Sorry for the late answer, but some harddrives went crashed the same time and I had to buy a new Array... Am 2007-08-29 14:45:02, schrieb Michael Loftis: > --On August 29, 2007 1:03:53 PM -0700 Mike Bird <mgb-debian@yosemite.net> > wrote: > >Although 3Ware website and 9xxx product data sheets still claim > >support for JBOD, once you read the huge user manual you find that > >JBOD support was discontinued in a firmware "upgrade". Single disk Never uses "Just-A-Bunch-Of-Drives"... > >mode is available but your data is still hidden behind the 3Ware > >layer and unavailable without paying the 3Ware ransom. Which means ??? > >you have to go out and buy another overpriced 3Ware and keep it in a > >cupboard so you can recover your data when the first controller dies. In general I buy a new one if one is broken... Never used ¶Ware controller on Singel-Disks, except my Special-Server in my 4WD, which use two 12-Channel controllers and on each port a 4 GByte CF-Drive > >Google will also show you many instances over the years of people > >finding their 3Ware running at a tiny faction of advertised speed. Never had speed problems with 3Ware and since I have only GBit-LAN, 3Ware controllers fullfill my requirements... My courier-imap is definitivly NOT the bottleneg because I get only 78 MByte/Sec > >Never again 3Ware! Chaqun son truck! > >Buy an inexpensive OEM controller and use software RAID. Much more > >reliable and often faster. Wuahhhhh....! > MDRAID certainly isn't reliable in a huge number of failure cases. It > causes the machine to OOPS/lock up. Or even lose data. MDRAID is also ACK > very difficult to administer, offering only (depending on your version) > mdadm or raid* tools. mdadm is rather arcane. simple operations are not > well documented, like, how do i replace a failed drive? or start a > rebuild? there's no 'rebuild drive' it's completely NON automated either. And how to do HotSwap? -- Never figured it out how it works! > meaning it always takes user intervention to recover from any failure. a > single I/O error causes MDRAID to mark the element as failed. it does not > even bother to retry. MDRAID is also incapable of performing background > patrolling reads, something i think even 3Ware does. MDRAID RAID5 sets are > non-bootable. Something you get from any hardware raid, evne 3Ware. My > money lately has been on LSI's cards. 3Ware is a good second choice too. > the newer ICP* modelled ICP controllers are shit (as opposed to the pre > intel/adaptec GDT* series which are rock solid). Appropos GDT... I have replaced a broken 3Ware with a NEW (!!!) GDT6128RD (bought in 04/2000) and Raidyne Firmware but I can not boot from my connected CD-532S or CDR-55S to install Etch... Do you know, whats going on here? Note: Also I can configure only Raid-0 or Raid-1 (including Hotfix) if I have 5 Drives, but it does not let me select Raid-4 or Raid-5, where I prefer Raid-5+Hotfix > I can never recommend any software RAID for anything other than simple > mirrors, and then, always, with the caveat that it will be a bitch to fix > if things go wrong, you probably won't lose data, but getting a software > raid running again is often arcane, especially with MDRAID and it's > frequent inability to correctly identify a failed drive (sometimes the > fault of the SATA controller mind you). BSDs vinum is little better in > these regards. And god forbid you lose your boot drive and have forgotten > to keep all the boot blocks on your spare properly updated. you also have > to manually intervene and reorder drives in that case, something hardware > raid, any hardware raid, will transparently cover. Question 1: If you have an 3Ware 3W950x with 8 channels and because financel problems you have only installed two Raid-1 (one on 0 and 1 and the second on 4 and 5) without Hotfix and want to add the Hotfix-drive no (later), how to do this? Question 2: The same shit as Question 1, but for the GDT6128RD... :-/ Thanks, Greetings and nice Day Michelle Konzack Systemadministrator Tamay Dogan Network Debian GNU/Linux Consultant -- Linux-User #280138 with the Linux Counter, http://counter.li.org/ ##################### Debian GNU/Linux Consultant ##################### Michelle Konzack Apt. 917 ICQ #328449886 50, rue de Soultz MSN LinuxMichi 0033/6/61925193 67100 Strasbourg/France IRC #Debian (irc.icq.com)
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