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RAID performance low after drive replacement  


Posts: 4
(@elishmee)
New Member
Joined: 2 months ago

I replaced all four drives in my Thunderbay RAID 5 with Toshiba Server class 7200rpm 8tb drives. Upon a disk speed test my read and write are both in the high 200's. I recall being in the 400-500 range with my previous drives. The volume is about 40% full. Any ideas what might be happening?

3 Replies
Posts: 2526
(@softraid-support)
Member
Joined: 5 years ago

200MBs sounds low for fast drives, even when the volume is 50% full.

Run AJA system test, with 5K video, RGBA codec and 64GB file size.

What are you getting?

Is it possible spotlight is actively indexing? That will dramatically slow performance.

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Posts: 4
(@elishmee)
New Member
Joined: 2 months ago

Alright... so with the AJA test and your settings I got 357 write and 505 read. Is this in line with what you'd expect? I confirmed Spotlight was not indexing.

 

Thanks!

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Posts: 2526
(@softraid-support)
Member
Joined: 5 years ago

That is a little low, but if the volume is 50% full, reasonable.

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