Re: PDU recommendations
Subject: Re: PDU recommendations Date: Sun, Jun 23, 2013 at 09:32:00PM -0400 Quoting shawn wilson (ag4ve...@gmail.com): So, that's not a very good endorsement :) Idk why you'd use a fuse in a PDU. MCB units age. Especially with vibration. A 10A MCB becomes a 9A MCB after some miles. Fuses don't. MCB units are good at protecting people since they trip quickly and aggressively. Fuses tend to linger before blowing, and thus are comparatively bad at protecting people (longer shock) but better at protecting infrastructure (surge and switch-on-transient resistance). -- Måns Nilsson primary/secondary/besserwisser/machina MN-1334-RIPE +46 705 989668 There's a little picture of ED MCMAHON doing BAD THINGS to JOAN RIVERS in a $200,000 MALIBU BEACH HOUSE!! signature.asc Description: Digital signature
Re: PDU recommendations
Does anyone on list have experience with the APC AP7920 switched rack PDU, or any of the horizontal rack mountables with management? We're looking at these for our remote sites. Sent from my iPhone On Jun 24, 2013, at 6:10 AM, Måns Nilsson mansa...@besserwisser.org wrote: Subject: Re: PDU recommendations Date: Sun, Jun 23, 2013 at 09:32:00PM -0400 Quoting shawn wilson (ag4ve...@gmail.com): So, that's not a very good endorsement :) Idk why you'd use a fuse in a PDU. MCB units age. Especially with vibration. A 10A MCB becomes a 9A MCB after some miles. Fuses don't. MCB units are good at protecting people since they trip quickly and aggressively. Fuses tend to linger before blowing, and thus are comparatively bad at protecting people (longer shock) but better at protecting infrastructure (surge and switch-on-transient resistance). -- Måns Nilsson primary/secondary/besserwisser/machina MN-1334-RIPE +46 705 989668 There's a little picture of ED MCMAHON doing BAD THINGS to JOAN RIVERS in a $200,000 MALIBU BEACH HOUSE!!
Re: PDU recommendations
We seem to always get calls from uplogix.. Check them out if you are considering managing pdu's etc. Their gear is pretty stout, and they have good to great support. Sent from my Mobile Device. Original message From: Ryan - Lists rlambert.li...@gmail.com Date: 06/24/2013 11:43 AM (GMT-08:00) To: Måns Nilsson mansa...@besserwisser.org Cc: North American Network Operators Group nanog@nanog.org Subject: Re: PDU recommendations Does anyone on list have experience with the APC AP7920 switched rack PDU, or any of the horizontal rack mountables with management? We're looking at these for our remote sites. Sent from my iPhone On Jun 24, 2013, at 6:10 AM, Måns Nilsson mansa...@besserwisser.org wrote: Subject: Re: PDU recommendations Date: Sun, Jun 23, 2013 at 09:32:00PM -0400 Quoting shawn wilson (ag4ve...@gmail.com): So, that's not a very good endorsement :) Idk why you'd use a fuse in a PDU. MCB units age. Especially with vibration. A 10A MCB becomes a 9A MCB after some miles. Fuses don't. MCB units are good at protecting people since they trip quickly and aggressively. Fuses tend to linger before blowing, and thus are comparatively bad at protecting people (longer shock) but better at protecting infrastructure (surge and switch-on-transient resistance). -- Måns Nilsson primary/secondary/besserwisser/machina MN-1334-RIPE +46 705 989668 There's a little picture of ED MCMAHON doing BAD THINGS to JOAN RIVERS in a $200,000 MALIBU BEACH HOUSE!!
