- **** **** **** ***** ***** are ********* **** *** ******** larger ********* **** ** NVR/VMS *******, ********, *** large ***. **** ******* a ***** ***** ***** to ** ****** **, and * ***** ***** structure ** ** ******** to.
- *** **** ***** *** be ******** *** **** cable ***** ******, ***** terminations ** *********/******* *********. **** are *** ******** ** hold **** **** ***** devices, **** ** *** servers, *** ******* * much ******* ***** ***** but ***** **** ** be ******** ******** ** the *****.
- **** ***** ***** *** typically **** *** ***** patch ******, ***** ************. They *** ********* ******* to **-****** ******* **** and **** **** - 20in ****, ** ***** servers, ******** ** *** equipment *** *** *********** for ************ ** **** Mount *****.
- ******** **** ***** ***** *** ****** traditional ***** ** **** hardware ***** **** **** the **** *****, ******** larger ******** *** ******** small ******* ** ** wall ******* ** * more ******* *****.
Enclosed ******* *****
******** ******* ***** ******* physical ******** ** ******* server *** ****** *****, and ***** *** *********** intake *** ******* *** for *********** **** ********* operation ** ****-******* ********. ** with **** ***** ******, cabinets **** ** ******* different *****:
- **** **** ***** ******** provide **** ** *** same ************* ** ** open * **** ****, but *** ** ****** secured **** ******* ***** and ***** *** *** ability ** ******* *** ventilation *** *** **** in *** *** ** the *******.
- ****** ****** **** ***** cabinets *** ********* * compact *** ** ******** smaller ******* ********* (*-** port ********, ***** ******, small ***) ** * smaller **** ******* ***** up *** ***** **** estate. **** *** **** be ******, *** ******** have ******* *** ******** ** the ******* ** *** wall ** ***** *** ceiling. ***** ** ** way ** ****** *** rear ** *** ******** or ***** ****** ** a ****** ****** *******.
- ****** ****** **** ***** cabinets *** ********* ****** than ****** ****** ****** *** offer ****** ** *** back ** *** ********* in *** **** ******* having ** ****** ** from *** *******. **** makes *********** ***** ****** or ******** *** ******** much ******.
- ******** **** ***** ********, are ** ******** ******* of *** ******** ***** open ****, **** ******** larger ******** *** ******* to ** **** ******* in * **** ******* space (**"-**" ** *******), and ********* ******** ** a ******** *******. **** are ***** *** ***** max ****** ** *******.
Full ***** ** ****** *****
*** ***** ******** ** any **** ****** ** the ***** ** *** enclosure. ***** ************ ************ ***** ********** ***** * **** racks ******* **** **" to **". *** ******* rack ***** *** ******** servers ** **", ***** on *** ****** ** Dell [**** ** ****** available],***, ********.
******* ***** ** ** true ******** *** "****** depth", ***** *** *** common ****** ***** ****** watch *** ***:
- ******* "****** *****" *****: ******* ******* ********* ****** to **", **** ************* advertise **" **** ***** as "****** *****."
- **** ***** ******* *******:******* *** ****** ***** wall ***** ***** *** limited. ***** ******** ********* may ****** *** ** wall ***** ******, **** size *** ******* ****** require * ***** ***** rack *** ** ***** depth.
Physical ******** ***********
******* ******** *********** **** changed *** *** ** departments **** ** **** at ******** ********. **** regulations (*****, ***-***) ***'* currently ******* *******-***** ******** control, **** ***** ****** control (**** ******-*** *.* ******** *********):
*.* - ***** ****** to ****** ********** *** cardholder **** ** **** those *********** ***** *** requires **** ******
*.* - ********* ** access ******* ******(*) *** systems ********** **** ********* access ***** ** * user’sneed ** ****, *** is *** ** “**** all” ****** ************ *******.
****** **** *************, *** ******** ******** specific ************ *** ****** to ********.
Cabinet ********
******* ******* ******** ********** varies. **** ** *** technologies ** ***** ***:
- *********** **** *** *****
- ********** ****** *******
- *** ******/**** *********
******* ******** *** ***** ******* with ***** ******** ***** and/or ***** ******* **** simple **** *** **** to ******. ************, **** racks **** **** ********* side ****** ** **** doors **** *** ******* with ******** *****.
********** ****** ******* ******* are ********* *** ******* cabinet *******, **** *********** swing ****** ***** *** cylindrical *********** ******** ***** from***,*******,*******, *** ******. **** of ***** **** ********** Wiegand **** ******* ******** on *** **** ****.
