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#1
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Proliant expandability?
Sorry everyone's picking your brain NutCracker but that's what you get
for knowing stuff I have a couple of 1850R's and I decided to get a 2X1 cage running off an SA3200 in one of them and left the other single cage with a dlt off one of the SCSI channels. Is there a way to run each cage off it's own channel so I can span the array or do the cages have to be daisy chained ? Can you please explain the cabling needed in detail (ie lower or upper connector etc.) if you have the answer ? Regards David You dont have dual channel controlles. You may have 2 221's in a singel server, with each card servicing a channel of the cage... is that where the question about spanning controllers came in? The 221 is a singel channel, ultra2 controller with 6M of onboard read-only, non battery backed cache. It was introduced to replace the Smart2 SL, the 40MB/s WideUltra controller. I like the 5500's... you should really have SA3200's in those boxes, with a duplexed drive cage. Depeneding on which model you have (WUS3, or U2/U3) you will be able to get the most capacity out of your drive cage, and span an array set across both channels for best performance. LC "Robert Bates" wrote in message news:WFBac.151804$po.895326@attbi_s52... Thanks for the reply. I have a pair of PL5500s with 221 raid cards. "NuT CrAcKeR" wrote in message ... that depends on the array controller. I am not aware of any compaq controllers that will allow you to "span" array containers (or volumes) across controllers. Some of the older Mylex and AMI controller allowed for this. So, if you have a 2 channel controller, you can create a raid set with disks from both channels, and it will appear as 1 disk to the OS. You have lots of options... what server and array controller do you have? LC "Robert Bates" wrote in message news:lIqac.41280$K91.106956@attbi_s02... NuT CrAcKeR: I have not filled what I have yet, but on a two channel raid card, does the server see each channel as a unique raid or just one raid for the card? Also would two, two channel cards be one big raid, two, or four? "Mark S" wrote in message ... "Sharmon" wrote in message ... I just use a Belkin USB2 card with 2 160 GB drives plugged into it on my PL1850R and they work great Now theres a thought!!! Thanks, Mark S |
#2
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Hello David,
Dont worry about picking my brain. Why do you think I post here? ; ) To the best of my knowledge, the 2x cages for the 1850 have to be daisy chained. There is a small ribbon cable that connects the two cages together, and from what I can asertain, it is how the 2nd drive cage gets its SCSI ID information. When the expansion cage was purchased as an option for the 1850, it came with that cable. I have not found any sellers that offer " just " that cable on ebay, or via other channels. Then again, I have never personally been in the market for just that piece, so my searches have not been comprehensive, or exhaustive. There was another thread in this group that dealt specifically with this matter. I even believe there was a part number referenced for the cable itself. Do a google and you should be able to find it. By and large, {compaq} array controllers are not suitable for driving DLT Tape drives. This should be handled by the onboard SCSI controller on the server. If you have any other questions, I will do my best to answer them. LC "Sharmon" wrote in message ... Sorry everyone's picking your brain NutCracker but that's what you get for knowing stuff I have a couple of 1850R's and I decided to get a 2X1 cage running off an SA3200 in one of them and left the other single cage with a dlt off one of the SCSI channels. Is there a way to run each cage off it's own channel so I can span the array or do the cages have to be daisy chained ? Can you please explain the cabling needed in detail (ie lower or upper connector etc.) if you have the answer ? Regards David You dont have dual channel controlles. You may have 2 221's in a singel server, with each card servicing a channel of the cage... is that where the question about spanning controllers came in? The 221 is a singel channel, ultra2 controller with 6M of onboard read-only, non battery backed cache. It was introduced to replace the Smart2 SL, the 40MB/s WideUltra controller. I like the 5500's... you should really have SA3200's in those boxes, with a duplexed drive cage. Depeneding on which model you have (WUS3, or U2/U3) you will be able to get the most capacity out of your drive cage, and span an array set across both channels for best performance. LC "Robert Bates" wrote in message news:WFBac.151804$po.895326@attbi_s52... Thanks for the reply. I have a pair of PL5500s with 221 raid cards. "NuT CrAcKeR" wrote in message ... that depends on the array controller. I am not aware of any compaq controllers that will allow you to "span" array containers (or volumes) across controllers. Some of the older Mylex and AMI controller allowed for this. So, if you have a 2 channel controller, you can create a raid set with disks from both channels, and it will appear as 1 disk to the OS. You have lots of options... what server and array controller do you have? LC "Robert Bates" wrote in message news:lIqac.41280$K91.106956@attbi_s02... NuT CrAcKeR: I have not filled what I have yet, but on a two channel raid card, does the server see each channel as a unique raid or just one raid for the card? Also would two, two channel cards be one big raid, two, or four? "Mark S" wrote in message ... "Sharmon" wrote in message ... I just use a Belkin USB2 card with 2 160 GB drives plugged into it on my PL1850R and they work great Now theres a thought!!! Thanks, Mark S |
