On Fri, Sep 14, 2012 at 2:51 PM, Stan Hoeppner <s...@hardwarefreak.com> wrote: > On 9/14/2012 11:29 AM, Kelly Clowers wrote: >> On Thu, Sep 13, 2012 at 4:45 PM, Stan Hoeppner <s...@hardwarefreak.com> >> wrote: >>> On 9/13/2012 5:20 AM, Veljko wrote: >>>> On Tue, Sep 11, 2012 at 08:34:51AM -0500, Stan Hoeppner wrote: >>>>> One of the big reasons (other than cost) that I mentioned this card is >>>>> that Adaptec tends to be more forgiving with non RAID specific >>>>> (ERC/TLER) drives, and lists your Seagate 3TB drives as compatible. LSI >>>>> and other controllers will not work with these drives due to lack of >>>>> RAID specific ERC/TLER. >>>> >>>> Those are really valuable informations. I wasn't aware that not all >>>> drives works with RAID cards. >>> >>> Consumer hard drives will not work with most RAID cards. As a general >>> rule, RAID cards require enterprise SATA drives or SAS drives. >> >> They don't work with real hardware RAID? How weird! Why is that? > > Surely you're pulling my leg Kelly, and already know the answer. > > If not, the answer is the ERC/TLER timeout period. Nearly all hardware > RAID controllers expect a drive to respond to a command within 10 > seconds or less. If the drive must perform error recovery on a sector > or group of sectors it must do so within this time limit. If the drive > takes longer than this period the controller will flag it as bad and > kick it out of the array. The assumption here is that a drive taking > that long to respond has a problem and should be replaced. > > Most consumer drives have no such timeout limit. They will churn > forever attempting to recover an unreadable sector. Thus routine errors > on consumer drives often get them kicked instantly when used on read > RAID controllers.
Why would I be pulling your leg? I have never had opportunity to work with real raid cards. Nor have I ever heard anyone say that before. The highest end I have used was I believe a Highpoint card, about ~$150 range, which was fakeRAID (and I believe the drives attached to that were enterprise drives anyway) Thanks for the info. Kelly Clowers -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAFoWM=9wo+94mpy0j4_wkfdtwczr9eq4oazk9ptwzhpyq10...@mail.gmail.com
