I'm still confused as to a resolution to my issue. I'm trying to set up raid 0+1- mirrored stripes as opposed to raid 1+0 or 10-striped mirrors. Both require at least 4 drives.
The ACU from HP only allows you to create raid 0+1. I have 6 drives. I set aside 4 for raid 0+1 and configure that. when i reboot, in the bios of the controller it says i'm running raid 1. Also, with the remaining 2 drives, the ACU lets me create a raid 0+1(or so it says) and it shows up as such in the ACU. Whne i reboot, again in the bios i have raid 1. There is a descrepancy between the bios and the ACU. ehich is correct? Also, why would the ACU allow me to create a raid 0+1 array with 2 drives and list it as such? HP recommends that you use the ACU for raid creation(and it has more options than the bios utility anyway), but its clearly not accurate. Does anyone who has HP Proliant experience have any advice for me? I'm at a loss here. Thanks -----Original Message----- From: Rick Kingslan [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 20, 2005 10:46 PM To: [email protected] Subject: RE: [ActiveDir] WAY OT: Conflicting RAID terminiology (used to be Smart array(OT) Sorry, Tom... THAT should have had a :o) in it too. Rick -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Kingslan Sent: Wednesday, July 20, 2005 7:24 PM To: [email protected] Subject: RE: [ActiveDir] WAY OT: Conflicting RAID terminiology (used to be Smart array(OT) Well - interesting as we still haven't settled on which you're talking about when you say RAID 10, RAID 0+1, RAID 1+0. I suspect you're going to need 4. That, like 42, is an answer. Rick -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kern, Tom Sent: Wednesday, July 20, 2005 6:34 PM To: [email protected] Subject: RE: [ActiveDir] WAY OT: Conflicting RAID terminiology (used to be Smart array(OT) so is anyone gonna answer my question? do i need at least 4 drives to support raid 0 +1? or can it be done with 2? Does Smart Array 6i support raid 10(1 +0)? Thanks btw, i'm nobody but i always was told there is a difference between raid 10 and 0+1.... -----Original Message----- From: Rick Kingslan [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 20, 2005 7:12 PM To: [email protected] Subject: RE: [ActiveDir] WAY OT: Conflicting RAID terminiology (used to be Smart array(OT) In looking at some further docs, there are a few things that are certain: 1. Standards aren't - when it comes to Hybrid RAID. 2. The only to know if your controller has what *I* consider RAID 10 (RAID 1+0) - 'Read the Frakking Docs'! One vendor's RAID 0+1 is another vendor's RAID 1+0 3. Hybrid RAID is good - but expensive. Know what you want, why you want it, and be ready to justify the cost. 4. Apologies to Jose - it's a terminology thing. I wonder how many people order servers with RAID 1+0, get 0+1, and have a meltdown with the vendor who says, "But, Sir - that's what you asked for, and what you explain is what we sent!" Rick -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Medeiros, Jose Sent: Wednesday, July 20, 2005 5:33 PM To: [email protected] Subject: RE: [ActiveDir] Smart array(OT) Hi Rick, It's okay to disagree and if you do a lookup on RAID with Google it comes up with several sites with conflicting info ( Which means do not believe every thing your read unless you trust the source ). The authority on RAID is the hardware vendors, and each has there own interpretation or variance, however the true authority is IBM who invented it in the first place. Now companies like Network Appliance ( NETAPP ) have enhanced versions of a RAID 4 controller with patented write any where technology that makes them extremely fast and much faster then a vendor that uses RAID 4. So with that said I am including a link to Adaptec's site which explains their implementation of Raid 0+1 ( Raid 10 ). http://www.adaptec.com/worldwide/product/markeditorial.html?sess=no&language =English+US&cat=%2fTechnology%2fRAID+Controllers&prodkey=talk_about_raid Well that's my two cents, Jose Medeiros An old timer that worked at IBM supporting the engineers that invented the stuff. MCP+I, MCSE, NT4 MCT www.ntea.net www.tvnug.org www.sfntug.org ---------------------------------------------------------------- -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Rick Kingslan Sent: Wednesday, July 20, 2005 3:11 PM To: [email protected] Subject: RE: [ActiveDir] Smart array(OT) Jose, I respectfully disagree. RAID 0+1 is a mirrored array with segments that are RAID 0 arrays. RAID 0+1 has the same level of fault tolerance as RAID 5. If a single drive fails, the array becomes effectively a RAID 0 array. RAID 10, on the other hand, is an available standard on many Enterprise controllers. It is implemented as a striped array who's segments are always RAID 1 arrays. RAID 10 has the same fault tolerance as RAID 1, and carries the same overhead as mirroring alone. It has a huge I/O gain in that all segments are RAID 1 stripes. Rick -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Medeiros, Jose Sent: Wednesday, July 20, 2005 4:30 PM To: [email protected] Subject: RE: [ActiveDir] Smart array(OT) Hi Tom, Raid 0+1 is raid 10. If I recall, Adaptec and Dell coined the the Raid 10 term back in 1999. I always use the bios utility to create my drive raid arrays, what does that say? Jose -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Kern, Tom Sent: Wednesday, July 20, 2005 11:42 AM To: ActiveDir (E-mail) Subject: [ActiveDir] Smart array(OT) I'm using Smart Array 6i to create a raid 0 +1 array with 4 drives. I'm using the web array config utlilty from hp to do this. It offers to create a raid 0+1 array but when i do, it turns out to be just raid 1(thats what it says in the bios bot up screen) also, i have another array with 2 drives which the utility offers to make raid 0+1 which is impossible with 2 drives. but if you say "ok", it happily goes on to do this(of course, it only turns out to be raid 1 as well) has anyone else had this issue or am i doing something wrong? Also, it never seems to have an option for raid 10. does smart array support this? thanks List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/
