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Hao
Asked: 2012-02-09 07:32:00 +0800 CST

Database server is better to have SAS than SATA, also preferable RAID1?

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I want to know if it's better to hast DB server by SAS hard disk than SATA hard disk?

And it's also better to use RAID1.

I don't know much about RAID.

If the server is RAID6 default. Can I change it to RAID1? How?

raid sas sata

1 Answers

  1. I want to know if it's better to hast DB server by SAS hard disk than SATA hard disk?

    Depends. I am very happy witha system of 8 SATA discs (Velociraptor) and 2 SSD + operating system discs. Better is relative - also depends on needed speed. The window for SAS is narrow, though - need too much speed and SSD are cheaper. I use a SAS backplane, though. THe Server has now a total of 22 discs, 24 slots, the next upgrade puts it into a new case for 72 discs.

    And it's also better to use RAID1.

    Better than WHAT?

    I don't know much about RAID.

    Read the documentation.

    If the server is RAID6 default. Can I change it to RAID1? How?

    Depends on the server. Hardware raid? Did I mention it is a decent idea to read the documentation? Software - what OS?

    In general, database servers either are trivial or require someone with knowledge what he does to plane the IO layout / budget properly.

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