hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Allen Wittenauer ...@yahoo-inc.com>
Subject Re: NameNode hardware specs
Date Tue, 12 Aug 2008 19:47:33 GMT

On 8/12/08 12:07 PM, "lohit" <lohit_bv@yahoo.com> wrote:
>>  - why RAID5?
>> - If running RAID 5, why is this necessary?
> Not absolute necessary.

    I'd be afraid of the write penalty of RAID5 vs, say, RAID10 or even just
plain RAID1.

    For the record, I don't think we have any production systems except
maybe one that uses any sort of RAID methods on the name node.

    I'm sure Steve will pop up at some point and explain his reasoning on
this one. ;)

View raw message