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Article Number: 000082030

Data Domain: System Memory Requirements and Expanded Storage Configurations

Summary: This document serves as a guide for expected Data Domain (DD) model configurations relating to Capacity and Memory options. Failure to comply with prescribed configurations can result in the file system being disabled or hardware upgrades failing. ...

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Article Content

Symptoms

This article details Storage configurations and memory requirements for the current range of Data Domain models.

If the wrong configuration is used or there is not enough memory to support the configuration, the following symptoms can occur:
  • Unable to expand storage or add an expansion shelf
  • File system does not start
  • Usable storage is less than expected
  • System misconfigured alerts

Cause

The following examples are potential causes for a misconfigured DD system:
  • More storage was added to a Data Domain system without upgrading the memory (shelf memory kit was not included).
  • A chassis swap procedure has occurred, and the memory was not moved over to the new chassis.
  • A DIMM has failed or not been installed incorrectly (such as not seated or misplaced)
  • File system does not start with Alert "Memory size (xKB) goes below the configured size (nKB)."
  • Data Domain systems boot into the kernel logger.
  • Required licenses have not been added or updated

Resolution

Useful DD CLI commands to check the installed hardware or configuration of the DD unit:  
#system show meminfo 
#system show ports
#system show hardware
#enclosure show memory
#enclosure show misconfiguration (
#filesys show space
#enclosure show topology
#storage show all
#elicense show all // license show (depending on licencing type used)

Compare the outputs gathered from Data Domain System with the expected configuration documented below:

DATA DOMAIN SYSTEM

Memory Requirements - RAW Storage Capacity - Max or Min Expansion Shelf Count

DD160
(EOSL: 30-June-2020)

6 GB for up to 6TB storage 

DD620
(EOSL: 31-December-2019)

8 GB for up to 12TB storage
DD990
(EOSL: 31-December-2020)
128GB of memory installed (Base Config):
  2x 8GB DIMMs in each of 8x Memory Risers (Total = 16x 8GB DIMMs = 128GB)
  Minimum Shelves = 4 
  Up to 12x 30TB shelves or 8x 45TB shelves 
  Max 360TB RAW or 285TB Usable storage
  3x SAS Cards
 
256GB of memory installed (Expanded Config): 
  4x 8GB DIMMs in each of 8x Memory Risers (Total = 32x 8GB DIMMs =258GB)
  Up to 24x 30TB shelves or 16x 45TB shelves 
  Max 720TB Raw or 570TB Usable storage
  3x SAS Cards
 
DD990 controller with DD Extended Retention (256GB)
  Up to 56 ES20/ES30 shelves (1, 2, or 3TB disks)
  Max 1440TB Raw or 1.1PB Usable storage (Active or Archive Tier RAW Max = 720TB Each)
  4x SAS Cards

DD990 controller with DD Cloud Tier (256GB)
  4x ES30 - 45TB Shelves (no DS60 support) for Metadata = Total 180TB 
  Max 1440TB Cloud capacity 
  4x SAS Cards
DD2200-4TB

8GB (2x 4GB) of memory installed (Entry):
  No external storage is allowed.
  7x 2TB HDDs
  4TB Usable
DD2200-14/24TB

16GB (4x 4GB) of memory installed
  No external storage is allowed.
  7+5 or 12 - disk 2TB HDDs
  7+5 = 13.2TB Usable // 12-disk = 17.2TB Usable
DD2500

32GB (4x 8GB) of memory installed (Base configuration)
  Max 1x 30TB SAS Shelf
  3TB SAS HDDs = 21TB or 36TB Raw capacity (Internal)
  7 or 7+5 or 12 - disk variants
  7 = 11.2TB // 7+5 = 20TB // 12-disk = 26TB Usable capacity
  
64GB (8x 8GB) of memory installed (Expanded):
  Max. 4x 30TB OR 3x 45TB SAS Shelf = Max 135 TB Raw Capacity
DD4200

128GB (16x 8GB) of memory installed (Base Config): 
  Minimum Shelves = 1
  Up to 8x 30TB shelves OR 5x 45TB shelves 
  Max 240TB Raw capacity OR 189TB Usable capacity
  2x SAS I/O Modules

