Data Domain Memory Capacity

1. Verify if the Data Domain System has enough memory before adding a shelf. The following command will display the total amount of memory in the Data Domain system. At the command prompt type:

system show meminfo

->
sysadmin@dd690-101# system show meminfo
Memory Usage Summary
Total memory: 24089 MiB
Free memory: 12022 MiB
Total swap: 32767 MiB
Free swap: 32767 MiB

2. Compare the total amount of physical memory on the Data Domain System with the following chart below.

DATA DOMAIN SYSTEM MEMORY REQUIREMENT
DD565 8 GB for up to 15.5TB storage

12 GB for up to 23.5TB storage

DD580 16 GB for up to 31.5TB storage
DD580g 16 GB for up to 22.8TB of 3rd party provisioned storage
DD660 16 GB for up to 36TB storage
DD690 16 GB for up to 32TB storage

24 GB for up to 48TB storage

DD690g 24 GB for up to 35.5TB of 3rd party provisioned storage
DD880 48 GB for up to 96TB storage

64 GB for up to 192TB storage

DD880g 48 GB for up to 71.57TB of 3rd party provisioned storage

64 GB for up to 143.49TB of 3rd party provisioned storage

DD140 6 GB for up to 1.5TB storage
DD160 6 GB for up to 6TB storage
DD610 6 GB for up to 6TB storage
DD620 8 GB for up to 12TB storage
DD630 8 GB for up to 12 TB storage
DD640 8 GB for up to 12TB storage (Internal)

20 Gb for up to 30TB storage (External)

DD670 16 GB for up to 24 TB storage

36 GB for up to 64 TB storage

DD860 36 GB for up to 64TB storage

72 GB for up to 192TB storage

DD890 96 GB for up to 384 B storage
DD990 128 GB of memory installed:

• Up to 12 ES30 30TB shelves or 8 ES30 45TB shelves, adding up to 285TB storage

256 GB of memory installed:

• Up to 24 ES30 30TB shelves or 16 ES30 45TB shelves, adding up to 570TB storage

DD990 controller with DD Extended Retention software (256GB)

• Up to 56 ES30 shelves, adding up to 2011TB storage

DD2500 32 GB of memory installed:

• Up to 36TB internal storage (12 3TB Drives)

• Up to 1 ES30 shelf, adding up to 30TB storage

64 GB of memory installed:

• Up to 36TB storage (12 3TB Drives)

• Up to 4 ES30 2TB shelves, adding up to 120TB RAW storage

OR

• Up to 3 ES30 3TB shelves, adding up to 135TB RAW storage

DD4200 128 GB of memory installed:

• Up to 8 ES30 30TB shelves or up to 5 ES30 45TB shelves adding up to 189TB storage

DD4200 controller with DD Extended Retention software (128GB)

• Up to 24 ES30 30TB shelves or 16 ES30 45TB shelves, adding up to 569TB storage

DD4500 128 GB of memory installed:

• Up to 12 ES30 30TB shelves or 8 ES30 45TB shelves, adding up to 285TB storage

DD4500 controller with DD Extended Retention software (128GB)

• Up to 32 ES30 30TB or 45TB shelves, adding up to 1140TB storage

DD7200 128 GB of memory installed:

• Up to 12 ES30 30TB shelves or 8 ES30 45TB shelves, adding up to 285TB storage

256 GB of memory installed:

• Up to 18 ES30 30TB shelves or 12 ES30 45TB shelves, adding up to 428 TB storage

DD7200 controller with DD Extended Retention software (256GB)

• Up to 56 ES30 shelves, adding up to 1.7PB storage

3. The symptoms and any alerts should be corrected once the correct amount of system memory is installed.

From <https://emc–c.na5.visual.force.com/apex/KB_BreakFix_1?id=kA1700000000tMK>

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About Ahmad Sabry ElGendi

https://www.linkedin.com/pub/ahmad-elgendi/94/223/559
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