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83 lines
3.1 KiB
Markdown
83 lines
3.1 KiB
Markdown
# Racks
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The rack model represents a physical two- or four-post equipment rack in which [devices](./device.md) can be installed. Each rack must be assigned to a [site](./site.md), and may optionally be assigned to a [location](./location.md) within that site. Racks can also be organized by user-defined functional roles. The name and facility ID of each rack within a location must be unique.
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Rack height is measured in *rack units* (U); racks are commonly between 42U and 48U tall, but NetBox allows you to define racks of arbitrary height. A toggle is provided to indicate whether rack units are in ascending (from the ground up) or descending order.
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Each rack is assigned a name and (optionally) a separate facility ID. This is helpful when leasing space in a data center your organization does not own: The facility will often assign a seemingly arbitrary ID to a rack (for example, "M204.313") whereas internally you refer to is simply as "R113." A unique serial number and asset tag may also be associated with each rack.
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## Fields
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### Site
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The [site](./site.md) to which the rack is assigned.
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### Location
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The [location](./location.md) within a site where the rack has been installed (optional).
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### Name
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The rack's name or identifier. Must be unique to the rack's location, if assigned.
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### Status
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Operational status.
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!!! tip
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Additional statuses may be defined by setting `Rack.status` under the [`FIELD_CHOICES`](../../configuration/data-validation.md#field_choices) configuration parameter.
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### Role
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The functional [role](./rackrole.md) fulfilled by the rack.
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### Facility ID
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An alternative identifier assigned to the rack e.g. by the facility operator. This is helpful for tracking datacenter rack designations in a colocation facility.
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### Serial Number
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The unique physical serial number assigned to this rack.
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### Asset Tag
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A unique, locally-administered label used to identify hardware resources.
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### Type
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A rack can be designated as one of the following types:
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* 2-post frame
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* 4-post frame
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* 4-post cabinet
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* Wall-mounted frame
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* Wall-mounted cabinet
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### Width
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The canonical distance between the two vertical rails on a face. (This is typically 19 inches, however other standard widths exist.)
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### Height
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The height of the rack, measured in units.
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### Outer Dimensions
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The external width and depth of the rack can be tracked to aid in floorplan calculations. These measurements must be designated in either millimeters or inches.
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### Mounting Depth
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The maximum depth of a mounted device that the rack can accommodate, in millimeters. For four-post frames or cabinets, this is the horizontal distance between the front and rear vertical rails. (Note that this measurement does _not_ include space between the rails and the cabinet doors.)
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### Weight
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The numeric weight of the rack, including a unit designation (e.g. 10 kilograms or 20 pounds).
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### Maximum Weight
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The maximum total weight capacity for all installed devices, inclusive of the rack itself.
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### Descending Units
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If selected, the rack's elevation will display unit 1 at the top of the rack. (Most racks use ascending numbering, with unit 1 assigned to the bottommost position.)
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