DD4200 with DD Extended Retention (128GB)
  Minimum 1x shelf in Active Tier + 1x Shelf in Retention Tier
  Up to 16x 30TB shelves OR 10x 45TB shelves,
  Max. 480 Raw Capacity OR 378TB Usable storage (Active or Archive Tier RAW Max = 240TB Each)
  4x SAS I/O Modules

DD4200 with DD Cloud Tier (128GB)
  Minimum Shelves = 1 in Active Tier + 2x Cloud Tier metadata shelves
  Up to 8x 30TB shelves OR 5x 45TB shelves for Active Tier
  2x 45TB Shelves or Packs for Cloud Tier metadata (ES30 or DS60)
  Max 240TB Raw capacity OR 189TB Usable capacity on Active Tier
  Max 378TB Cloud Tier
  3x SAS I/O Modules

DD4500
 

192 GB (8x 16GB + 8x 8GB) of memory installed (Base Config):  
Minimum Shelves = 2
  Up to 12x 30TB shelves OR 8x 45TB shelves 
  Max 360TB Raw capacity OR 285TB Usable capacity
  2x SAS I/O Modules

DD4500 with DD Extended Retention (192GB)
  Minimum 2x shelf in Active Tier + 1x Shelf in Retention Tier
  Up to 24x 30TB shelves OR 16x 45TB shelves,
  Max. 720TB Raw Capacity OR 570TB Usable storage (Active or Archive Tier RAW Max = 360TB Each)
  4x SAS I/O Modules

DD4500 with DD Cloud Tier (192GB)
  Minimum Shelves = 2 in Active Tier + 2x Cloud Tier metadata shelves
  Up to 12x 30TB shelves OR 8x 45TB shelves for Active Tier
  2x 60TB Shelves or Packs for Cloud Tier metadata (ES30 or DS60)
  Max 360TB Raw capacity OR 285TB Usable capacity on Active Tier
  Max 570TB Cloud Tier
  3x SAS I/O Modules
DD7200

128GB (8x 16GB) of memory installed (Base Config): 
  DIMMs populate slots: 0, 2, 5, 7, 8, 10, 13, and 15 (the remainder is empty)
  Minimum Shelves = 3
  Up to 12x 30TB shelves OR 8x 45TB shelves 
  Max 360TB Raw capacity OR 285TB Usable capacity
  2x SAS I/O Modules

256GB (16x 16GB) of memory installed (Expanded)
  All DIMM Slots are populated with 16GB DIMMs.
  Minimum Shelves = 3
  Up to 18x 30TB shelves OR 12x 45TB shelves 
  Max 540TB Raw capacity OR 428TB Usable capacity
  2x SAS I/O Modules

DD7200 with DD Extended Retention (256GB)
  Minimum 3x shelf in Active Tier + 1x Shelf in Retention Tier
  Up to 36x 30TB shelves OR 24x 45TB shelves,
  Max. 1080TB Raw Capacity OR 856TB Usable storage (Active or Archive RAW Tier Max = 540TB Each)
  4x SAS I/O Modules

DD7200 with DD Cloud Tier (256GB)
  Minimum Shelves = 3 in Active Tier + 4x Cloud Tier metadata shelves
  Up to 18x 30TB shelves OR 12x 45TB shelves for Active Tier
  4x 60TB Shelves or Packs for Cloud Tier metadata (ES30 or DS60)
  Max 540TB Raw capacity OR 428TB Usable capacity on Active Tier
  Max 856TB Cloud Tier
  4x SAS I/O Modules
DD6300

48GB (6x 8GB) of memory installed (Base configuration):
  DIMMs populate slots: 2, 5, 7, 8, 10, and 13 
  Minimum Shelves = 0 (All-in-One; 7, 7+5 or 12 - disk - 4TB SAS HDDs)
  7-disk = 14TB usable // 7+5 = 22TB // 12 - disk = 28TB usable
  Max Shelf count = 1 -> 1x 30TB shelf OR 1x 45TB shelf OR 1x 60TB shelf 
  Max 60TB Raw EXTERNAL capacity OR 48TB Usable EXTERNAL capacity
  Max 76 TB (28 TB internal + 48 TB external)
  Metadata on Flash (MDoF) =  1x 800GB SSD in 2.5" bay (a.k.a Cache Tier)