Re: PDU recommendations
Hi, Yes. They are good. Nothing I would deploy in a large data center but for a few racks they are perfect. Beware that they are not built to be connected straight to the internet =D. The management module can reset depending on packet payload and overall traffic. They should always be behind some sort of firewall with rules limiting its access. PS: Ours are a few years old, I'm sure APC added some sort of security since then, you may want to look 'em up. Happy 24th to all. - Alain Hebertaheb...@pubnix.net PubNIX Inc. 50 boul. St-Charles P.O. Box 26770 Beaconsfield, Quebec H9W 6G7 Tel: 514-990-5911 http://www.pubnix.netFax: 514-990-9443 On 06/24/13 14:41, Ryan - Lists wrote: Does anyone on list have experience with the APC AP7920 switched rack PDU, or any of the horizontal rack mountables with management? We're looking at these for our remote sites. Sent from my iPhone On Jun 24, 2013, at 6:10 AM, Måns Nilsson mansa...@besserwisser.org wrote: Subject: Re: PDU recommendations Date: Sun, Jun 23, 2013 at 09:32:00PM -0400 Quoting shawn wilson (ag4ve...@gmail.com): So, that's not a very good endorsement :) Idk why you'd use a fuse in a PDU. MCB units age. Especially with vibration. A 10A MCB becomes a 9A MCB after some miles. Fuses don't. MCB units are good at protecting people since they trip quickly and aggressively. Fuses tend to linger before blowing, and thus are comparatively bad at protecting people (longer shock) but better at protecting infrastructure (surge and switch-on-transient resistance). -- Måns Nilsson primary/secondary/besserwisser/machina MN-1334-RIPE +46 705 989668 There's a little picture of ED MCMAHON doing BAD THINGS to JOAN RIVERS in a $200,000 MALIBU BEACH HOUSE!!
Re: PDU recommendations
Heh, I wouldn't dream of putting this type of device on the net - nothing good can come from that. On Jun 24, 2013 3:04 PM, Alain Hebert aheb...@pubnix.net wrote: Hi, Yes. They are good. Nothing I would deploy in a large data center but for a few racks they are perfect. Beware that they are not built to be connected straight to the internet =D. The management module can reset depending on packet payload and overall traffic. They should always be behind some sort of firewall with rules limiting its access. PS: Ours are a few years old, I'm sure APC added some sort of security since then, you may want to look 'em up. Happy 24th to all. - Alain Hebertaheb...@pubnix.net PubNIX Inc. 50 boul. St-Charles P.O. Box 26770 Beaconsfield, Quebec H9W 6G7 Tel: 514-990-5911 http://www.pubnix.netFax: 514-990-9443 On 06/24/13 14:41, Ryan - Lists wrote: Does anyone on list have experience with the APC AP7920 switched rack PDU, or any of the horizontal rack mountables with management? We're looking at these for our remote sites. Sent from my iPhone On Jun 24, 2013, at 6:10 AM, Måns Nilsson mansa...@besserwisser.org wrote: Subject: Re: PDU recommendations Date: Sun, Jun 23, 2013 at 09:32:00PM -0400 Quoting shawn wilson (ag4ve...@gmail.com): So, that's not a very good endorsement :) Idk why you'd use a fuse in a PDU. MCB units age. Especially with vibration. A 10A MCB becomes a 9A MCB after some miles. Fuses don't. MCB units are good at protecting people since they trip quickly and aggressively. Fuses tend to linger before blowing, and thus are comparatively bad at protecting people (longer shock) but better at protecting infrastructure (surge and switch-on-transient resistance). -- Måns Nilsson primary/secondary/besserwisser/machina MN-1334-RIPE +46 705 989668 There's a little picture of ED MCMAHON doing BAD THINGS to JOAN RIVERS in a $200,000 MALIBU BEACH HOUSE!!
