נפח האחסון של היחידה מספיק.

Because in Hebrew, the verb to be is usually omitted in the present tense.

So:

• נפח האחסון של היחידה מספיק. = The storage capacity of the unit is sufficient / enough.

In past or future, Hebrew would use forms of היה:

• נפח האחסון של היחידה היה מספיק. = The storage capacity of the unit was sufficient.
• נפח האחסון של היחידה יהיה מספיק. = The storage capacity of the unit will be sufficient.

נפח literally means volume or capacity.

In this sentence, it refers to capacity in the sense of how much can be stored, so נפח האחסון means storage capacity.

A learner may know נפח from physical volume, and that is also correct in other contexts. Here, though, it is being used in a technical sense.

Because Hebrew often uses a construct chain (called סמיכות) to express X of Y.

So:

• נפח האחסון = the volume/capacity of the storage → more naturally, the storage capacity

In a construct chain:

• the first noun usually does not take ה־
• the second noun can take ה־ if the whole phrase is definite

So even though the phrase is definite, you get:

• נפח האחסון not
• הנפח האחסון

This is a very common Hebrew structure.

Because it is the first word in a construct chain.

In Hebrew construct phrases, definiteness is usually marked on the second noun, not the first.

So:

• נפח אחסון = storage capacity / a storage capacity
• נפח האחסון = the storage capacity

Even though נפח itself has no ה־, the whole phrase becomes definite because האחסון is definite.

של היחידה means of the unit.

• של = of
• היחידה = the unit

So the full phrase is:

• נפח האחסון של היחידה = the storage capacity of the unit

Hebrew often mixes a construct chain with של:

• נפח האחסון = storage capacity
• של היחידה = of the unit

This is very natural Hebrew.

Literally, יחידה means unit.

Depending on context, it could refer to:

• a device
• a hardware unit
• a component
• a module
• sometimes even a military unit in other contexts

In this sentence, it most likely means some kind of device or unit whose storage capacity is being discussed.

So English might translate it more naturally as:

• the device
• the unit
• the drive/module

depending on the context.

Because מספיק agrees with נפח, which is a masculine singular noun.

In Hebrew, predicate adjectives usually agree in gender and number with the noun they describe.

• נפח = masculine singular
• so: מספיק = masculine singular

Compare:

• הקיבולת מספיקה. = The capacity is sufficient.
  (קיבולת is feminine singular, so מספיקה)

• הנתונים מספיקים. = The data are sufficient.
  (masculine plural)

So here, מספיק is correct because נפח is masculine singular.

Here, מספיק is functioning like an adjective, meaning sufficient or enough.

So:

• נפח האחסון של היחידה מספיק. = The unit’s storage capacity is sufficient.

But מספיק can also be related to the verb להספיק, which has meanings like:

• to be enough
• to suffice
• to manage to

For example:

• זה מספיק. = That’s enough / That is sufficient.
• לא הספקתי. = I didn’t manage / I didn’t have enough time.

So a learner may see a connection between adjective-like and verb-like uses.

Yes. This is a very normal Hebrew word order.

Structure:

• נפח האחסון של היחידה = subject noun phrase
• מספיק = predicate adjective

So it is basically:

• [The storage capacity of the unit] [is sufficient].

This is a standard, neutral way to say it.

Yes, that is a very natural English translation.

The Hebrew sentence literally says:

• The storage capacity of the unit is sufficient

But in smoother English, you could say:

• The unit has enough storage capacity
• The unit’s storage capacity is sufficient
• The unit has sufficient storage

All are reasonable depending on style.

A common pronunciation guide would be:

Nefakh ha-ikhsun shel ha-yekhida maspik.

A slightly more detailed breakdown:

• נפח — nefakh
• האחסון — ha-ikhsun
• של — shel
• היחידה — ha-ye-khi-da
• מספיק — mas-pik

Pronunciations vary a bit depending on accent, especially with sounds like ח.

Because נפח היחידה would usually mean the volume of the unit itself, meaning its physical size.

But this sentence is about storage capacity, not physical volume.

So Hebrew uses:

• נפח האחסון של היחידה = the storage capacity of the unit

That makes the meaning much more specific.

Yes. Word-for-word, it is very close to storage volume.

However, in technical English, storage capacity is usually the more natural translation.

So:

• literal feel: storage volume
• better English in most contexts: storage capacity

Both point to the same basic idea here.

It is mostly neutral and slightly technical.

It sounds natural in contexts like:

• product specifications
• manuals
• technical support
• descriptions of devices or components

It is not especially slangy or especially literary. It is the kind of sentence you could easily see in a spec sheet or technical explanation.