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SMSR: mailing list

There's a mailing list called selfmanaged-sr. You should subscribe to it if you have manage or use a machine in any of our self-managed server rooms.

It's low volume, with occasional announcements and followup discussion.

More info

Find out more about the self-managed server rooms:

SMSR: removing machines

If you remove machines from a self-managed server room - even temporarily - please tell computing support. It helps us to track what's going on, and plan accordingly.

Capacity in the self-managed server rooms is limited, and we monitor the overall usage.

If a machine is removed without telling us, we may reuse the space previously allocated to it.

SMSR: emergencies

Occasionally we have to turn off machines at short notice. There are a few reasons why we might need to do this. One is power failure (when the machines will only have a few minutes in which to shut down cleanly before the UPS batteries are exhausted) and another is cooling failure (when they will be making the room dangerously hot). In addition, the basement occasionally has problems with plumbing.

SMSR: safety

Food and drink

Food and drink are not allowed in the School's server rooms.

Booking your visit

Any time you need to enter the rooms, our safety rules state that you MUST book a time slot for your visit. To do this, contact User Support to ask for your preferred time (and room!) and check that your visit doesn't conflict with anyone else's.

SMSR: getting in

Access is normally granted freely to those who have machines in the rooms, but not to anyone else.

Any time you need to enter the rooms, our safety rules state that you MUST book a time slot for your visit. To do this, contact User Support to ask for your preferred time (and room!) and check that your visit doesn't conflict with anyone else's.

SMSR: remote admin

Your machine will likely be equipped with a Baseboard Management Controller (BMC) (which might be referred to by the manufacturer as a 'Lights Out Management processor' (LOM), or a 'Dell Remote Access Controller' (DRAC), etc.) This allows remote system administration of the machine, a remote console via IPMI, and so on.

There's a dedicated subnet and VLAN for these devices. To use it, please contact support.

SMSR: power

Power is distributed by the 'power bars' attached to the rear of each rack, which present as IEC C13 and C19 outlets. Most machines will be connected to C13 outlets on the power bars and, when your machine is installed, the support team will supply the appropriate IEC C14-C13 power cables.

SMSR: networks

There are four network switches in room B.Z14, and one in room B.01, each providing 44 1000baseT ('Gigabit ethernet') ports. Ports on each of these switches can be configured onto any of the public or private VLANs available in the building. Each of these five switches has a 10Gbps uplink to the network core.

A port in one of the switches will be configured for your machine on installation. Switch ports are not interchangeable: you must not re-patch your machine to any other switch port. Please, never rearrange, add or remove any network connections.

SMSR: racks

All machines must be rack-mountable; no desktop-style machines will be accepted.

In order to make the best use of the available space, we aim to rack machines fairly densely - unless there is a good reason not to.

SMSR: asking for space

Rack space, power, and available cooling in the self-managed server rooms are all limited. The SRRG (Server Room Resource Group) oversees the allocation of space in all of the School's server rooms. Before you make plans to site equipment in either room, you must submit a Server Room Request Form explaining what equipment you propose to install, how much rack space you'll need, and how much power your equipment can be expected to draw. If the request is reasonable, the SRRG will reserve the space, subject to the School's SMSR space policy.

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