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NFSv4 Cluster Object Limits in ONTAP

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Applies to

  • ONTAP9
  • NFSv4.x

Answer

NFSv4 Client Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 1,000
2-23 GB 12,000
23+ GB 100,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 1,000 per GB
NFSv4 Owner Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 6,000
2-23 GB 128,000
23+ GB 1,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 6,000 per GB
NFSv4 Open State Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 26,000
2-23 GB 512,000
23-255 GB 1,000,000
>255 GB 4,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 20,000 per GB

ONTAP 9.18.1+ (Per-GB scaling for >255 GB)

  • Multiplier: 30,000 per GB
NFSv4 Delegation State Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 26,000
2-23 GB 512,000
23+ GB 1,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 20,000 per GB
NFSv4 Lock State Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 26,000
2-23 GB 512,000
23-31 GB 1,000,000
31-63 GB 2,000,000
63-127 GB 4,000,000
127-255 GB 1,000,000
>255 GB 4,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 20,000 per GB
NFSv4 Layout State Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 26,000
2-23 GB 512,000
23+ GB 1,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 10,000 per GB
NFSv4 Copy State Objects

All ONTAP versions

  • Fixed limit: 10,000 (all memory ranges)

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 10,000 per GB
NFSv4 Open Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 26,000
2-23 GB 512,000
23-255 GB 1,000,000
>255 GB 4,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 20,000 per GB

ONTAP 9.18.1+ (Per-GB scaling for >255 GB)

  • Multiplier: 30,000 per GB
NFSv4 Delegation Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 26,000
2-23 GB 512,000
23+ GB 1,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 20,000 per GB
NFSv4 ByteLock Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 26,000
2-23 GB 512,000
23+ GB 1,000,000 to 4,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 26,000 per GB
NFSv4 Layout Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 26,000
2-23 GB 512,000
23+ GB 1,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 10,000 per GB
NFSv4 LayoutLock Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 26,000
2-23 GB 512,000
23+ GB 1,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 10,000 per GB
NFSv4 String Objects

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 26,000
2-23 GB 256,000
23-255 GB 1,000,000
>255 GB 3,000,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 10,000 per GB
NFSv4 Sessions

ONTAP 9.8RC1 - 9.17.1RC1

Memory Limit
0-2 GB 1,000
2-23 GB 15,000
23+ GB 100,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 1,000 per GB
NFSv4 Execs

ONTAP 9.8RC1

Memory Limit
0-15 GB 512,000
15-23 GB 750,000
23+ GB 1,500,000

ONTAP 9.17.1RC1+ (Per-GB scaling for >255 GB)

  • Multiplier: 512 per GB

Additional Information

Limit Types

  • Static table: Fixed limits based on memory ranges (ONTAP 9.8RC1 - 9.17.1RC1)
  • Per-GB scaling: Dynamic calculation introduced in ONTAP 9.17.1RC1 for systems with >255 GB memory

Key Changes

  • ONTAP 9.17.1RC1: Per-GB scaling introduced for high-memory systems
  • ONTAP 9.18.1: Enhanced multipliers for Open State Objects and Open Objects (20,000 → 30,000 per GB)

Scope

  • All limits apply at Node level
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