96GB (12x 8GB) of memory installed (Expanded Config)
  DIMMs populate slots: 0, 2, 4, 5, 6, 7, 8, 9, 10, 11, 13, and 15 
  Max = 180TB RAW OR 144TB Usable External Capacity
  Max Shelf count = 5
  Metadata on Flash (MDoF) = 2x 800GB SSD in 2.5" bay (a.k.a Cache Tier)
  Partial Shelf Licensing is available for this model - use ES30 with 4TB drives (43.6TiB) at 50% utilization (21.8 TiB) in the active tier if the available licensed capacity is exactly 21.8 TiB.
  No Archive or Cloud Tier options for this model 
DD6800
192GB (8x 16GB + 8x8GB) of memory installed (Base Config)
  16GB DIMMs in slots: 0, 2, 5, 7, 8, 10, 13, and 15 (the remainder are populated by 8GB DIMMs)
  Minimum shelves = 2
  Up to 6x 30TB shelves OR 4x 45TB shelves OR 3x 60TB shelves
  Maximum Active Tier Capacity = 180TB RAW or 144 Usable External capacity  
  Metadata on Flash (MDoF) = 2x 3.5" 800GB SSDs (Cache Tier on FS15 shelf)

192GB (8x 16GB + 8x8GB) of memory installed (Expanded Config)
  Up to 12x 30TB shelves OR 8x 45TB shelves OR 6x 60TB shelves
  Max Capacity Active OR Archive Tier = 360 RAW or 288TB (576TB Total) Usable External capacity
  Max Capacity Cloud Tier = 576TB 
  Max Connectivity = 28x Shelves for Extended Retention (not exceeding Usable capacity limits)
  DD Cloud Tier requires two ES30 shelves fully populated with 4 TB drives to store DD Cloud Tier metadata.
  Metadata on Flash (MDoF) = 4x 3.5" 800GB SSDs (Cache Tier on FS15 shelf)
DD9300
192GB (4x 32GB + 4x 16GB) of memory installed (Base Config)
  32GB DIMMs populate slots: 5, 7, 8, and 10
  16GB DIMMs populate slots: 0, 2, 13, and 15
  Minimum shelves = 3
  2x SAS I/O Modules (Slots 2 and 7)
  Up to10x 45TB shelves OR 8x 60TB shelves
  Max Active Tier Capacity = 480 RAW or 384TB Usable External capacity
  Metadata on Flash (MDoF) = 5x 3.5" 800GB SSDs (Cache Tier on FS15 shelf)

384GB (8 x32 GB + 8 x 16GB) of memory installed (Expanded Config)
  32GB DIMMs populate slots: 0, 2, 5, 7, 8, 10, 13, and 15
  16GB DIMMs populate slots: 1, 3, 4, 6, 9, 11, 12, and 14
  2x SAS I/O Modules (Slots 2 and 7)
  Max Shelves = 28 (without exceeding capacity limits)
  Max Active / Archive Tier Capacity = 900TB RAW or 720TB Usable External capacity
  Max Capacity Cloud Tier = 1440TB Usable (4x 60TB Metadata shelves or packs required)
  Metadata on Flash (MDoF) = 8x 3.5" 800GB SSDs (Cache Tier on FS15 shelf)
DD9500 256GB (32 x 8GB) of memory installed (Base Config):
  See attached DD9500/DD9800 DIMM Guide for DIMM locations (p.4/5)
  Minimum shelves = Any combination of ES30/DS60 to a minimum of 4x Shelves or Packs
  Maximum 540TB RAW storage OR 432TB Usable
  3x SAS I/O Modules (Slots 2, 3, and 6)
  Metadata on Flash (MDoF) = 8x 3.5" 800GB SSDs (a.k.a Cache Tier on FS15 shelf)

512GB (32x 8GB + 16x 16GB) of memory installed (Expanded Config)
  See attached DIMM/Memory Guide for DIMM locations (p.4/5)
  Any combination of ES30/DS60 to a maximum of 1080TB (RAW) / 864TB Usable
  3x SAS I/O-Modules (Slots 2, 3, and 6)
  Max Shelves = 30
  Metadata on Flash (MDoF/FS15) = 15x 3.5" 800GB SSDs (a.k.a Cache Tier)

