Re: [AFMUG] OT: SSD Drives
That also depends on the controller. The biggest thing is the cost of the memory chips. They make 1TB drives. From: Colin Stanners Sent: Friday, July 03, 2015 9:00 PM To: af@afmug.com Subject: Re: [AFMUG] OT: SSD Drives Most SSDs are half - empty inside, more physical space wouldn't help since the controller chip has a limited number of channels that it can use to connect to the memory chips, so the total number of memory chips is limited. On Jul 3, 2015 8:34 PM, Nate Burke n...@blastcomm.com wrote: Why are SSD Drives stuck on 2.5 Form factor? Shouldn't they be able to increase capacity 6 or 8 times just by offering a 3.5 package? Or is it because most servers now are built around 2.5 drives? Do RAID's not scale well with SSD's because of the same rebuild issues plaguing spinning disks?
Re: [AFMUG] see crops grow on signal graph
If install by farm scope 9ft or higher if it only works lower then that don't install it — Sent from Mailbox
[AFMUG] see crops grow on signal graph
I would almost say the #1 problem we face is reflections off cropland, primarily on 5 GHz customer links. One set of problems occur at sundown with no wind. Another occurs as the crops grow. And with crop rotation, we might have problems at a customer location where we had none the year before. Here is an example where you can literally watch the crops grow day by day on the signal graph. Notice the nice roller coaster shaped graph. There are a couple other things going on at this location. At point A we moved the customer's antenna 1-2 feet lower, and changed the mount to a pipe with one of the KPP brackets that lets us slide it up and down on the pipe. Less than a month later, we're in trouble again. At point B a storm damaged the AP omni and the top was open to rain and hornets, it was replaced a couple days later. Strange I don't hear much discussion about this problem, we probably have it at 5% of our customers. Maybe most of you don't have flat land and row crops.
Re: [AFMUG] see crops grow on signal graph
This isn’t corn blocking LOS, it is multipath due to reflections. We get peaks and valleys 20dB variation and unfortunately they move as the crops grow. I used to think going higher was the answer, our typical install height is 15 feet AGL, but even at 25+ feet we see this. In many cases we get better results going lower, if we can get below the last null. At the point marked “A” on the graph we lowered the dish at the customer end, but there was another null below it and as the corn grew the null moved up. Best situation is a hill, ridge, or line of trees in the distance so there is no reflected path. We’ve had a lot of rain this June so there’s a lot of moisture in the crops. Usually things get a little better when the soybeans turn brown or the corn tassels out and starts to dry up. From: Work Sent: Saturday, July 04, 2015 3:15 PM To: af@afmug.com Cc: af@afmug.com Subject: Re: [AFMUG] see crops grow on signal graph If install by farm scope 9ft or higher if it only works lower then that don't install it — Sent from Mailbox On Sat, Jul 4, 2015 at 3:41 PM, Ken Hohhof af...@kwisp.com wrote: I would almost say the #1 problem we face is reflections off cropland, primarily on 5 GHz customer links. One set of problems occur at sundown with no wind. Another occurs as the crops grow. And with crop rotation, we might have problems at a customer location where we had none the year before. Here is an example where you can literally watch the crops grow day by day on the signal graph. Notice the nice roller coaster shaped graph. There are a couple other things going on at this location. At point A we moved the customer's antenna 1-2 feet lower, and changed the mount to a pipe with one of the KPP brackets that lets us slide it up and down on the pipe. Less than a month later, we're in trouble again. At point B a storm damaged the AP omni and the top was open to rain and hornets, it was replaced a couple days later. Strange I don't hear much discussion about this problem, we probably have it at 5% of our customers. Maybe most of you don't have flat land and row crops. crops_growing.png crops_growing.png
Re: [AFMUG] see crops grow on signal graph