* *** ****** ** a */**" ****** ****** that ** * **** ************ **** to **** *********/**** ************ terminals (****). *******, **** cabinets *** **** **** fastener, ** ****, ** close *** *** ** the ******* (******** ** addition ** * *******).
Open ***** ********
** ******, **** ***** racks *** **** ****** than ********, ** *******, power, *** ******** *** exposed ******* ** ****** in ** *********. ******* of ****, **** ***** racks *** ********* **** only ** ****** ***** such ** ****** *****.
***** *** **** ** lock **** **** *********** in **** ***** ***** from ****** *********, **** as ******** ****** ***** mount **** *** ***** of ********* (*****). *** determined ********* **** **** other *** ** ********** or ******* *********.
Switch **** ********
** ******** ** **** security, ***** ******* **** ***** ****** or ***** ***** *** switch *****. **** ******* *** * combination ** ** ****** and ***** ***** ********* lock, **** * ******* key.
**** ** *** ************* that ***** ******* ******* are:
Rack ******
***** *** ** *** standards *** ***** **** piece ** ********* ** mounted ** * ****, as **** ************ *** equipment ******** ******, *** there * *** ******* guidelines ** ********:
- ***** *** ********* *** heaviest ******** ****** ** any **** *** ****** be ******* ** *** bottom ** *** **** for *********.
- ***** ***** ****** *** ***** ******** cable *********** *** **** often ******* ** *** top ** *** ****, since **** *** ******** much **** ********** **** station/device ******* *** ********.
- ** * ***/******* *** used, **** ****** ** placed ** ******* ******, generally **-**" ** ** not ** ** *** high/low ** *********** ***.
*** ****** ** *** rack ***** ** **** most, ** ******* **** as ****** *** ***** panel *******, ****** ******** and ****, *** ***** devices ****** ******.
Cable **********
***** ********** ****** *** rack ** ** ******** as *** ***** *** in ******** ** ***** the *******. ** ** where *** **** *******, troubleshooting, *** ********* **** be ****. ******** ******* cable *** ******** *** also * ***** ********* of * ********** ******* with **** *** ****** technique.
***** *** *** ****** approaches ** ******** ******/***** panel ******:
- ***** ****** *** ******** grouped:** **** ********, ***** panels *** ******* ******** to **** *****, ** our ********, *** ****** patch ****** **** ** connect ***** ****** ** switches. **** ******** ***** it ****** ** *** future ***** ****** ** switches, *** ****** **** be ****** *** *** more ********* ** *****.
- ***** ****** ******* **** to ********:** **** ********, ***** panels *** ******** *** grouped ********, **** ******* patch ****** **** ** connect *** ***. **** method ******* *** **** for ********** ***** ********, since **** *** *****. However, ** ** **** flexible *** ****** ***** because **** ****** ***** may *** ** ******* adjacent ** ***** **** added ***** *** ******* installation.
Enclosure ***********
******* ********* ******* ****** is **** ********* **** considering **** **** ** enclosure, *** **** *********** control ** *** *******.
- **** **** ***** ** *** provide *** *** ** containing *** ********* *** exhaust *** **** **** the ****** ****** *** and *********** ******* *** air **** **** *** room, ***** **** ** climate **********.
- ******** **** ** ***** mount ******* ******* *** be **** **********, **** many ********* ***** **** for **** ** *** top ***/** ****** ***** allow *** ** ** vented **** ****** ****** or **** *****.
Equipment *********** *****
**** ******* ** ****** manufacturer *** **** ********* specifications *** ****** *** exhaust ** ***** *********. They **** ***** *** "front **** ** **** side" ** "**** **** exhaust ** **** **** intake".
** ***** ************, "*****" means *** **** ** the ****** **** **** and ***** **********, ***** "back" ***** *** **** with *** ******* ***** - ******** ***** ****** fans *** **** ********* but *** ** ******* with ***** (** ***** connectors ****) *******.
**** ****** ************* *** rear *******, ** **** they ******* *** *** where *** ***** *** network *********** ***, *** intake ** *** ***** and *****.
Passive **. ****** *******
***** *** *** ***** of ******* **** ** rack ************:
- ******* ******* ***** ******* on ******* *** **** from *** ******* ** the ******* *** ******** to ***** **** *** to **** **** *** cabinet.
