drive; but it required a site visit > > to get things working again; and then another site visit to replace the > > drive. > > That has to do with putting two IDE drives on the same controller.
A valid point. It was probably impossible to do otherwise because of cabling reasons at the time. > Same here. I like to keep at least the boot and root partitions on scsi. You have more money to work with than we do. :) I recognize the value of using SCSI drives in some situations; but I don't believe the extra cost is worth it when compared to a 3ware IDE RAID array. (Which often performs better). It's also a lot easier to find a replacement IDE drive down at the local superstore. > IDE drives can fail in ways that keep the machine from booting at all - > even from a drive on the other controller. But I'd expect people > involved with doing backups and recovery to know how to open a case, Most of our installations are 'lights out' effectively. The people onsite know enough to call our phone number when the Internet doesn't work, but that's about it. > mdadm is pretty good about knowing which partitions are already in use. > In the case where you are adding the replacement mirror I don't think it > will let you do it wrong. Memory is hazy; but I know I've blown away partitions' data at least once in the course of setting up an md array. Fortunately there wasn't anything on it yet. :) (Mind you, it's pretty easy to blow away data with *any* RAID management utility, and I recognize that). > Just be sure to include the cost of a spare offsite controller to be > sure you will be able to access the disks if that's all you have left > after a disaster, and the time to learn the details of the > vendor-specific utilities. - Yes, we keep spare controllers on hand. - The 3ware management utilities aren't as flexible as the md management utilities, but they are much simpler and easier to use. I certainly won't disparage your choice of software; if it works for you, more power to you. One-size-fits-all solutions serve no one well. -- Carl Soderstrom Systems Administrator Real-Time Enterprises www.real-time.com ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ BackupPC-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