Saw first field around here tasseling(no not sweet corn), crazy for this area and 4th of July... Erich Kaiser North Central Tower er...@northcentraltower.com Office: 630-621-4804 Cell: 630-777-9291 On Sat, Jul 4, 2015 at 3:58 PM, Ken Hohhof af...@kwisp.com wrote: This isn’t corn blocking LOS, it is multipath due to reflections. We get peaks and valleys 20dB variation and unfortunately they move as the crops grow. I used to think going higher was the answer, our typical install height is 15 feet AGL, but even at 25+ feet we see this. In many cases we get better results going lower, if we can get below the last null. At the point marked “A” on the graph we lowered the dish at the customer end, but there was another null below it and as the corn grew the null moved up. Best situation is a hill, ridge, or line of trees in the distance so there is no reflected path. We’ve had a lot of rain this June so there’s a lot of moisture in the crops. Usually things get a little better when the soybeans turn brown or the corn tassels out and starts to dry up. *From:* Work timothy.pct...@gmail.com *Sent:* Saturday, July 04, 2015 3:15 PM *To:* af@afmug.com *Cc:* af@afmug.com *Subject:* Re: [AFMUG] see crops grow on signal graph If install by farm scope 9ft or higher if it only works lower then that don't install it — Sent from Mailbox https://www.dropbox.com/mailbox On Sat, Jul 4, 2015 at 3:41 PM, Ken Hohhof af...@kwisp.com wrote: I would almost say the #1 problem we face is reflections off cropland, primarily on 5 GHz customer links. One set of problems occur at sundown with no wind. Another occurs as the crops grow. And with crop rotation, we might have problems at a customer location where we had none the year before. Here is an example where you can literally watch the crops grow day by day on the signal graph. Notice the nice roller coaster shaped graph. There are a couple other things going on at this location. At point A we moved the customer's antenna 1-2 feet lower, and changed the mount to a pipe with one of the KPP brackets that lets us slide it up and down on the pipe. Less than a month later, we're in trouble again. At point B a storm damaged the AP omni and the top was open to rain and hornets, it was replaced a couple days later. Strange I don't hear much discussion about this problem, we probably have it at 5% of our customers. Maybe most of you don't have flat land and row crops. crops_growing.png crops_growing.png
Re: [AFMUG] see crops grow on signal graph
We don't have much flat land.
bp
part15sbs{at}gmail{dot}com
On 7/4/2015 12:41 PM, Ken Hohhof wrote:
Maybe most of you don't have flat land and row crops.
Re: [AFMUG] see crops grow on signal graph
The past two nights have been fade hell. I'm sure tonight will be worse since it's a little warmer today. I really like those installs where we get -65 and then end up with -55 when the corn grows in. We get those that go from -60 to -80 over 4-5 weeks too. Oh, and last winter when 12-14 of snow fell in a day or two. I swear, snow and ice over a nearly flat path creates many more peaks and nulls. On 7/4/2015 3:58 PM, Ken Hohhof wrote: This isn’t corn blocking LOS, it is multipath due to reflections. We get peaks and valleys 20dB variation and unfortunately they move as the crops grow. I used to think going higher was the answer, our typical install height is 15 feet AGL, but even at 25+ feet we see this. In many cases we get better results going lower, if we can get below the last null. At the point marked “A” on the graph we lowered the dish at the customer end, but there was another null below it and as the corn grew the null moved up. Best situation is a hill, ridge, or line of trees in the distance so there is no reflected path. We’ve had a lot of rain this June so there’s a lot of moisture in the crops. Usually things get a little better when the soybeans turn brown or the corn tassels out and starts to dry up. *From:* Work mailto:timothy.pct...@gmail.com *Sent:* Saturday, July 04, 2015 3:15 PM *To:* af@afmug.com mailto:af@afmug.com *Cc:* af@afmug.com mailto:af@afmug.com *Subject:* Re: [AFMUG] see crops grow on signal graph If install by farm scope 9ft or higher if it only works lower then that don't install it — Sent from Mailbox https://www.dropbox.com/mailbox On Sat, Jul 4, 2015 at 3:41 PM, Ken Hohhof af...@kwisp.com mailto:af...