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[#50] netmap: Clarify MaxObjectSize parameter implication on object size

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Signed-off-by: Aleksey Savchuk <a.savchuk@yadro.com>
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Aleksey Savchuk 2024-09-05 14:21:02 +03:00
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netmap/types.proto
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@ -289,6 +289,31 @@ message NetworkConfig {
// - **MaxObjectSize** \
// Maximum size of physically stored NeoFS object measured in bytes.
// Value: little-endian integer. Default: 0.
//
// This value refers to the maximum size of a **physically** stored object
// in NeoFS. However, from a user's perspective, the **logical** size of a
// stored object can be significantly larger. The relationship between the
// physical and logical object sizes is governed by the following formula
//
// $$\mathrm{Stored\ Object\ Size} \le
// \frac{\left(\mathrm{Max\ Object\ Size}\right)^2}{\mathrm{Object\ ID\
// Size}}$$
//
// This arises from the fact that a tombstone, also being an object, stores
// the IDs of inhumed objects and cannot be divided into smaller fragments,
// thus having an upper limit for its size.
//
// For example, if:
// * Max Object Size Size = 64 MiB;
// * Object ID Size = 32 B;
//
// then:
// $$
// \mathrm{Stored\ Object\ Size} \le
// \frac{\left(64\ \mathrm{MiB}\right)^2}{32\ \mathrm{B}} =
// \frac{2^{52}}{2^5}\ \mathrm{B} =
// 2^{47}\ \mathrm{B} = 128\ \mathrm{TiB}
// $$
// - **WithdrawFee** \
// Fee paid for withdrawal of funds paid by the account owner.
// Value: little-endian integer. Default: 0.