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mirroring OS drive

New installs of XigmaNAS.
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pumo
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mirroring OS drive

Post by pumo »

I just bought and waiting for HP microserver Gen8 for Nas4free.
and read about that in freenas there might be possible to mirror os drive also, so is it possible and/or recommended in Nas4free ?
there is inner microSD and inner USB connector what could be great to use for it (if possible)..

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raulfg3
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Re: mirroring OS drive

Post by raulfg3 »

pumo wrote:and read about that in freenas there might be possible to mirror os drive also, so is it possible and/or recommended in Nas4free ?
not, possible ( at least in a easy way) & not recomended.

Recommended install is in a USB key and embeded . ( an option in the install menu, that copy an image to your USB key and only read it to load in RAM during start boot process), so your USB key is not "burning " with a lot of writes.
12.1.0.4 - Ingva (revision 7743) on SUPERMICRO X8SIL-F 8GB of ECC RAM, 11x3TB disk in 1 vdev = Vpool = 32TB Raw size , so 29TB usable size (I Have other NAS as Backup)

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armandh
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Re: mirroring OS drive

Post by armandh »

the ease of replacing the OS "medium" and reloading the OS and saved config, makes a mirror of little benefit. [IMHO]
I prefer PATA or SATA industrial flash depending on the MOBO situation.
http://www.logicsupply.com/components/s ... h-modules/
http://www.logicsupply.com/components/s ... h-modules/
I have never had one of these fail.
their rugged industrial quality over consumer USB flash is IMHO preferred to complex mirroring of the boot medium,
an extreme remote location might be an exception.
if one is short of IDE connection points I have successfully tested the PATA flash with an old USB drive case
in any event, always use the embedded OS unless there is a "must" reason for not doing so.
the RAM's higher buss speed makes operating from RAM one less thing to impede the throughput.
Last edited by armandh on 06 May 2015 02:11, edited 2 times in total.
4 thread 3300 Mhz Intel i3, 1 TB ZFS mirror, available RAM 7.823 Gb, 64 bit NAS4Free 9.1.0.1 rev 573 [88 watts, 48 Mbps]
2 thread 1600 Mhz atom/ion, 1 TB ZFS mirror, available RAM 3.083 Gb, 64 bit NAS4Free-9.1.0.1 rev 573 [27 watts, 35 Mbps]
2 thread 3900 Mhz AMD A6-6400K, 2 TB ZFS Mirror, available RAM 7.557 Gb, 64 bit Nas4Free 9.3.0.2.1771 [89 watts, 68 Mbps]

pumo
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Re: mirroring OS drive

Post by pumo »

Ok thanks. I thinked installing to usb old way :-)
And I wasnt even sure how it uses USB...

madpenguin
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Re: mirroring OS drive

Post by madpenguin »

What I have done to install the OS to a gmirror partition is to follow FreeBSD practices of creating gmirror boot, root & swap partitions ( I used regular SATA drives)
After creating the gmirrors I copied the OS from a previously installed USB drive. I needed to do this because I have a very custom (modified) OS. I have tweaked samba to work with specifics of our AD, so a regular NAS4Free installer wont recover or save me from disaster.

I done this a year ago so i need to retrace my steps, but I'll be posting the detailed steps I took.

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raulfg3
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Re: mirroring OS drive

Post by raulfg3 »

your post are wellcome, but as you say only for very specific need ( it's not recomended to use a modiffied version of n4f, but some special or power user can do, because have enought knowledge to do).
12.1.0.4 - Ingva (revision 7743) on SUPERMICRO X8SIL-F 8GB of ECC RAM, 11x3TB disk in 1 vdev = Vpool = 32TB Raw size , so 29TB usable size (I Have other NAS as Backup)

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