Re: PDU recommendations
Oh, absolutely. These would be secured on a separate, private network with very specific access controls. These remote sites are more branch than data center. Looking at a very limited amount of equipment (1-2 open telco racks/site). Sent from my iPhone On Jun 24, 2013, at 3:01 PM, Alain Hebert aheb...@pubnix.net wrote: Hi, Yes. They are good. Nothing I would deploy in a large data center but for a few racks they are perfect. Beware that they are not built to be connected straight to the internet =D. The management module can reset depending on packet payload and overall traffic. They should always be behind some sort of firewall with rules limiting its access. PS: Ours are a few years old, I'm sure APC added some sort of security since then, you may want to look 'em up. Happy 24th to all. - Alain Hebertaheb...@pubnix.net PubNIX Inc. 50 boul. St-Charles P.O. Box 26770 Beaconsfield, Quebec H9W 6G7 Tel: 514-990-5911 http://www.pubnix.netFax: 514-990-9443 On 06/24/13 14:41, Ryan - Lists wrote: Does anyone on list have experience with the APC AP7920 switched rack PDU, or any of the horizontal rack mountables with management? We're looking at these for our remote sites. Sent from my iPhone On Jun 24, 2013, at 6:10 AM, Måns Nilsson mansa...@besserwisser.org wrote: Subject: Re: PDU recommendations Date: Sun, Jun 23, 2013 at 09:32:00PM -0400 Quoting shawn wilson (ag4ve...@gmail.com): So, that's not a very good endorsement :) Idk why you'd use a fuse in a PDU. MCB units age. Especially with vibration. A 10A MCB becomes a 9A MCB after some miles. Fuses don't. MCB units are good at protecting people since they trip quickly and aggressively. Fuses tend to linger before blowing, and thus are comparatively bad at protecting people (longer shock) but better at protecting infrastructure (surge and switch-on-transient resistance). -- Måns Nilsson primary/secondary/besserwisser/machina MN-1334-RIPE +46 705 989668 There's a little picture of ED MCMAHON doing BAD THINGS to JOAN RIVERS in a $200,000 MALIBU BEACH HOUSE!!
Re: PDU recommendations
On Sun, 23 Jun 2013 11:37:43 -0400, shawn wilson ag4ve...@gmail.com wrote: However, I figured I'd see if there was a better brand / specific model recommendations for quality or bang / buck? On Sun, 23 Jun 2013 12:02:27 -0400, Michael Loftis mlof...@wgops.com wrote: (knock on wood) nothing in the last 6-7 years has caused an outage. APC's are what I've grown to love... mostly because they're cheap and plentiful (eBay!) The only issue I've had with them is flash corruption; sometimes they have to be reprogrammed after a power outage. I'm using metered PDUs so it never effects the servers. But I also have a set of ServerTech dual-feed units. The full monty of DC features. (in fact, what a number of colo providers use.) I've not used them in years, 'tho -- lack of facilities to power them. (the electrician got a little happy cutting out old wiring in the current office and killed the two existing L6-30 drops. everything else is L21-20.)
Re: PDU recommendations
I was wondering if anyone had experience with Geist's outlet monitoring product? I recently started using there basic PDU's and so far so good. But am wondering if anyone has feed back on Geist's outlet monitoring product. Mark Keymer
Re: PDU recommendations
On 6/23/2013 11:37 AM, shawn wilson wrote: We currently use Triplite stuff but they've got an issue where after a few minutes, they stop accepting new tcp connections. We're adding a new 30A circuit and I'm thinking of going with APC (ran them in the past and never had any issues). However, I figured I'd see if there was a better brand / specific model recommendations for quality or bang / buck? Specs: 30A 24+ port 0U, managed (with ssh), lcd use display. Shawn, I'd go with APC it's quite monitorable and most NMS packages including Zenoss (where I work) have extensions to monitor it. There's a half dozen open source ZenPacks for APC including UPS's and PDU's. Andrew
Re: PDU recommendations
Personally have gotten sick of dealing with basically every other vendors PDU out there but APC. APC PDUs may not have every whiz-bang feature but they work. SNMP or SSH pretty solid. You still probably want them on a closed management network but problems even in the wild 'net with port 22 open in my experience have been rare. Management software upgrades are generally live, load left on/undisturbed. I still schedule them for downtime but (knock on wood) nothing in the last 6-7 years has caused an outage.
Re: PDU recommendations
Hello Michael, does that mean you do not employ PDUs in your network? I.e., found a UPS with sufficient number of outlets in the back. With that in mind, could you make a recommendation for such a UPS-direct for a VM environment. Kind Regards, Nick.
