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idata
Community Manager
1,108 Views

X25-E Concurrent Writes

Hi,

We have a short questions about the internal concurreny of writes:

It is said that Native Command Queuing enables up to 32 concurrent operations, but how many (internal) operations can actually write concurrently.

In a normal HD I have x Read/Write Heads so (in theory) I could perform x concurrent operations on a physical level.

What is the theorectical and physical equivalent to this in the intel x25 e SSD

Thanks

JS

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3 Replies
idata
Community Manager
37 Views

The X25-E controller has 10 channels to 10 independent NAND chips so I would assume 10.

idata
Community Manager
37 Views

Would it not depend on queue depth? Performance scaling stops after QD32.

idata
Community Manager
37 Views

If we are talking about concurrent as in how many operations can be performed in a clock cycle... I would guess 10 possible operations possible. If using toggle or double data rate NAND, it would be 20 possible operations in a clock cycle. This is my guessing based on what is public about the drive and assuming the clock is synchronous.

I guess it depends on how the question is framed.... Like how many IOPs do SSDs achieve in sequential reads at different QDs? That would be a different answer...