- ****** ******* ***** ***** exhaust *** ** **** to ****** *** *** air **** *** **** area, ******** *** ****** of **** *** ** happen **** ***********, ******* equipment ******.
******* ******* ** **** common ** ***** **** closets ** ***-**** ****** environments, ********** * *** switches ** ******** ********* which ********* ** *** produce ******* ****. *** conditioning ***** **** *** into *** **** ******* either ********* **** ** building **** *** **** to **** *** ****** room ****. **** ** inefficient, *** *** ******* investment ****** ** **** network ********* **** *** functioning.
*** ****** ** ****** cooling ** *** ***** and **** ***** ***********, a ******* ******** ** modern **** ******* *** isolating *** **** ****** air **** *** *** exhaust ***, ** ******** the ******* ******* ********* ducting/chimneys *** * ****** ceiling *****. **** ******** a ********* ******* **** and * ****** ***** plenum ******.
*** ***** ******** ** any ******* **** ***** to ** **** ** the *** ***** ** the **** ** *** racks, **** ** **** in **** *** ******* conditions, ***** ** ******* F. ** **** ******** more ***** *** *** exhaust ******, *** ** a *** ** * server ** ****** *****, it **** ***** *** more **** ** ******* the ***, ** **** down *** *********, ****** catastrophic *********** ***** *****.
Other **** ***********
***** **** ******* ********* such ** ********, *********, servers, *** ***** ******, there *** ******* ****** rack ***********:
*** ********
**** **** ************* **** have ******** ******* ****** the **** **** ** grouping ** *****. ** place ** ******** ********, keyboards *** **** *** control *** ******* ** each ******, * *** (Keyboard/Video/Mouse) ****** ****** *** control ** ******** ******* from * ******* *****. The **** ****** **** is * ***** *** rack **** **** ******* monitor, *** *** **** be * ********** ****** with ******** *******, ***** and ********.
**** *******
**** ******* *** ***** used ** **** ********* which ** *** ******** intended ** **** *****, such ** ***** ******/*******, small *********, ** ******* PCs.
*******
**** ******* *** ******** used ** ***** ******, manuals, *****, ** ***** materials ***** *** ** frequently ******. ******* ***** from **-**, *********, *** up ** ~**" *****.
******
*******, **** ***** ****** may ** **** ** illuminate ******* ***** ** the *****/**** ** *****. This *** ** ********** useful *** ********* *** rear ** ******** ********, as ******* ***** ** the **** *** *** reach ***** *****.
Comments (14)
Dan Bilodeau
Thank you for making this. Another definitive example of the little tools I need and look for as an active participant in this industry. Security folks are equivalent to the veterinarians of all the trades; a horse, a pig, a chicken - all in the same day!
Thanks for helping us stay skilled when putting all the pieces together.
Create New Topic
Campbell Chang
No mention of a rack KVM switch.
Create New Topic
Frank Farmilette
I love the active cooling diagram.
Create New Topic
Tony Karian
I'd be interested in any info on rack use in earthquake prone areas.
Create New Topic
Undisclosed End User #1
The active cooling diagram seem the rack back/front direction should be opposite. The server chassis front is sucking air and air come out from the back.
Create New Topic
Fahd Abbas
Interesting. I believe grounding the rack is required to safeguard the equipment's.
Create New Topic
Undisclosed
Nice article.
"zone 4" appears to mean "near an active earthquake fault", as in this. So I guess you always see racks bolted to the floor or structure.
You don't mention bend radius rules, or fiber optic cable, or wiring run rules for wiegand/rs485 cable.
(do not mash the cables. there's actually a "bend radius" rule, probably in a BICSI spec. And while cat 5 for data wants to be neat and parallel, wiegand and rs485 do better (some say) by being run back and forth diagonally in cable trays.)
Create New Topic
Ty Sagiao
I likely won't ever be involved in any type of enterprise level work, but this is still extremely nice-to-know information. Thanks!
Create New Topic
Abaas Mahroos
IPVMU Certified | 03/03/19 01:27pm
I think it's important to note as well the door. It can be either glass or metal. Metal doors are usually meshed thus offering better ventilation. But glass doors are more convenient when troubleshooting, all device statuses/cabling is easily visible without opening the door.
Create New Topic
Tan Tharp
We have ran into Rack Units advertised as "server sized", where the depth came in an inch or two short of the DVR, Switch, and keyboard trays. It is always frustrating having to renovate and update the structure of the rack units in last-minute attempts to make the enclosures work.
Create New Topic