Re: PDU recommendations
No, I only use APC anymore for PDUs. It's the others I've dealt with I don't like. There's quite a few I've never used but after the painfully expensive experiences I've had with Tripp-Lite, Bay tech, MGE (though I think they're part of Schneider or APC now), Liebert (which at the time looked suspiciously the same as the Tripp-Lite's but with a bigger price tag), and a couple others I'm certainly forgetting. I'd heard there were some bad batches that were DOA from APC, but haven't personally experienced any myself. I've had a couple management cards in Symmetra LXes fail, and that same Symmetra chassis had a power/inverter/charger module fail around the same time. On Sun, Jun 23, 2013 at 9:13 AM, Nick Khamis sym...@gmail.com wrote: Hello Michael, does that mean you do not employ PDUs in your network? I.e., found a UPS with sufficient number of outlets in the back. With that in mind, could you make a recommendation for such a UPS-direct for a VM environment. Kind Regards, Nick. -- Genius might be described as a supreme capacity for getting its possessors into trouble of all kinds. -- Samuel Butler
Re: PDU recommendations
APC is solid. Their newer line can provide outlet metering. WTI is also good...they support redundant circuits. I've seen Baytech died after just unplugging a server. --Original Message-- From: shawn wilson To: North American Network Operators Group Subject: PDU recommendations Sent: Jun 23, 2013 8:37 AM We currently use Triplite stuff but they've got an issue where after a few minutes, they stop accepting new tcp connections. We're adding a new 30A circuit and I'm thinking of going with APC (ran them in the past and never had any issues). However, I figured I'd see if there was a better brand / specific model recommendations for quality or bang / buck? Specs: 30A 24+ port 0U, managed (with ssh), lcd use display.
Re: PDU recommendations
On 23/06/2013 20:05, trit...@cox.net wrote: APC is solid. Their newer line can provide outlet metering. That's an improvement then. Raritan has had this feature for years, with visibility via SNMP. This was one of the reasons I dumped APC a couple of years ago. Nick
Re: PDU recommendations
On 6/23/13 12:08 PM, Nick Hilliard wrote: That's an improvement then. Raritan has had this feature for years, with visibility via SNMP. This was one of the reasons I dumped APC a couple of years ago. The APC metered-by-outlet series are relatively new. I figured it was inevitable when I was scrolling through the menus on a new genreation 2 PDU a while back and it listed outlet metering in the menu (although it didn't do anything). ~Seth
Re: PDU recommendations
Raritan has a good line, the usual features, we use a lot of 2U, 208v,30A units with 20xc13 which is a good config these days Their central management software, while not perfect, is excellent for pdu control On Jun 23, 2013, at 8:37 AM, shawn wilson ag4ve...@gmail.com wrote: We currently use Triplite stuff but they've got an issue where after a few minutes, they stop accepting new tcp connections. We're adding a new 30A circuit and I'm thinking of going with APC (ran them in the past and never had any issues). However, I figured I'd see if there was a better brand / specific model recommendations for quality or bang / buck? Specs: 30A 24+ port 0U, managed (with ssh), lcd use display.
RE: PDU recommendations
We're replacing TrippLite with APC. Had two TrippLite SNMP/Web cards stop working at random times, and need to be reset. Pain when the datacenter is far away. On a different note TrippLite support has been super awesome. The APC line we went with, model # escaping me at the moment, only had overall unit AMP load indicator. But their SNMP access is nice, for custom graphs in Cacti etc, and being able to remote bounce an outlet. We did have a few WTI, the really old ones, which did not store the config in flash, thus needed to be reconfigured via serial after power outage. Even with that annoyance, they had much faster response time from telnet (I know, old) turning on/off outlets than either of APC or TrippLite. -Petter From: trit...@cox.net [trit...@cox.net] Sent: Sunday, June 23, 2013 12:05 PM To: shawn wilson; North American Network Operators Group Subject: Re: PDU recommendations APC is solid. Their newer line can provide outlet metering. WTI is also good...they support redundant circuits. I've seen Baytech died after just unplugging a server. --Original Message-- From: shawn wilson To: North American Network Operators Group Subject: PDU recommendations Sent: Jun 23, 2013 8:37 AM We currently use Triplite stuff but they've got an issue where after a few minutes, they stop accepting new tcp connections. We're adding a new 30A circuit and I'm thinking of going with APC (ran them in the past and never had any issues). However, I figured I'd see if there was a better brand / specific model recommendations for quality or bang / buck? Specs: 30A 24+ port 0U, managed (with ssh), lcd use display.
