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SATA Raid 1 Data Corruption - A7N8X / RocketRaid 1520
Hi There
I have 2 x 250 SATA 150 Seagate drives. Attached them to the MOBO SATA connections and the Promise BIOS never saw them. Spend 4 weeks with tech support and eventually gave up and bought a Highpoint Rocketraid 1520. Connected everything up and the drives were found. Initialised & formatted the HDD with Windows XP SP disktools, set up a RAID 1 array and then copied over my data. Only to find it was mostly corrupted. Tried reinstalling and reformatting, but had the same corruption problems. So uninstalled, and started again, but this time set up a RAID 0 array, and all data copied over was fine. So uninstalled and retried with RAID 1 only to find the same corruption problem. Can any one provide a solution to this data corruption problem? Tech support so far has been somewhat poor TIA Ice70 |
#2
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SATA Raid 1 Data Corruption - A7N8X / RocketRaid 1520
a week ago i had same confusion as you. and i gave up, too.
but yesterday i've saw some tech. through tom's and now i think raid must at least with 3 hdd then raid work !! good luck & merry christmas |
#3
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SATA Raid 1 Data Corruption - A7N8X / RocketRaid 1520
wrote in message ups.com... a week ago i had same confusion as you. and i gave up, too. but yesterday i've saw some tech. through tom's and now i think raid must at least with 3 hdd then raid work !! good luck & merry christmas No. There are a lot of different forms of 'RAID'. RAID3, and RAID5, require three drives or more (which is what the 'reference' you are seeing is about). RAID0, should never have been called RAID at all (it does not give any 'redundancy', and given that the 'R' in 'RAID', stands for 'redundant', it is naughty, that it is included as a form of 'RAID' - however this has happened, since used in combination with RAID1, as 'RAID1+0', or 'RAID10', it is one of the simplest/fastest forms of RAID). However 'RAID1', gives redundancy, and works perfectly with many controllers. It is more commonly called 'mirroring', and is 'borderline' on whether it should be included with the normal RAID forms (which normally have parity calculations involved), but it most certainly _should_ work. The 'higher' RAID forms, all need three or more drives, but RAID1, is perfectly legitimate. So, RAID1, is perfectly possible, and can work. The downside of it is that you lose 50% of your storage capacity. Now the original poster has the very strange situation, that the form that should provide redundancy (RAID1), is giving data corruption, while the form that doesn't (RAID0), doesn't. I'd have to say that this sounds like a controller problem, or some borderline I/O problem with the drives, which is showing up in the RAID1 configuration. Now there have been a lot of data I/O problems with SATA150, and some manufacturers ship their SATA150 drives, set to wake up using SATA133 for this reason (Hitachi do this, and offer a software tool to switch the interface speed up, if you are confident that your hardware really will work - given that the only speed gain from 133 to 150, is basically immeasurable, except by benchmark programs, since the basic speeds of the drives themselves is still below 100MB/sec, this is a much safer way to go...). I'd suggest seeing if Seagate have a software tool to turn the interface speed down to SATA133, and seeing if both problems disappear (the inability for the motherboard controller to recognise the drives, could well come from the same source)... Best Wishes |
#4
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SATA Raid 1 Data Corruption - A7N8X / RocketRaid 1520
Hi Roger
thank you for the reply. Contacted Seagate who replied: "The controller is what determines the speed (SATA 133) of the drive. Try exchanging your cables also." These are the second set of cables I have tried. I would guess that if they work for RAID 0 they should really work for RAID 1? I have noticed that the rocketRAID card and my nvidia 6800 GT share the same IRQ (16) I don't really have any idea what that means, or if its meaningful. Or even what to do if it is... thank you Ice70 On Wed, 14 Dec 2005 09:40:59 GMT, "Roger Hamlett" wrote: wrote in message oups.com... a week ago i had same confusion as you. and i gave up, too. but yesterday i've saw some tech. through tom's and now i think raid must at least with 3 hdd then raid work !! good luck & merry christmas No. There are a lot of different forms of 'RAID'. RAID3, and RAID5, require three drives or more (which is what the 'reference' you are seeing is about). RAID0, should never have been called RAID at all (it does not give any 'redundancy', and given that the 'R' in 'RAID', stands for 'redundant', it is naughty, that it is included as a form of 'RAID' - however this has happened, since used in combination with RAID1, as 'RAID1+0', or 'RAID10', it is one of the simplest/fastest forms of RAID). However 'RAID1', gives redundancy, and works perfectly with many controllers. It is more commonly called 'mirroring', and is 'borderline' on whether it should be included with the normal RAID forms (which normally have parity calculations involved), but it most certainly _should_ work. The 'higher' RAID forms, all need three or more drives, but RAID1, is perfectly legitimate. So, RAID1, is perfectly possible, and can work. The downside of it is that you lose 50% of your storage capacity. Now the original poster has the very strange situation, that the form that should provide redundancy (RAID1), is