DD9500 with DD Extended Retention (512GB)
  Any combination of ES30/DS60 to a maximum of 2160TB (RAW) / 1728TB Usable
  4x SAS I/O-Modules (Slots 2, 3, 6, and 9)
  Max Active / Archive Tier Capacity = 1080TB RAW or 864TB Usable External capacity
  Max connectivity with ER = 56 ES30/Mix OR 12x DS60
  Metadata on Flash (MDoF/FS15) = 15x 3.5" 800GB SSDs (a.k.a Cache Tier)

DD9500 with DD Cloud Tier (512GB)
  Any combination of ES30/DS60 to a maximum of 1080TB (RAW) / 864TB Usable on Active Tier
  Max Capacity Cloud Tier = 1728TB Usable (2x Active Tier)
  5x 60TB (300TB) Metadata shelves or packs required (ES30 or DS60)
  4x SAS I/O-Modules (Slots 2, 3, 6, and 9)
  Metadata on Flash (MDoF/FS15) = 15x 3.5" 800GB SSDs (a.k.a Cache Tier)
DD9800
256GB (32 x 8GB) of memory installed (Base Config):
  See attached DD9500/DD9800 DIMM Guide for DIMM locations
  Minimum shelves = Any combination of ES30/DS60 to a minimum of 450TB Raw capacity
  Maximum storage = 630TB Raw storage OR 504TB Usable
  3x SAS I/O Modules (Slots 2, 3, and 6)
  Metadata on Flash (MDoF) = 8x 3.5" 800GB SSDs (Cache Tier)

768GB (32x 8GB + 32x 32GB) of memory installed (Expanded):
  See attached DD9500/DD9800 DIMM Guide for DIMM locations
  Any combination of ES30/DS60 to a maximum of 1260TB Raw / 1008TB Usable
  3x SAS I/O Modules (Slots 2, 3, and 6)
  Metadata on Flash (MDoF) = 15x 3.5" 800GB SSDs (Cache Tier) 
       
DD9800 with DD Extended Retention (768GB)  
  Any combination of ES30/DS60 to a maximum of 2520TB (RAW) / 2016TB Usable
  Max Active OR Archive Tier Capacity = 1260TB RAW or 1008TB Usable External capacity
  Max connectivity = 56 ES30/Mix OR 14x DS60 + 1x FS15 for Cache
  4x SAS I/O Modules (Slots 2, 3, 6, and 9)
  Metadata on Flash (MDoF/FS15) = 15x 3.5" 800GB SSDs (a.k.a Cache Tier)

DD9800 with DD Cloud Tier (768GB)
  Any combination of ES30/DS60 to a maximum of 1260TB (RAW) / 1008TB Usable
  Max Appliance Capacity = 1008TB on site + 2x in the Cloud (Total = 3024TB Usable)
  Max Capacity Cloud Tier = 2016TB Usable
  5x 60TB (300TB) Metadata shelves or packs required (ES30 or DS60)
  4x SAS I/O-Modules (Slots 2, 3, 6, and 9)
  Metadata on Flash (MDoF/FS15) = 15x 3.5" 800GB SSDs (a.k.a Cache Tier)
PowerProtect DD3300
There are 3x variants of DD3300:
- 4TB, 16TB & 32TB of Usable capacity
 - 4TB can be expanded to 16TB.
- 16TB can be expanded to 32TB.
- A system that is initially 4TB cannot be expanded to 32TB.
- No External storage can be added.
- Max SSD Cache Tier is 1% of the Active Tier capacity (on 16TB & 32TB models) 

DD3300-4TB:
  - 16GB (2x 8GB DIMMs) of installed memory
  - Memory Installed in Slots:  A1 and A2
  - 4x 4TB HDDs in Front slots
  - 4TB Usable Active Tier capacity
  - 8TB Usable Cloud Tier capacity
  - 1TB for DD Cloud Tier metadata
  - No SSD in Rear slot

DD3300-16TB:
  - 48GB (6x 8GB DIMMs) of installed memory
  - Memory Installed in Slots: A1, A2, A3, A4, A5, and A6
  - 10x 4TB HDDs in Front slots
  - 16TB Usable Active Tier capacity
  - 32TB Usable Cloud Tier capacity
  - 2x 1TB for DD Cloud Tier metadata
  - 1x 480GB SSD (Rear slot) for NVRAM and SSD Cache Tier (160GB)