#3
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Thanks NutCracker. The cable that you are talking about is the Data
Sync cable , it should be 10 inches in length and 12 pins straight though (I used a cut down IDE cable to make it look nice) . The classic symptom of the cable missing is drives in the 2X1 cage will light up as soon as power is applied (morons at HP "support" will tell you your backplane is gone and needs replacing, try it I had 3 tell me this and never even ask if the datasync was there). The way I set them up is cable (must be LVD "twisted-flat") from controller port 1 to bottom of 2X1 . then another point to point LVD from top of 2X1 to connector of second U2 cage (must be LVD U2 cage not the UW3) . I was hoping you knew a little trick to split the cages up. PS there is 1 misc kit left in NA which contains this stupidly rare cable and it costs 134.95 which was why I made my own Thanks a bunch Nut David Hello David, Dont worry about picking my brain. Why do you think I post here? ; ) To the best of my knowledge, the 2x cages for the 1850 have to be daisy chained. There is a small ribbon cable that connects the two cages together, and from what I can asertain, it is how the 2nd drive cage gets its SCSI ID information. When the expansion cage was purchased as an option for the 1850, it came with that cable. I have not found any sellers that offer " just " that cable on ebay, or via other channels. Then again, I have never personally been in the market for just that piece, so my searches have not been comprehensive, or exhaustive. There was another thread in this group that dealt specifically with this matter. I even believe there was a part number referenced for the cable itself. Do a google and you should be able to find it. By and large, {compaq} array controllers are not suitable for driving DLT Tape drives. This should be handled by the onboard SCSI controller on the server. If you have any other questions, I will do my best to answer them. LC "Sharmon" wrote in message .. . Sorry everyone's picking your brain NutCracker but that's what you get for knowing stuff I have a couple of 1850R's and I decided to get a 2X1 cage running off an SA3200 in one of them and left the other single cage with a dlt off one of the SCSI channels. Is there a way to run each cage off it's own channel so I can span the array or do the cages have to be daisy chained ? Can you please explain the cabling needed in detail (ie lower or upper connector etc.) if you have the answer ? Regards David You dont have dual channel controlles. You may have 2 221's in a singel server, with each card servicing a channel of the cage... is that where the question about spanning controllers came in? The 221 is a singel channel, ultra2 controller with 6M of onboard read-only, non battery backed cache. It was introduced to replace the Smart2 SL, the 40MB/s WideUltra controller. I like the 5500's... you should really have SA3200's in those boxes, with a duplexed drive cage. Depeneding on which model you have (WUS3, or U2/U3) you will be able to get the most capacity out of your drive cage, and span an array set across both channels for best performance. LC "Robert Bates" wrote in message news:WFBac.151804$po.895326@attbi_s52... Thanks for the reply. I have a pair of PL5500s with 221 raid cards. "NuT CrAcKeR" wrote in message ... that depends on the array controller. I am not aware of any compaq controllers that will allow you to "span" array containers (or volumes) across controllers. Some of the older Mylex and AMI controller allowed for this. So, if you have a 2 channel controller, you can create a raid set with disks from both channels, and it will appear as 1 disk to the OS. You have lots of options... what server and array controller do you have? LC "Robert Bates" wrote in message news:lIqac.41280$K91.106956@attbi_s02... NuT CrAcKeR: I have not filled what I have yet, but on a two channel raid card, does the server see each channel as a unique raid or just one raid for the card? Also would two, two channel cards be one big raid, two, or four? "Mark S" wrote in message ... "Sharmon" wrote in message ... I just use a Belkin USB2 card with 2 160 GB drives plugged into it on my PL1850R and they work great Now theres a thought!!! Thanks, Mark S |
#4
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if you want to send me the 2nd cage i would be happy to experement with it and
