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blue68f100 · 02-06-2006, 10:11 PM

Since your speed picked up, I suspect the unit was doing a raid check and repair.

I think you mentioned that you got an error during the upgrade process. Snaps on restart checks the condition of the drives. If the raid had a error. It does a full check of the raid. Which means the controller has to go to the other 3 drives to check the condition of the one in error. This is called parity checking. Which also makes these units with raid 5 so good. There has been some with certain Promise controllers that have a bug, and can not support large disk (LBA48). On some units the array has to be setup with 3 drives and 1 spare. Checking the array may take 12 + hours. Some have reported as long as 3 days with larger drives.

I always like to having the units in JBOD, when doing up grades. In some cases this is the only way to get large disk to work. Alot of the older snap servers store the OS in flashram. Yours is one of those. On these models it is hard if not impossiable to backout upgrades. The new models that use a std boot bios, can backed out by image file.

02-06-2006, 10:11 PM	#13
blue68f100 Thermophile Join Date: Jul 2005 Location: Plano, TX Posts: 3,135	Re: Dell 705N Harddrive upgrade Since your speed picked up, I suspect the unit was doing a raid check and repair. I think you mentioned that you got an error during the upgrade process. Snaps on restart checks the condition of the drives. If the raid had a error. It does a full check of the raid. Which means the controller has to go to the other 3 drives to check the condition of the one in error. This is called parity checking. Which also makes these units with raid 5 so good. There has been some with certain Promise controllers that have a bug, and can not support large disk (LBA48). On some units the array has to be setup with 3 drives and 1 spare. Checking the array may take 12 + hours. Some have reported as long as 3 days with larger drives. I always like to having the units in JBOD, when doing up grades. In some cases this is the only way to get large disk to work. Alot of the older snap servers store the OS in flashram. Yours is one of those. On these models it is hard if not impossiable to backout upgrades. The new models that use a std boot bios, can backed out by image file.