Re: [AFMUG] 48V 100AH Lithium Batts source?

They actually look like they would work well for our TT. -- bp part15sbs{at}gmail{dot}com On Wed, Jan 27, 2021 at 9:39 PM Peter Kranz via AF wrote: > I prefer the packaged solutions these days.. easier for my field techs to > deal with a monolithic unit. But if I was homebrewing something for a

Re: [AFMUG] 48V 100AH Lithium Batts source?

I prefer the packaged solutions these days.. easier for my field techs to deal with a monolithic unit. But if I was homebrewing something for a project I would give those 280Ah cells a go. Peter Kranz www.UnwiredLtd.com Desk: 510-868-1614 x100 Mobile: 510-207-

Re: [AFMUG] 48V 100AH Lithium Batts source?

Have you tried those Peter? Looking around, it looks like you can make a 12V/280AH battery for < $400, or a 48V/280AH battery for ~~ $1400? That's less than AGM. bp On 1/27/2021 2:37 PM, Peter Kranz via AF wrote:

Re: [AFMUG] 48V 100AH Lithium Batts source?

I was very happy with the ones I got from Meritsun. I used them in a 48V golf cart arrangement with 12v/100ah. They have rack mount too though I think. From: AF Date: Tuesday, January 26, 2021 at 8:07 AM To: AnimalFarm Microwave Users Group Subject: [AFMUG] 48V 100AH Lithium Batts source? Col

Re: [AFMUG] 48V 100AH Lithium Batts source?

You could also build from scratch using 280Ah cells like this: https://youtu.be/3U4ZfQ_IToI Peter Kranz www.UnwiredLtd.com Desk: 510-868-1614 x100 Mobile: 510-207- pkr...@unwiredltd.com From: AF On Behalf Of Peter Kranz via

Re: [AFMUG] OT: Google storage math

I’m guessing they dont swap individual dead drives. I’d bet that they'd mark the drive with the issue offline until enough in the chassis are offline for the server to be physically replaced. Otherwise it’d seem it’d be too much work doing individual drives all day every day. We had a Mozy/EMC/

Re: [AFMUG] OT: Google storage math

There are other form factors (E.G. M.2 an example), that have pretty darn fast interfaces. But I think the driving issues are going to be speed and the ability to swap them quickly and easily. bp On 1/27/2021 11:36 AM, Nate Burke wrote:

Re: [AFMUG] OT: Google storage math

SSD is focused on laptops.. 2.5".. I imagine Google could spin whatever disc size they want to optimize power. Power is the ruling parameter in data centers. Spinning disks are going away, if not completely gone in data centers. On 01/27/2021 11:36 AM, Nate Burke wrote: Looks like 30TB

Re: [AFMUG] OT: Google storage math

Looks like 30TB SSD drives exist in a 2.5" Form factor now. https://www.newegg.com/samsung-pm1643-30-72tb/p/2U3-0005-000H7?item=9SIA994CAV5304 In theory price should continue to drop like they did with all previous sizes. I'm not sure why SSD is fixated on the 2.5" size. I would think that with

Re: [AFMUG] OT: Today's poor kids and streaming video

Plex 100% yes for all your media.. I bought 2 roku ultras just so we could access it with ease now ALEXA does my bidding... Is this bad LOL :) On 1/24/21 5:10 PM, Zach Underwood wrote: I think Plex handle this really well. When you pause something it will freeze the screen when some a button

Re: [AFMUG] Odd centos issue

Steve,  Have a look at https://phoenixnap.com/kb/centos-8-early-eol-in-2021 This may concern or may not.. I moved all my centos boxes early in 2017 to debian. Dont regret that move at all. On 1/25/21 6:27 PM, Steve Jones wrote: So i have a centos server running openfire for our trillian client

Re: [AFMUG] 48V 100AH Lithium Batts source?

Pylontech is a good source from what I hear: http://en.pylontech.com.cn/pro_list.aspx?cid=23 However I have not ordered any units from them yet. Peter Kranz www.UnwiredLtd.com Desk: 510-868-1614 x100 Mobile: 510-207- pkr...@unwiredltd.com

Re: [AFMUG] OT: Google storage math

Recently, I read an article about spinning disks that should scale to 80 TB per 3.5" drive. - Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP - Original Message - From: "Bill Prince" To: af@af.afmug.com Sent: Wednesday, Janua

Re: [AFMUG] OT: Google storage math

I would think that SSD Advances would be part of this too. 2TB is commercially available in a 2.5" form factor If you had a purpose built 4U storage module with SSD Tech, wouldn't it be 100's of TB with almost no power draw? On 1/27/2021 11:32 AM, Bill Prince wrote: I read an analysis recen

Re: [AFMUG] OT: Google storage math

On 1/27/21 9:26 AM, Mathew Howard wrote: It doesn't take into account the capacity of new drives increasing either though, so it could very well be close to linear, as far as physical space goes. Also consider what pays for all of the free stuff: total lack of privacy online. If things start

Re: [AFMUG] OT: Google storage math

I read an analysis recently (unfortunately I don't remember where it was) discussing the optimum size for a storage device. It was making the argument that the size itself becomes a problem when it exceeds 16TB or thereabouts. When it gets much larger, it interfer

Re: [AFMUG] OT: Google storage math

It doesn't take into account the capacity of new drives increasing either though, so it could very well be close to linear, as far as physical space goes. On Wed, Jan 27, 2021 at 11:11 AM Bill Prince wrote: > That does not take into account the rate of growth. It's probably not > linear, but I w

Re: [AFMUG] OT: Google storage math

That does not take into account the rate of growth. It's probably not linear, but I would not know if it is geometric or what. bp On 1/27/2021 8:42 AM, Chuck McCown via AF wrote: Off by a factor of 10.  Each data c

Re: [AFMUG] OT: Google storage math

this is distributed content isnt it, its not like all of google is in a single server room, so wouldnt that scale up? Somebody talked once about one of the alphabet gubmint agencies having massive warehouse room with a usb drive for each subject they surveil. maybe google does that too On Wed, Jan

Re: [AFMUG] OT: Google storage math

Off by a factor of 10. Each data center would be good for 140 years... From: Chuck McCown via AF Sent: Wednesday, January 27, 2021 9:12 AM To: AnimalFarm Microwave Users Group Cc: Chuck McCown Subject: Re: [AFMUG] OT: Google storage math In one small corner of the larger data centers. Those

Re: [AFMUG] OT: Google storage math

In one small corner of the larger data centers. Those things are huge. 3000 square feed (including aisle space) against 10 acre data centers. Each data center would be good for 14 years and there are hundreds of data centers. From: Bill Prince Sent: Wednesday, January 27, 2021 6:43 AM To:

Re: [AFMUG] OT: Google storage math

I look at it a different way. First, they are probably using 16TB drives (although I don't know). Based on what I've read, 16TB is the sweet spot for efficient large storage. That said, a single rack a day seems like a big deal to me. That's 365 racks per year. Yeesh. Talk about real estate. They a