Mark Schoonover wrote:
Software RAID works fine, as long as there's no problems.
ROTFL -- that's geek comedy at its finest...
We found that the 'data protection' features of software raid1/raid5 worked, but typically when a drive failed, the linux kernel was unable to provide useful service until it was rebooted and/or the failed drive removed. This was in the 2.4 days; things may be different now.
We have since moved to 3ware hardware raid with better success in terms of continuing to provide service through a drive failure event.
Dave Thompson UW-Madison
On Tue, 2006-05-30 at 07:55 -0500, David Thompson wrote:
Mark Schoonover wrote:
Software RAID works fine, as long as there's no problems.
ROTFL -- that's geek comedy at its finest...
We found that the 'data protection' features of software raid1/raid5 worked, but typically when a drive failed, the linux kernel was unable to provide useful service until it was rebooted and/or the failed drive removed. This was in the 2.4 days; things may be different now.
We have since moved to 3ware hardware raid with better success in terms of continuing to provide service through a drive failure event.
I don't think anyone is suggesting that software RAID via the kernel is better than Hardware RAID via 3ware. At least I would not suggest that :)
Hardware RAID is better (IMHO), but also more expensive.
Software RAID is better than no RAID, but not better than 3ware hardware RAID.
Software RAID many times will work OK through hard drive failure. It has for me MOST of the time. SATA does sometimes have an issue with hotswap drives and software raid ... as do some SCSI drivers as well with software RAID.
So, if you have the money to spend, buy a good 3ware card. If you don't have the money, consider the data and how much it would cost if you lost it and buy a 3ware card anyway :)
If you really don't have the money to buy a 3ware card .. use software RAID as something that is safer than no RAID at all.
That is, as always, my opinion.
We have since moved to 3ware hardware raid with better success in terms of continuing to provide service through a drive failure event.
Does anyone have any experience with Adaptec RAID controllers? I have an application that will need hot swapping and am considering the Adaptec 1420SA controller but I can use the 3ware if it is indeed better.
Brett
Brett Serkez spake the following on 5/30/2006 6:24 AM:
We have since moved to 3ware hardware raid with better success in
terms of
continuing to provide service through a drive failure event.
Does anyone have any experience with Adaptec RAID controllers? I have an application that will need hot swapping and am considering the Adaptec 1420SA controller but I can use the 3ware if it is indeed better.
Brett
I have 2 systems with the 2820SA cards, and I have had a 2 drive failure on each system. While I can't really find evidence to blame this on the card, I am re-thinking their use in the future. Looking at the current pricing, there is not that much difference in the cards, maybe 10 to 20 percent.
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Brett Serkez -
David Thompson -
Johnny Hughes -
Scott Silva