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Poor disk performance on vSphere 5.5u2


mavvy
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Hello. I've a Microserver Gen8 whit 16GB of Ram. i0ve isntalled vSphere 5.5u2 whit Hp custom image, but the disk performance it very poor. I have 2 WD 1TB Blue in Raid1 on slot 1,2 and 2 WD 2TB Red in Raid1 in slot 3,4 all on b120i. I've enabled 128mb read cache (write cache it's 0mb because we can't install cache memory, right?) whit hp ssa offline (i've read the post of schoondoggy) but the disk are very slow. For example, i put a 5gb iso image on datastore and this work take 15min to end. What i've done wrong?

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i confirm that now work very nice! I can't believe that the b120i are slowest than AMD AHCI (my oldest vmware host are an amd 640 quad whit 760g chipset) Thank you very much!!! And sorry for my english guys :(

Edited by mavvy
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