RE: PDU recommendations
Thanks, I think the amount of love for the APC stuff confirmed my experience. I'll look at the Raritan PDUs as I like their KVMs but if I have to use their software or a WebUI to manage it (I use AddleLink for remote to the KVM because I don't like proprietary management) I won't use their PDU. AFAIK (I'll obviously confirm), the circuit is 208VAC and the plug is the dual phase NMEA type. On Jun 23, 2013 3:41 PM, Petter Bruland petter.brul...@allegiantair.com wrote: We're replacing TrippLite with APC. Had two TrippLite SNMP/Web cards stop working at random times, and need to be reset. Pain when the datacenter is far away. On a different note TrippLite support has been super awesome. The APC line we went with, model # escaping me at the moment, only had overall unit AMP load indicator. But their SNMP access is nice, for custom graphs in Cacti etc, and being able to remote bounce an outlet. We did have a few WTI, the really old ones, which did not store the config in flash, thus needed to be reconfigured via serial after power outage. Even with that annoyance, they had much faster response time from telnet (I know, old) turning on/off outlets than either of APC or TrippLite. -Petter From: trit...@cox.net [trit...@cox.net] Sent: Sunday, June 23, 2013 12:05 PM To: shawn wilson; North American Network Operators Group Subject: Re: PDU recommendations APC is solid. Their newer line can provide outlet metering. WTI is also good...they support redundant circuits. I've seen Baytech died after just unplugging a server. --Original Message-- From: shawn wilson To: North American Network Operators Group Subject: PDU recommendations Sent: Jun 23, 2013 8:37 AM We currently use Triplite stuff but they've got an issue where after a few minutes, they stop accepting new tcp connections. We're adding a new 30A circuit and I'm thinking of going with APC (ran them in the past and never had any issues). However, I figured I'd see if there was a better brand / specific model recommendations for quality or bang / buck? Specs: 30A 24+ port 0U, managed (with ssh), lcd use display.
RE: PDU recommendations
Been at a place where they have hundreds of APC's in production, all monitored and reporting back. Hardly a lick of trouble. Love the fact you can reboot the management interface in the rare case there is a hang and it does not affect the status of the outlets. -ChrisD. -Original Message- From: shawn wilson [mailto:ag4ve...@gmail.com] Sent: Sunday, June 23, 2013 10:38 AM To: North American Network Operators Group Subject: PDU recommendations We currently use Triplite stuff but they've got an issue where after a few minutes, they stop accepting new tcp connections. We're adding a new 30A circuit and I'm thinking of going with APC (ran them in the past and never had any issues). However, I figured I'd see if there was a better brand / specific model recommendations for quality or bang / buck? Specs: 30A 24+ port 0U, managed (with ssh), lcd use display.
Re: PDU recommendations
And now for the stupid question. Is there an APC UPS in a U form factor with sufficient outlets that can act kind of like a PDU, only better? PS If it has stonith capabilities ever better!!! Kind Regards, Nick.
RE: PDU recommendations
I'll also throw out recommendations for ServTech PDUs. They have an affordable line of PDUs with static transfer switches that are particularly attractive for all your single-power-supply devices. Chris Dunn chrisdu...@gmail.com wrote: Been at a place where they have hundreds of APC's in production, all monitored and reporting back. Hardly a lick of trouble. Love the fact you can reboot the management interface in the rare case there is a hang and it does not affect the status of the outlets. -ChrisD. -Original Message- From: shawn wilson [mailto:ag4ve...@gmail.com] Sent: Sunday, June 23, 2013 10:38 AM To: North American Network Operators Group Subject: PDU recommendations We currently use Triplite stuff but they've got an issue where after a few minutes, they stop accepting new tcp connections. We're adding a new 30A circuit and I'm thinking of going with APC (ran them in the past and never had any issues). However, I figured I'd see if there was a better brand / specific model recommendations for quality or bang / buck? Specs: 30A 24+ port 0U, managed (with ssh), lcd use display.
