I wonder if JMB363 can support really full bandwidth of SATA2 HDD?

[mericrius]

Hi.

SouthBridge of My motherboard is ICH8.

ICH8 doesn't support AHCI.

So, my motherboard has JMB363 storage controller.

JMB363 is a single chip, one-lane PCI Express to two-port SATA2 and one-port PATA Host Controller.

I connect four of my HDDs(two SATA2 and two IDE HDDs) to JMB363.

Bandwidth of one-lane PCI Express is 2.5Gbs. But, bandwidth of SATA2 is 3Gbs.

Theoretically, Full bandwidth of my four HDDs is 3+3+0.66+0.66 = 7.32 Gbs.

Surely, four HDDs hardly have an opportunity for Full speed operation simultaneously.

But, I think that one-lane PCI Express cannot cover the bandwidth of four Hdds.

Furthermore, can JMB363 handle I/O requests of four HDDs simultaneously?

I want to know about this.

Thank you.

 

[Shadow703793]

Furthermore, can JMB363 handle I/O requests of four HDDs simultaneously?

Yes. You have more than enough bandwidth as HDDs don't come close to using the full SATA2 bandwidth. Only SSDs come close to filling SATA2.