# GCC Tape Library Room Impact

# General

Room lighting and other working environment power.

# Library

The table below lists the approximate Physical dimensions of the
libraries being considered. Space for at least 4 tape libraries should
be provided. In FY06 and FY07 2 tape libraries will be acquired: a
general purpose library and a CMS library. Minimum footprint to consider
for this acquisition should be the two largest of these, the (boxed)
AML-2 (768 sq ft) and a Storage Tek SL8500 10000 slot robot (198 sq ft).

  -----------------------------------------------------------------------------
  Vendor         Library      H (ft)    W (ft)    L (ft)    FP (sq    slots
                                                            ft)       
  -------------- ------------ --------- --------- --------- --------- ---------
  ADIC           AML2-2Q-1R   ?         24        32        768       9600

  ADIC           3 x I2000    6.45      9.58      15.8      151.3     9900

  Storage Tek    SL8500       7.5       5.6       18.5      103.6     6640

  Storage Tek    SL8500       7.5       5.6       30        198       10000

  IBM            3584-L52     5.9       4         41.4      164.4     6887

  Spectralogic   T950         6.56      3.6       12.76     45.9      6000
  -----------------------------------------------------------------------------

Library power consumption is expected to be less than 2 kVA for each
library, so a total of 8 kVA should be available for libraries.

# Peripheral Equipment (movers, servers and drives)

Up to 100 drives and movers will be required. The movers run at about
2.5 Amps in a 2u form factor so about 15 can be accommodated in a rack
with 2 20 Amp feeds. This requires about 8 racks for a total occupation.
Also a rack of server machines, up to 8, may be required. This should
also be able to be accommodated by two 20 Amp feeds.

  -------------------------------------------------------------------------
  Equipment                 Count           Power/Unit      Total Power
  ------------------------- --------------- --------------- ---------------
  Movers                    100             300VA (2.5A)    30 kVA

  Servers                   8               420VA (3.5A)    3.4 kVA

  Racks                     9               \-              \-

  Tape drives               100             100VA           10 kVA

  Total peripheral power                                    43 kVA
  -------------------------------------------------------------------------

# Networking Equipment and other connectivity

The above equipment each requires a single GB NIC. Network switching
supporting 120 GB connections to the FNAL core network and 25
connections to the enstore network is required. In addition the private
sub-net used by enstore may need to extend from FCC to GCC.

Tape drives attached to the library will communicate with the racked
mover nodes via Fiber Channel connectivity (up to 100 fibers).

All connectivity listed above is to be routed via overhead cable trays.

# Environment

Temperature and relative humidity ( non condensing ) need to be
maintained at 72 degrees Fahrenheit (dry bulb), 50% RH for the media.
The relative humidity should always be maintained within the range of
\[40,60\] % and the temperature \[65,79\] degrees Fahrenheit.[^1]

Tape drive operating environment requirements fall within the range of
the media requirements.

The room should provide a relatively dust free computer room
environment.

# Service across power outages

Tape library service needs to be maintained across unplanned power
outages. It is expected that a combination of UPS and some fashion
(permanent or rolling) of backup generator will provide this capability.
In the case of a an unplanned power disruption, enough UPS needs to be
supplied to keep the tape library, its supporting peripherals (tape
drives, servers, movers) and all supporting networking, and the AC (to
maintain required temperature and RH for the tape media) powered up
until contingency generators are moved into place and providing power.

[^1]: These requirements meet Storage Tek's and Imation's media archival
    requirements