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How does loss of single drive influence 4k random performance of RAID 1 array?

Here is one explanation of the benefits of RAID 1: "As different disks can seek on different data, it [RAID 1] has up to 2x the random read IOPS but the same 1x (or slightly lower, due to ...
user1459339's user avatar
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1 answer
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Can the transfer rate of SATA limit the performance of a RAID array?

Let's say I have 4 drives and each of them has a transfer rate (random/sequential,read/write, it doesn't matter for the purpose of this question) of 250Mb/s. I put them in RAID 0. This means that I ...
Andrei's user avatar
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1 vote
1 answer
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4 SSDs RAID 0 integreted vs dedicated controller

I've been thinking about setting up 4 SSD RAID 0 to gain performance in my home PC, and I ran into this review of PCI-E based SSD. If I use PERC H310 (8 lane PCI-E 2.0 RAID controller, which means ...
Enis P. Aginić's user avatar
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poor write performance with RAID 5 array

I have an Intel RS2WC080 RAID controller card connected to an array of 8 WD Black 4TB SATA3 drives, in a RAID5 configuration. While the read speed is ~750MB/s the write speed hovers around 45MB/s. I ...
stib's user avatar
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