Compatibility |
| Q1. |
Can the MCS G2 be retrofitted to an existing populated rack? |
| A1. |
No, the MCS G2 can only be purchased already attached to an empty HP 10642 rack. |
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| Q2. |
Can the MCS G2 be shipped with servers installed (CTO)? |
| A2. |
Yes, the MCS G2 supports CTO for both the MCS G2 and the Expansion Rack.
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| Q3. |
Is the MCS G2 sold only with a 42U rack? |
| A3. |
Yes, the MCS unit is attached to a standard 10642 G2 rack, no other rack size can be used.
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| Q4. |
What are the hot swappable components? |
| A4. |
The MCS is equipped with hot swappable fans.
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| Q5. |
Does the MCS G2 use an "off the shelf" 10000 G2 rack? |
| A5. |
Yes, the MCS uses a standard 10000 Series G2 rack to start, then a front extension is added for the air plenum, then bottom and top plates to prevent air from escaping from these openings are also added.
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Site preparation |
| Q1. |
Where can I find information on site preparation? |
| A1. |
In the Support & Documents section you will find the Site Preparation Guide for the MCS G2 as well as other important documentation |
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| Q2. |
Are there water quality specifications? |
| A2. |
Yes, you will find detailed explanations of water quality requirement in the Site Preparation guide.
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| Q3. |
Is a secondary pump required to increase the water pressure? |
| A3. |
It depends on the pressure provided by the main chilled water supply as well as the heat load. Refer to the Site Preparation guide for information on this topic. |
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| Q4. |
Is a secondary loop recommended? |
| A4. |
Secondary loops ensure water quality is met. Other reasons to have secondary loops are to control water pressure and temperature. |
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| Q5. |
Does HP sell water chillers to use with the MCS G2? |
| A5. |
No, HP does not sell water chillers. Please contact your facilities manager for information on procuring this. |
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Installation |
| Q1. |
Who will install the MCS G2 in my datacenter? |
| A1. |
The customer may install the MCS on their own if desired, if not, HP offers optional installation services for the MCS. In addition, HP offers datacenter assessment services, see MCS QuickSpecs for additional information. |
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| Q2. |
Will my existing chilled water cause any long term harm or lower performance? |
| A2. |
If the existing chilled water does not meet the water quality criteria set in the Site Preparation Guide, a secondary loop is recommended. Contaminated chilled water may cause damage to the heat exchangers. |
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| Q3. |
How much water do I need? |
| A3. |
For a full load of 35KW, 20 GPM of chilled water are needed. Consult the Site Preparation guide for additional information on water supply for the MCS. |
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| Q4. |
What incoming cold water temperature is best? |
| A4. |
This will depend on the heat load, but as a general rule, incoming chilled water should be from 5C to 10C. Consult the Site Preparation guide for additional information on water temperature for the MCS G2. |
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Operation |
| Q1. |
What happens if condensation occurs? |
| A1. |
DMCS G2 operates above the dew point so no condensation should occur inside the MCS G2. However, condensation mesh screens are placed to strip the airflow from any condensation. |
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| Q2. |
Can water ever reach the servers? |
| A2. |
No, the servers and cooling water are in separate compartments and never interact. |
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| Q3. |
What is the minimum rack load in KW to be cooled? |
| A3. |
There is no minimum, but as a general rule, conventional cooling peaks at about 10KW depending on the datacenter, therefore you should consider using the MCS if you are at or above that level. |
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| Q4. |
How does the MCS G2 interact with SIM? |
| A4. |
Via SNMP traps. |
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| Q5. |
What water pressure is needed? |
| A5. |
It may vary according to the heat load, but as a general rule, 25 psi. |
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Other |
| Q1. |
Are there any issues when operating with the front or back rack doors open? |
| A1. |
If the back doors are left open, the heat load generated by the servers willl be expelled into the datacenter. If the front door of the MCS is kept open, some chilled air may escape into the environment potentially affecting the operation of the MCS. |
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| Q2. |
What is the increase or decrease in noise level when using an MCS? |
| A2. |
There will be a significant decrease in noise level generated from the servers and/or blades systems once the front and back doors are closed. |
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| Q3. |
Do I need to provide a filter in the water supply? |
| A3. |
Yes, a filter is needed to keep the chilled water impurities out. |
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