Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-04-12 Thread Bayard Bell
Jason, If you think I've said anything about the sky falling or referenced a wiki, you're responding to something other than what I wrote. I see no need for further reply. Cheers, Bayard On 11 April 2014 22:36, Jason Belec jasonbe...@belecmartin.com wrote: Excellent. If you feel this is

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-04-12 Thread Peter Lai
It sounds like people are missing the forest for the trees. Some of us have been successfully RAIDing/deploying storage for years on everything from IDE vinum to SCSI XFS and beyond without ECC. We use ZFS today because of its featureset. Data integrity checking through checksumming is just one of

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-04-11 Thread Eric
Interesting point about different kinds of ECC memory. I wonder if the difference is important enough to consider for a 20x3TB ZFS pool. For the sake of sakes, I will likely look into getting ECC memory. On Fri, Apr 11, 2014 at 5:36 PM, Jason Belec jasonbe...@belecmartin.comwrote: Excellent.

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-04-02 Thread Eric
All this talk about controller, sync, buffer, storage, cache got me thinking. I looked up out ZFS handles cache flushing, and how VirtualBox handles cache flushing. *According to http://docs.oracle.com/cd/E26505_01/html/E37386/chapterzfs-6.html

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-04-02 Thread Daniel Becker
The only time this should make a difference is when your host experiences an unclean shutdown / reset / crash. On Apr 2, 2014, at 8:49 AM, Eric naisa...@gmail.com wrote: I believe we are referring to the same things. I JUST read about cache flushing. ZFS does cache flushing and VirtualBox

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-04-02 Thread Eric
eh, I suspected that On Wed, Apr 2, 2014 at 2:38 PM, Daniel Becker razzf...@gmail.com wrote: The only time this should make a difference is when your host experiences an unclean shutdown / reset / crash. On Apr 2, 2014, at 8:49 AM, Eric naisa...@gmail.com wrote: I believe we are referring

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-03-02 Thread Philip Robar
On Sun, Mar 2, 2014 at 12:46 AM, Jean-Yves Avenard jyaven...@gmail.comwrote: On 28 February 2014 20:32, Philip Robar philip.ro...@gmail.com wrote: cyberjock is the biggest troll ever, not even the people actually involved with FreeNAS (iX system) knows what to do with him. He does spend an

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-03-02 Thread Philip Robar
On Sat, Mar 1, 2014 at 5:07 PM, Jason Belec jasonbe...@belecmartin.comwrote: Technically, what you qualify below is a truism under any hardware. ZFS is neither more or less susceptible to RAM failure as it has nothing to do with ZFS. Anything that gets written to the pool technically is sound.

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-03-01 Thread Jason Belec
Technically, what you qualify below is a truism under any hardware. ZFS is neither more or less susceptible to RAM failure as it has nothing to do with ZFS. Anything that gets written to the pool technically is sound. You have chosen a single possible point of failure, what of firmware, drive

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-03-01 Thread Philip Robar
On Sun, Mar 2, 2014 at 12:46 AM, Jean-Yves Avenard jyaven...@gmail.comwrote: Back to the OP, I'm not sure why he felt he had to mentioned being part of SunOS. ZFS was never part of sunos. I didn't say I was part of SunOS (later renamed to Solaris 1). SunOS was dead and buried years before I

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-02-28 Thread Richard Elling
On Feb 28, 2014, at 1:32 AM, Philip Robar philip.ro...@gmail.com wrote: On Thu, Feb 27, 2014 at 11:42 AM, Bill Winnett bill.winn...@gmail.com wrote: Why is this a zfs issue. This is a ZFS issue because ZFS is advertised as being the most resilient file system currently available;

Re: [zfs-macos] ZFS w/o ECC RAM - Total loss of data

2014-02-27 Thread Richard Elling
On Feb 26, 2014, at 10:51 PM, Daniel Becker razzf...@gmail.com wrote: Incidentally, that paper came up in a ZFS-related thread on Ars Technica just the other day (as did the link to the FreeNAS forum post). Let me just quote what I said there: The conclusion of the paper is that ZFS does