giving data corruption, while the form that doesn't (RAID0), doesn't. I'd have to say that this sounds like a controller problem, or some borderline I/O problem with the drives, which is showing up in the RAID1 configuration. Now there have been a lot of data I/O problems with SATA150, and some manufacturers ship their SATA150 drives, set to wake up using SATA133 for this reason (Hitachi do this, and offer a software tool to switch the interface speed up, if you are confident that your hardware really will work - given that the only speed gain from 133 to 150, is basically immeasurable, except by benchmark programs, since the basic speeds of the drives themselves is still below 100MB/sec, this is a much safer way to go...). I'd suggest seeing if Seagate have a software tool to turn the interface speed down to SATA133, and seeing if both problems disappear (the inability for the motherboard controller to recognise the drives, could well come from the same source)... Best Wishes |
#5
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SATA Raid 1 Data Corruption - A7N8X / RocketRaid 1520
"ice" wrote in message news Hi Roger thank you for the reply. Contacted Seagate who replied: "The controller is what determines the speed (SATA 133) of the drive. Try exchanging your cables also." I thought you said the drives were signalling at SATA150 rate?. The utility _is_ available from Seagate (but you have to get them to understand that you want to turn the rate _down_ from the maximum supported by the controller and drive). It changes one of the mode page settings in the drive, so the controller cannot use the faster rates. These are the second set of cables I have tried. I would guess that if they work for RAID 0 they should really work for RAID 1? The problem is that if this is a really 'borderline' error, anything is possible,and the slight timing differences between the two modes might make a difference, but generally if the cable is reliable in one mode it ought to be OK in the other. I have noticed that the rocketRAID card and my nvidia 6800 GT share the same IRQ (16) I don't really have any idea what that means, or if its meaningful. Or even what to do if it is... thank you Ice70 It means I'd suggest moving the card to a different slot. While devices should be able to share IRQ's, the AGP display cards, are commonly one of the devices that has the most problems with this (remember at times there will be a lot of interrupts from an AGP card). If it is showing '16', then it suggests that one of the advanced interrupt controllers is present that supports interrupts above 15, and should avoid this happening. Normally the AGP shares with the top PCI slot, so a different sot may help. Best Wishes On Wed, 14 Dec 2005 09:40:59 GMT, "Roger Hamlett" wrote: wrote in message roups.com... a week ago i had same confusion as you. and i gave up, too. but yesterday i've saw some tech. through tom's and now i think raid must at least with 3 hdd then raid work !! good luck & merry christmas No. There are a lot of different forms of 'RAID'. RAID3, and RAID5, require three drives or more (which is what the 'reference' you are seeing is about). RAID0, should never have been called RAID at all (it does not give any 'redundancy', and given that the 'R' in 'RAID', stands for 'redundant', it is naughty, that it is included as a form of 'RAID' - however this has happened, since used in combination with RAID1, as 'RAID1+0', or 'RAID10', it is one of the simplest/fastest forms of RAID). However 'RAID1', gives redundancy, and works perfectly with many controllers. It is more commonly called 'mirroring', and is 'borderline' on whether it should be included with the normal RAID forms (which normally have parity calculations involved), but it most certainly _should_ work. The 'higher' RAID forms, all need three or more drives, but RAID1, is perfectly legitimate. So, RAID1, is perfectly possible, and can work. The downside of it is that you lose 50% of your storage capacity. Now the original poster has the very strange situation, that the form that should provide redundancy (RAID1), is giving data corruption, while the form that doesn't (RAID0), doesn't. I'd have to say that this sounds like a controller problem, or some borderline I/O problem with the drives, which is showing up in the RAID1 configuration. Now there have been a lot of data I/O problems with SATA150, and some manufacturers ship their SATA150 drives, set to wake up using SATA133 for this reason (Hitachi do this, and offer a software tool to switch the interface speed up, if you are confident that your hardware really will work - given that the only speed gain from 133 to 150, is basically immeasurable, except by benchmark programs, since the basic speeds of the drives themselves is still below 100MB/sec, this is a much safer way to go...). I'd suggest seeing if Seagate have a software tool to turn the interface speed down to SATA133, and seeing if both problems disappear (the inability for the motherboard controller to recognise the drives, could well come from the same source)... Best Wishes |
#6
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SATA Raid 1 Data Corruption - A7N8X / RocketRaid 1520
ice;