work out the wiring details. i am sure with a terminator and a "kludge" cable the 2nd cage could be taught to work stand alone. bill Sharmon wrote: Thanks NutCracker. The cable that you are talking about is the Data Sync cable , it should be 10 inches in length and 12 pins straight though (I used a cut down IDE cable to make it look nice) . The classic symptom of the cable missing is drives in the 2X1 cage will light up as soon as power is applied (morons at HP "support" will tell you your backplane is gone and needs replacing, try it I had 3 tell me this and never even ask if the datasync was there). The way I set them up is cable (must be LVD "twisted-flat") from controller port 1 to bottom of 2X1 . then another point to point LVD from top of 2X1 to connector of second U2 cage (must be LVD U2 cage not the UW3) . I was hoping you knew a little trick to split the cages up. PS there is 1 misc kit left in NA which contains this stupidly rare cable and it costs 134.95 which was why I made my own Thanks a bunch Nut David Hello David, Dont worry about picking my brain. Why do you think I post here? ; ) To the best of my knowledge, the 2x cages for the 1850 have to be daisy chained. There is a small ribbon cable that connects the two cages together, and from what I can asertain, it is how the 2nd drive cage gets its SCSI ID information. When the expansion cage was purchased as an option for the 1850, it came with that cable. I have not found any sellers that offer " just " that cable on ebay, or via other channels. Then again, I have never personally been in the market for just that piece, so my searches have not been comprehensive, or exhaustive. There was another thread in this group that dealt specifically with this matter. I even believe there was a part number referenced for the cable itself. Do a google and you should be able to find it. By and large, {compaq} array controllers are not suitable for driving DLT Tape drives. This should be handled by the onboard SCSI controller on the server. If you have any other questions, I will do my best to answer them. LC "Sharmon" wrote in message .. . Sorry everyone's picking your brain NutCracker but that's what you get for knowing stuff I have a couple of 1850R's and I decided to get a 2X1 cage running off an SA3200 in one of them and left the other single cage with a dlt off one of the SCSI channels. Is there a way to run each cage off it's own channel so I can span the array or do the cages have to be daisy chained ? Can you please explain the cabling needed in detail (ie lower or upper connector etc.) if you have the answer ? Regards David You dont have dual channel controlles. You may have 2 221's in a singel server, with each card servicing a channel of the cage... is that where the question about spanning controllers came in? The 221 is a singel channel, ultra2 controller with 6M of onboard read-only, non battery backed cache. It was introduced to replace the Smart2 SL, the 40MB/s WideUltra controller. I like the 5500's... you should really have SA3200's in those boxes, with a duplexed drive cage. Depeneding on which model you have (WUS3, or U2/U3) you will be able to get the most capacity out of your drive cage, and span an array set across both channels for best performance. LC "Robert Bates" wrote in message news:WFBac.151804$po.895326@attbi_s52... Thanks for the reply. I have a pair of PL5500s with 221 raid cards. "NuT CrAcKeR" wrote in message ... that depends on the array controller. I am not aware of any compaq controllers that will allow you to "span" array containers (or volumes) across controllers. Some of the older Mylex and AMI controller allowed for this. So, if you have a 2 channel controller, you can create a raid set with disks from both channels, and it will appear as 1 disk to the OS. You have lots of options... what server and array controller do you have? LC "Robert Bates" wrote in message news:lIqac.41280$K91.106956@attbi_s02... NuT CrAcKeR: I have not filled what I have yet, but on a two channel raid card, does the server see each channel as a unique raid or just one raid for the card? Also would two, two channel cards be one big raid, two, or four? "Mark S" wrote in message ... "Sharmon" wrote in message ... I just use a Belkin USB2 card with 2 160 GB drives plugged into it on my PL1850R and they work great Now theres a thought!!! Thanks, Mark S |
#5
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I just went through the same cabling adventure...
The cable from the raid controller attaches to the lower port on the backplane of the 2x1 cage. The upper port is connected with another scsi cable that attaches to the 4x1 cage. There is a third cable, using 11 pins, that connects the two drive cages. This cable is difficult to find, but easily made since its a straight through cable. You can cut down an old IDE cable and use it. Just make sure you have the connectors facing the same way. Both cages are daisy chained to the same port on the raid controller. You can create arrays using any combination of drives in the two cages. VinceV Sharmon wrote in message . .. Sorry everyone's picking your brain NutCracker but that's what you get for knowing stuff I have a couple of 1850R's and I decided to get a 2X1 cage running off an SA3200 in one of them and left the other single cage with a dlt off one of the SCSI channels. Is there a way to run each cage off it's own channel so I can span the array or do the cages have to be daisy chained ? Can you please explain the cabling needed in detail (ie lower or upper connector etc.) if you have the answer ? Regards David |
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