Dell Data Domain DD9500 Hardware Overview And Installation Manual

Also see for Data Domain DD9500: Manual

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Dell Data Domain DD9500 Hardware Overview And Installation Manual Manual pdf 56 page image

Connecting multiple ES30 shelves to the DD9500 /DD9800systemThe cabling diagrams in this section show the maximum configurations for theDD9500 and DD9800 systems. Not all systems will have all the disk shelves shown inthe diagrams.Add shelf-to-shelf cables between shelves in a loop and to the controller as shown inthe diagrams.1. Cable from the B Controller EXPANSION port of the lower shelf to the Bcontroller HOST port of the next higher shelf.2. Then cable from the A Controller HOST port of lower shelf to the A controllerEXPANSION port of the next higher shelf3. There are no specific placement or cabling requirements for SSD shelves, or themetadata shelves for DD Cloud Tier configurations. These shelves can be installedand cabled the same way as standard ES30 shelves.4. The SSD shelf counts towards the total number of shelves connected to thesystem.5. Data Domain recommends installing the SSD shelf in the V1.1 positon, but if that isnot possible, the shelf can be placed in a different location in the rack so long ascables of sufficient length are available.NoteV1.1 is recommended for better performance because this will the 1st hop wheredata will be written. If the SSD shelf is connected to the last enclosure in a chain,then each read/write request has to go through many hops, which introduceslatency issues when compared to when the SSD shelf is on the 1st shelf of a chain.6. Use the cable management assembly to support and organize all cables from theDD9500/DD9800 system.Select the appropriate configuration from the following list, and connect the diskshelves to the Data Domain controller.l DD9500 /DD9800 on page 56l DD9500 /DD9800 with HA (one rack) on page 58l DD9500 /DD9800 with HA (two racks) on page 60l DD9500 /DD9800 with DD Cloud Tier (Single node or HA) on page 63l DD9500 /DD9800 with ERSO on page 66DD9500 /DD9800For a base DD9500 /DD9800 system:String(Loop)I/O - Port Shelf Port Length a1 I/O 3 - Port 1 B controller HOST port of shelf V1.1 2MConnect Cables and Power on56 Data Domain DD9500 and DD9800 Systems 6.1 Hardware Overview and Installation Guide