Re: PDU recommendations
Nick, he meant he was using APC PDUs, not APC UPSs with PDU functionality... APC is also the PDU vendor I would recommend. On Sun, Jun 23, 2013 at 6:40 PM, Nick Khamis sym...@gmail.com wrote: And now for the stupid question. Is there an APC UPS in a U form factor with sufficient outlets that can act kind of like a PDU, only better? PS If it has stonith capabilities ever better!!! Kind Regards, Nick.
Re: PDU recommendations
I used an APC (I think) 1U PDU at a client a few years back. The bugger was it wasn't deep, so after the cabinet started getting really populated, the back outlets were a PITA. We started using the full-height back of the cabinet PDU strips (one on each side for A B power respectively) after that SNAFU. -T On Jun 23, 2013, at 7:27 PM, Blake Dunlap iki...@gmail.com wrote: Nick, he meant he was using APC PDUs, not APC UPSs with PDU functionality... APC is also the PDU vendor I would recommend. On Sun, Jun 23, 2013 at 6:40 PM, Nick Khamis sym...@gmail.com wrote: And now for the stupid question. Is there an APC UPS in a U form factor with sufficient outlets that can act kind of like a PDU, only better? PS If it has stonith capabilities ever better!!! Kind Regards, Nick. This email message and any attachments are for the sole use of the intended recipient(s) and contain confidential and/or privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message and any attachments.
Re: PDU recommendations
Eaton have 1U UPS that provide the same runtime as a 2U APC. Are they any good? --Original Message-- From: Nick Khamis To: Chris Dunn Cc: North American Network Operators Group Subject: Re: PDU recommendations Sent: Jun 23, 2013 4:40 PM And now for the stupid question. Is there an APC UPS in a U form factor with sufficient outlets that can act kind of like a PDU, only better? PS If it has stonith capabilities ever better!!! Kind Regards, Nick.
Re: PDU recommendations
I also have had good experience with (used) servertech/century/power tower (I think all the same brand) - very inexpensive; if you are in santa clara I have some spare 2u 16 port 208v (20a/c19) units. Here is something a buddy wrote up when we were wiring them to the user-accessable power on/off menu: http://blog.prgmr.com/xenophobia/2012/02/notes-on-setting-up-a-sentry-p.html My new rack is all avocent PM3001-401 units.Used, of course; but the feature I was after was per-port power monitoring. I haven't quite gotten 'em all the way figured out yet. One thing I see as a negative (but might be positive?) is that they have fuses, not breakers.I don't know if this provides better protection; I do know that when my buddy overloaded one of them in testing, I had to replace fuses, rather than just switching a breaker back. (also, when a different buddy plugged a ancient desktop (so old the PSU wasn't auto-switch) with the power input switch set to 110 in, it blew some of the fuses in the PDU (and took out the rack) - it didn't damage any of the other servers on the pdu (other than taking out the PDU; but everything came back up when I swapped it with my spare.) Also note, uh, the servertech and the avocent and I think all the other PDUs I've seen can reboot the management interface without flipping the outlets. I did it a bunch when I was getting familiar with the avocent. Yeah. I think I need to give fewer buddies access to production. Nobody takes hardware seriously enough. I can find people I trust with root, and that trust doesn't seem misplaced.But I let them touch the hardware? and they fuck it up.So I end up doing almost all the hardware stuff myself. On 06/23/2013 04:48 PM, Trey Valenta wrote: I'll also throw out recommendations for ServTech PDUs. They have an affordable line of PDUs with static transfer switches that are particularly attractive for all your single-power-supply devices.
