Re: ZFS melting under postgres...

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To: <freebsd-current@...>
Date: Sunday, December 16, 2007 - 12:54 pm

Of course, I mean no disrespect to the machines :) I know they are fully
functional - there's really no difference once you get a full kernel to
boot on them. But you'll agree that there's not much file system traffic
on a network router (with the services you listed).

I'm interested in how SSD could help me (if they actually can) with
large-ish systems running web servers with associated software (e.g.
database) and office-like servers. So far, I'm having trouble
envisioning a seek-intensive storage application that's also temporary
(to avoid keeping the "real" data on flash drives). Maybe a mail server
queue, with mailboxes on standard drives?

To: Ivan Voras <ivoras@...>
Cc: <freebsd-current@...>
Date: Monday, December 17, 2007 - 9:12 am

Yep.
Although, I don't know if the "cheap" SSDs mentioned can compete with
the SD-RAM backed "super SSDs".
Because, in the mail-server scenario (also: clamav-box, spamassassin
etc.), all you really want to have is I/O.

I don't know if the flash-based "SSDs" can really compete in that area.

cheers,
Rainer
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To: <freebsd-current@...>
Date: Tuesday, December 18, 2007 - 4:33 pm

On a mostly unrelated subject, I'd just like to post this link for the
people following the thread:

http://gizmodo.com/gadgets/peripherals/hyperdrive4-is-a-ram-hard-drive-fa=
st-as-lightning-335274.php

I was not talking about that level of hardware :)

To: Ivan Voras <ivoras@...>
Cc: <freebsd-current@...>
Date: Tuesday, December 18, 2007 - 5:53 pm

Hey, that's cheap.
Thanks for the link.
Their comparison with TMS's RAMSAN is a bit unfair, though. A good
part of the price-difference between the two comes from the fact that
the later connects via FC and it's actually a small SAN-array (hence
the name). Makes all the eSATA-crap unnecessary and allows for easier
sharing of the device.
But still, the Hyperdrive looks promising.
The problem is: our servers don't come with 5.25" bays anymore -
we've long since left that form-factor behind....

cheers,
Rainer
--
Rainer Duffner
CISSP, LPI, MCSE
rainer@ultra-secure.de

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To: Rainer Duffner <rainer@...>
Cc: <freebsd-current@...>
Date: Monday, December 17, 2007 - 10:08 am

They probably can't - their technology is much slower. This is why I
was concentrating on fiding a seek-intensive load which doesn't depend
much on raw bandwidth :)
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