@kwisp.com wrote: I would almost say the #1 problem we face is reflections off cropland, primarily on 5 GHz customer links. One set of problems occur at sundown with no wind. Another occurs as the crops grow. And with crop rotation, we might have problems at a customer location where we had none the year before. Here is an example where you can literally watch the crops grow day by day on the signal graph. Notice the nice roller coaster shaped graph. There are a couple other things going on at this location. At point A we moved the customer's antenna 1-2 feet lower, and changed the mount to a pipe with one of the KPP brackets that lets us slide it up and down on the pipe. Less than a month later, we're in trouble again. At point B a storm damaged the AP omni and the top was open to rain and hornets, it was replaced a couple days later. Strange I don't hear much discussion about this problem, we probably have it at 5% of our customers. Maybe most of you don't have flat land and row crops. crops_growing.png crops_growing.png
Re: [AFMUG] see crops grow on signal graph
That’s crazy. If tassels are way out of sync with silk, the ears won’t get pollinated. From: Erich Kaiser Sent: Saturday, July 04, 2015 8:09 PM To: af@afmug.com Subject: Re: [AFMUG] see crops grow on signal graph Saw first field around here tasseling(no not sweet corn), crazy for this area and 4th of July... Erich Kaiser North Central Tower er...@northcentraltower.com Office: 630-621-4804 Cell: 630-777-9291 On Sat, Jul 4, 2015 at 3:58 PM, Ken Hohhof af...@kwisp.com wrote: This isn’t corn blocking LOS, it is multipath due to reflections. We get peaks and valleys 20dB variation and unfortunately they move as the crops grow. I used to think going higher was the answer, our typical install height is 15 feet AGL, but even at 25+ feet we see this. In many cases we get better results going lower, if we can get below the last null. At the point marked “A” on the graph we lowered the dish at the customer end, but there was another null below it and as the corn grew the null moved up. Best situation is a hill, ridge, or line of trees in the distance so there is no reflected path. We’ve had a lot of rain this June so there’s a lot of moisture in the crops. Usually things get a little better when the soybeans turn brown or the corn tassels out and starts to dry up. From: Work Sent: Saturday, July 04, 2015 3:15 PM To: af@afmug.com Cc: af@afmug.com Subject: Re: [AFMUG] see crops grow on signal graph If install by farm scope 9ft or higher if it only works lower then that don't install it — Sent from Mailbox On Sat, Jul 4, 2015 at 3:41 PM, Ken Hohhof af...@kwisp.com wrote: I would almost say the #1 problem we face is reflections off cropland, primarily on 5 GHz customer links. One set of problems occur at sundown with no wind. Another occurs as the crops grow. And with crop rotation, we might have problems at a customer location where we had none the year before. Here is an example where you can literally watch the crops grow day by day on the signal graph. Notice the nice roller coaster shaped graph. There are a couple other things going on at this location. At point A we moved the customer's antenna 1-2 feet lower, and changed the mount to a pipe with one of the KPP brackets that lets us slide it up and down on the pipe. Less than a month later, we're in trouble again. At point B a storm damaged the AP omni and the top was open to rain and hornets, it was replaced a couple days later. Strange I don't hear much discussion about this problem, we probably have it at 5% of our customers. Maybe most of you don't have flat land and row crops. crops_growing.png crops_growing.png
Re: [AFMUG] OT: SSD Drives
Unless Storage Class Memory beats it to the punch. Storage Class Memory
will change everything.
bp
part15sbs{at}gmail{dot}com
On 7/3/2015 6:46 PM, Ken Hohhof wrote:
I think the next step up is PCIe.
-Original Message- From: Nate Burke Sent: Friday, July 03,
2015 8:34 PM To: Animal Farm Subject: [AFMUG] OT: SSD Drives
Why are SSD Drives stuck on 2.5 Form factor? Shouldn't they be able
to increase capacity 6 or 8 times just by offering a 3.5 package? Or
is it because most servers now are built around 2.5 drives? Do
RAID's not scale well with SSD's because of the same rebuild issues
plaguing spinning disks?