DD3300-32TB:
  - 64GB (8x 8GB DIMMs) of installed memory
  - Memory Installed in Slots: A1, A2, A3, A4, A5, A6, A7, and A8
  - 12x 4TB HDDs in Front slots + 4x 4TB HDDs in Middle slots (Under the lid)
  - 32TB Usable Active Tier capacity
  - 64TB Usable Cloud Tier capacity
  - 4x 1TB for DD Cloud Tier metadata
  - 1x 480GB SSD (Rear slot) for NVRAM and SSD Cache Tier (320GB)  
PowerProtect DD6900 DD6900:
- 288GB RAM (12 x 8GB + 12 x 16GB DIMMS)
- SAS Shelves ONLY (SATA shelves are NOT supported)
- Supported disks/shelves: *3TB (ES30) | 4TB (ES30/ES40/DS60) 
- * 3TB only supported on Controller (headswap) upgrades - not fresh install (or # filesys create)
- Ships with 4TB ES40|DS60
- Minimum 1x 60TB Shelf required
- Partial Shelf Licensing is available for this model - use ES40 with 4TB drives (43.6TiB) at 50% utilization (21.8 TiB) in the active tier if the available licensed capacity is exactly 21.8 TiB.
- Active Tier: Any combination of supported shelves to a MAXIMUM capacity of 360TB Raw || 288TB Usable
- Max capacity = 288TB (Active Tier) + 2x Cloud Tier (578TBu) = 866TBu
- Cache Tier = 2 drives (2x 1.92TB SSD internal |or| 2x 3.84TB SSD external - in FS25, if HA)
- Cloud Tier = 2x 60TB shelves for Cloud Tier Metadata
PowerProtect DD9400 DD9400:
- 576GB RAM (12 x 32GB + 12 x 16GB)
- SAS Shelves ONLY (SATA shelves are NOT supported)
- Supported disks/shelves: *3TB (ES30) | *4TB (ES30/ES40/DS60) | 8TB (ES40/DS60)
- *3|4 TB only supported on Controller (headswap) upgrades - not fresh install (or # filesys create) 
- Ships with 8TB ES40|DS60​​
- Minimum 4x 60TB Shelf required (240TB Raw)
- Active Tier: Any combination of supported shelves to a MAXIMUM capacity of 960TB Raw || 768TB Usable
- Max Capacity = 768TB (Active Tier) + 2x Cloud Tier (1536TBu) = 2304TBu
- Cache Tier = 5 drives (5x 1.92TB SSD internal |or| 5x 3.84TB SSD external - in FS25, if HA)
- Cloud Tier = 4x 60TB shelves for Cloud Tier Metadata
- Over-Provisioning = 2x 60TB Shelves
PowerProtect DD9900 DD9900:
- 1152GB RAM (24 x 32GB + 24 x 16GB)
- SAS Shelves ONLY (SATA shelves are NOT supported)
- Supported disks/shelves: *3TB (ES30) | *4TB (ES30/ES40/DS60) | 8TB (ES40/DS60) 
- *3|4 TB only supported on Controller (headswap) upgrades - not fresh install (or # filesys create) 
- Ships with 8TB ES40|DS60
- Minimum 6x shelves AND more than 720TB Raw Capacity 
- Active Tier: Any combination of supported shelves to a MAXIMUM capacity of 1920TB Raw || 1248TB Usable
- Max Capacity = 1248TBu (Active Tier) + 2x Cloud Tier (2496TBu) = 3744TBu
- Cache Tier = 10x 3.84TB SSD external in FS25 shelf (on its OWN SAS Chain)
- Cloud Tier = 5x 60TB shelves for Cloud Tier Metadata
- Over-Provisioning = 2x 60TB Shelves

Additional Information

References:

Note:

  • ALL capacity figures are quoted in Base10 for simplicity, for example 1000MB = 1GB = 0.001TB
  • Base2 (MiB, GiB, or TiB) figures can generally be found in the capacity sections of the related system hardware guides, for example, 4TB disk = 3.63TiB

Article Properties

Affected Product

Data Domain

Product

Data Domain, Data Domain Deduplication Storage Systems

Last Published Date

29 Mar 2024

Version

5

Article Type

Solution

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