Re: [lopsa-tech] Cable management arms

2013-04-10 Thread Edmund White
Summarized cleanly on ServerFault: http://serverfault.com/a/429563/13325 * I still use cable management arm on servers that have hot-swap RAM, PCI, etc. inside the chassis. This is rare today. * Storage servers/enclosures like the Sun x4540,

Re: [lopsa-tech] Cable management arms

2013-04-10 Thread Matt Lawrence
On Wed, 10 Apr 2013, Michael Ryder wrote: I think it very much depends on: - how many "a bunch" is (2) power cords, (3) Cat 6, (2) 10Gbit Force 10, (1) Avocent KVM - what your wiring looks like This is starting in an empty rack - how you manage airflow in your rack(s) Ummm, not so wel

Re: [lopsa-tech] Cable management arms

2013-04-10 Thread Jon Dustin
>>> On 4/10/2013 at 11:10 AM, in message , Matt Lawrence wrote: > We just received a bunch of 1U servers with cable managment arms (customer > ordered the arms) and I though I would appeal to the collective wisdom of > LOPSA. It has been years since I have used cable managment arms and even >

Re: [lopsa-tech] Cable management arms

2013-04-10 Thread Doug Hughes
Several have alluded to this, and I think this is what it comes down to.. Is it a storage server where it's somewhat highly available and you want to be able to change the fans or insert a new SAS/10g/whatever card or DIMM stick or whatever without having to remove it from the rack? That leans towa

Re: [lopsa-tech] Cable management arms

2013-04-10 Thread John Stoffel
Another vote no on cable arms, esp for 1U servers. I found the biggest hassle was if I needed to hot-swap cables, then I either needed to pre-run the new cable, slide the sucker all the way out, plug in new ones, etc. And the airflow issue is also a big one. Even though my racks with lots of

Re: [lopsa-tech] Cable management arms

2013-04-10 Thread Matt Simmons
I can count the number of times I've wanted to open the case on a running server to hotswap a part on zero hands. The idea behind them was sound back when you had 4+u snowflake machines that weren't clustered, and you couldn't afford to take your standalone mail server down to replace a bad stick

Re: [lopsa-tech] Cable management arms

2013-04-10 Thread Derek Monaghan
Some reasons I stopped using them (all Dell/Sun): - No real apparent advantages - Make it difficult to access the rear of a server once they are racked - Pain to install/remove/move cabling - Capture heat/impede airflow I'm actually surprised they're still being sold and used. If you do not have

Re: [lopsa-tech] Cable management arms

2013-04-10 Thread Brodie, Kent
For several years, I insisted on cable arms. But after our racks got more packed etc, I discovered that, for ME, they were more hassle than they're worth. Cable management arms are great when you have to pull a server out while it's still connected or on.But in reality, how many times do

Re: [lopsa-tech] Cable management arms

2013-04-10 Thread Jeff Wasilko
On Wed, Apr 10, 2013 at 10:10:51AM -0500, Matt Lawrence wrote: > We just received a bunch of 1U servers with cable managment arms (customer > ordered the arms) and I though I would appeal to the collective wisdom of > LOPSA. It has been years since I have used cable managment arms and even > th

Re: [lopsa-tech] Cable management arms

2013-04-10 Thread Gary Pitman
Personally, I would prefer to not use them as I think the disadvantages outweigh the advantages. Any thoughts pro or con? I am with you on this one. The only time I feel they are useful is when you have to pull a machine out extending the rails and you need it to stay plugged in. Seems to be

Re: [lopsa-tech] Cable management arms

2013-04-10 Thread Michael Ryder
I think it very much depends on: - how many "a bunch" is - what your wiring looks like - how you manage airflow in your rack(s) - what the management arms look like My experience has been with the arms from HP, and I stopped buying them about 10 years ago after I realized that after they were loa

[lopsa-tech] Cable management arms

2013-04-10 Thread Matt Lawrence
We just received a bunch of 1U servers with cable managment arms (customer ordered the arms) and I though I would appeal to the collective wisdom of LOPSA. It has been years since I have used cable managment arms and even then, they were on much larger systems. These are a bunch of 1U servers