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List:       ceph-users
Subject:    [ceph-users] Sharing SSD journals and SSD drive choice
From:       carheden () ucar ! edu (Adam Carheden)
Date:       2017-04-27 19:30:11
Message-ID: 4c77505e-7496-e6ec-aa59-b20a42c50f7f () ucar ! edu
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On 04/27/2017 12:46 PM, Alexandre DERUMIER wrote:
> 
>>> Also, 4 x Intel DC S3520 costs as much as 1 x Intel DC S3610. Obviously
>>> the single drive leaves more bays free for OSD disks, but is there any
>>> other reason a single S3610 is preferable to 4 S3520s? Wouldn't 4xS3520s
>>> mean:
> 
> where do you see this price difference ?
> 
> for me , S3520 are around 25-30% cheaper than S3610

The price difference probably has to do with size. You can get 150G
S3520 for $104 on newegg. 480G is the smallest S3610 I can find, which
is $526. (And yes, I have heard all the warnings about bigger drives
being better for reliability due to wear leveling and performance due to
the write/erase cycle and all that even though you don't need the space
for the journal)

Considering $/GB is slightly better for the S3520, is 1 S3610 still
better than 4 S3520? (Ignoring that the S3520s occupy drive bays that
could be used for OSDs, of course.)

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