Dot Hill Systems II 200 FC Manuale Utente

Chapter 3 Unpacking Your Array

3.3

Field-Replaceable Units

Check that you received all field-replaceable units (FRUs) ordered with your array. For 
additional FRUs, consult your sales representative. For instructions on how to install or 
replace FRUs, review the following manuals located on the product web site or on 
your documentation CD:

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All FRUs are hot-swappable except the I/O controller and I/O expansion modules, 
which are hot-serviceable. Hot-swappable means that a live upgrade can be 
performed—the FRU can be removed and replaced while the RAID array is powered 
on and operational. Hot-serviceable means that the module can be replaced while the 
array and hosts are powered on but the connected hosts must be inactive.

You can mix capacity in the same chassis, but not spindle speed revolutions 

per minute (RPM) on the same SCSI bus. For instance, you can use 36-Gbyte and 73-
Gbyte drives with no performance problems if both are 10K RPM drives. Violating this 
configuration guideline leads to poor performance.

For a list of the FRU part numbers, refer to the SANnet II Family FRU Installation 
Guide.

3.4

Customer-Provided Cables

Customers must provide a minimum of one fiber-optic cable per host to connect a host 
to a RAID array. Two fiber-optic cables are required for a redundant path 
configuration. 

To obtain qualified cables, consult your Dot Hill sales representative.

3.5

Mounting Your Array in a Rack or Cabinet

Refer to SANnet II Family Rack Installation Guide for 2U Arrays for instructions on 
how to install and prepare a rack or cabinet for mounting your array.