Specifications

3
Configuring a Redundant Disk Array
15
Preparing hard disk drives to participate in an array
Table1identifiesthelocationsofharddiskdrivesthatcanbeusedbytheRTMSAS/SATA
controllerinanarray.ItalsoshowsthephysicalSASconnectionthatmustbepresentbefore
youcanincludetheharddiskdriveinanarraythroughaSASBIOSconfiguration.
Tip:BeforeconfiguringanarrayintheSASBIOS,makeacopyofanyexistingdataonthehard
diskdrives.AllexistingdataisdeletedfromtheharddiskdrivesthatparticipateinanISarray.
ForaharddiskdrivethatwillactastheprimaryharddiskdriveinanIMorIMEarray,theSAS
BIOSconfigurationgivesyoutheoptiontokeepexistingdataontheharddiskdrive.Forother
harddiskdrivesinanIMorIMEarra y,anyexistingdataisdeleted.
InFigure3,thetopillustrationshowstheconnectionsbetweenharddiskdrivesontwoRTMs
andtheCPMsinthefrontslots.Thebottomillustrationshowstheconnectionsbetweena
harddiskdrivearrayandharddiskdrivesontheRTM,withtheCPMinthefrontslot.
Table 1. Locations and SAS connections for eligible disks
Disk location Connection to the RTM SAS/SATA controller
RTM (with its SAS/SATA controller hosting the RAID) On board (no action required)
HDD AMC on a CPM in the front slot hosting the RTM Zone 3 connectors (no action required)
Another ATCA-5400 RTM Custom cable between the SAS 1 ports on each RTM
(see
Figure 3 on page 16)
HDD AMC on another CPM Custom cable between the SAS 2 ports on each RTM
(see
Figure 3 on page 16)
Any other hard disk drive or hard disk drive array that can be
connected to the RTM with a cable
Cable from the hard disk drive or hard disk drive array
to a SAS port on the RTM