A couple of years ago I had the same problem -- data corruption in Raid1 with a RocketRaid card. In my case only files 1 MB were corrupted. There were no error messages. I no longer use Highpoint cards. I've become a fan of 3ware RAID cards. They are easy to install, have good documentation, are easy to monitor, give high throughput (the card reduces the CPU load), and are Linux-friendly. 3ware RAID products are a bit more expensive than their competition, and are worth it. You might look at 3ware's 8006-2LP, that will let you mirror your two SATA drives. It is about $120. http://www.provantage.com/buy-73WAR0...t-shopping.htm Good luck. TomC "ice" wrote in message ... Hi There I have 2 x 250 SATA 150 Seagate drives. Attached them to the MOBO SATA connections and the Promise BIOS never saw them. Spend 4 weeks with tech support and eventually gave up and bought a Highpoint Rocketraid 1520. Connected everything up and the drives were found. Initialised & formatted the HDD with Windows XP SP disktools, set up a RAID 1 array and then copied over my data. Only to find it was mostly corrupted. Tried reinstalling and reformatting, but had the same corruption problems. So uninstalled, and started again, but this time set up a RAID 0 array, and all data copied over was fine. So uninstalled and retried with RAID 1 only to find the same corruption problem. Can any one provide a solution to this data corruption problem? Tech support so far has been somewhat poor TIA Ice70 |
#7
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SATA Raid 1 Data Corruption - A7N8X / RocketRaid 1520
Hi TomC
I think I will try and return the card... especially when you get this kind of response form the 'tech support' [quote] We can recommend and RMA replacement. This is not a known controller issue. We rarely hear about data corruption issues that are directly related to the card (it is usually found to be related to a hard disk). [/end quote] Cheers Ice On Thu, 15 Dec 2005 08:03:43 GMT, "TomC" wrote: ice; A couple of years ago I had the same problem -- data corruption in Raid1 with a RocketRaid card. In my case only files 1 MB were corrupted. There were no error messages. I no longer use Highpoint cards. I've become a fan of 3ware RAID cards. They are easy to install, have good documentation, are easy to monitor, give high throughput (the card reduces the CPU load), and are Linux-friendly. 3ware RAID products are a bit more expensive than their competition, and are worth it. You might look at 3ware's 8006-2LP, that will let you mirror your two SATA drives. It is about $120. http://www.provantage.com/buy-73WAR0...t-shopping.htm Good luck. TomC "ice" wrote in message .. . Hi There I have 2 x 250 SATA 150 Seagate drives. Attached them to the MOBO SATA connections and the Promise BIOS never saw them. Spend 4 weeks with tech support and eventually gave up and bought a Highpoint Rocketraid 1520. Connected everything up and the drives were found. Initialised & formatted the HDD with Windows XP SP disktools, set up a RAID 1 array and then copied over my data. Only to find it was mostly corrupted. Tried reinstalling and reformatting, but had the same corruption problems. So uninstalled, and started again, but this time set up a RAID 0 array, and all data copied over was fine. So uninstalled and retried with RAID 1 only to find the same corruption problem. Can any one provide a solution to this data corruption problem? Tech support so far has been somewhat poor TIA Ice70 |
#8
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SATA Raid 1 Data Corruption - A7N8X / RocketRaid 1520
I think I will try and return the card... especially when you get this
kind of response form the 'tech support' I was so disgusted with having wasted over a dozen hours trying to get that little POS to work that I didn't even return it, I trashed it. The data corruption, which was reproducible for large files, was NOT related to a hard disk. It was caused by their card or their driver, since everything else remained in place for the 3ware RAID card, which has worked perfectly since. TomC "ice" wrote in message ... Hi TomC I think I will try and return the card... especially when you get this kind of response form the 'tech support' [quote] We can recommend and RMA replacement. This is not a known controller issue. We rarely hear about data corruption issues that are directly related to the card (it is usually found to be related to a hard disk). [/end quote] Cheers Ice On Thu, 15 Dec 2005 08:03:43 GMT, "TomC" wrote: ice; A couple of years ago I had the same problem -- data corruption in Raid1 with a RocketRaid card. In my case only files 1 MB were corrupted. There were no error messages. I no longer use Highpoint cards. I've become a fan of 3ware RAID cards. They are easy to install, have good documentation, are easy to monitor, give high throughput (the card reduces the CPU load), and are Linux-friendly. 3ware RAID products are a bit more expensive than their competition, and are worth it. You might look at 3ware's 8006-2LP, that will let you mirror your two SATA drives. It is about $120. http://www.provantage.com/buy-73WAR0...t-shopping.htm Good luck. TomC "ice" wrote in message . .. Hi There I have 2 x 250 SATA 150 Seagate drives. Attached them to the MOBO SATA connections and the Promise BIOS never saw them. Spend 4 weeks with tech support and eventually gave up and bought a Highpoint Rocketraid 1520. Connected everything up and the drives were found. Initialised & formatted the HDD with Windows XP SP disktools, set up a RAID 1 array and then copied over my data. Only to find it was mostly corrupted. Tried reinstalling and reformatting, but had the same corruption problems. So uninstalled, and started again, but this time set up a RAID 0 array, and all data copied over was fine. So uninstalled and retried with RAID 1 only to find the same corruption problem. Can any one provide a solution to this data corruption problem? Tech support so far has been somewhat poor TIA Ice70 |
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