RE: PDU recommendations
We have switched to Chatsworth products PDU line - robust and dependable in over 100 redundant installs - all outlet/environmental/SNMP and other options well behaved with plug-ins as well tech support is easier to access/escalate Bill -Original Message- From: Petter Bruland [mailto:petter.brul...@allegiantair.com] Sent: Sunday, June 23, 2013 3:42 PM To: trit...@cox.net; shawn wilson; North American Network Operators Group Subject: RE: PDU recommendations We're replacing TrippLite with APC. Had two TrippLite SNMP/Web cards stop working at random times, and need to be reset. Pain when the datacenter is far away. On a different note TrippLite support has been super awesome. The APC line we went with, model # escaping me at the moment, only had overall unit AMP load indicator. But their SNMP access is nice, for custom graphs in Cacti etc, and being able to remote bounce an outlet. We did have a few WTI, the really old ones, which did not store the config in flash, thus needed to be reconfigured via serial after power outage. Even with that annoyance, they had much faster response time from telnet (I know, old) turning on/off outlets than either of APC or TrippLite. -Petter From: trit...@cox.net [trit...@cox.net] Sent: Sunday, June 23, 2013 12:05 PM To: shawn wilson; North American Network Operators Group Subject: Re: PDU recommendations APC is solid. Their newer line can provide outlet metering. WTI is also good...they support redundant circuits. I've seen Baytech died after just unplugging a server. --Original Message-- From: shawn wilson To: North American Network Operators Group Subject: PDU recommendations Sent: Jun 23, 2013 8:37 AM We currently use Triplite stuff but they've got an issue where after a few minutes, they stop accepting new tcp connections. We're adding a new 30A circuit and I'm thinking of going with APC (ran them in the past and never had any issues). However, I figured I'd see if there was a better brand / specific model recommendations for quality or bang / buck? Specs: 30A 24+ port 0U, managed (with ssh), lcd use display.
Re: PDU recommendations
So, that's not a very good endorsement :) Idk why you'd use a fuse in a PDU. The management interface can be rebooted without taking anything down on the TrippLite but it's at a colo and it *shouldn't* time out like it does. I think of this like a vehicle computer - if it goes down, you might still drive for a little but get ready for a crash. On Jun 23, 2013 9:00 PM, Luke S. Crawford l...@prgmr.com wrote: I also have had good experience with (used) servertech/century/power tower (I think all the same brand) - very inexpensive; if you are in santa clara I have some spare 2u 16 port 208v (20a/c19) units. Here is something a buddy wrote up when we were wiring them to the user-accessable power on/off menu: http://blog.prgmr.com/**xenophobia/2012/02/notes-on-** setting-up-a-sentry-p.htmlhttp://blog.prgmr.com/xenophobia/2012/02/notes-on-setting-up-a-sentry-p.html My new rack is all avocent PM3001-401 units.Used, of course; but the feature I was after was per-port power monitoring. I haven't quite gotten 'em all the way figured out yet. One thing I see as a negative (but might be positive?) is that they have fuses, not breakers.I don't know if this provides better protection; I do know that when my buddy overloaded one of them in testing, I had to replace fuses, rather than just switching a breaker back. (also, when a different buddy plugged a ancient desktop (so old the PSU wasn't auto-switch) with the power input switch set to 110 in, it blew some of the fuses in the PDU (and took out the rack) - it didn't damage any of the other servers on the pdu (other than taking out the PDU; but everything came back up when I swapped it with my spare.) Also note, uh, the servertech and the avocent and I think all the other PDUs I've seen can reboot the management interface without flipping the outlets. I did it a bunch when I was getting familiar with the avocent. Yeah. I think I need to give fewer buddies access to production. Nobody takes hardware seriously enough. I can find people I trust with root, and that trust doesn't seem misplaced.But I let them touch the hardware? and they fuck it up.So I end up doing almost all the hardware stuff myself. On 06/23/2013 04:48 PM, Trey Valenta wrote: I'll also throw out recommendations for ServTech PDUs. They have an affordable line of PDUs with static transfer switches that are particularly attractive for all your single-power-supply devices.
