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zfs cache

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tobiasgardner
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zfs cache

Post by tobiasgardner »

Hi,

I have a 16G USB3 mem stick... Is it any idea to add this as a cache device to my ZFS stripe? Or is it to big risk that the quality of a mem stick will degrade quickly and risk corrupting my data?

Can I pinpoint which directories / files that I would like the cache to focus on?

Regards, Tobbe G
NAS4FREE 9.0.0.1 (rev 175), Asus E-45M1-Deluxe, 8GB, 16GB USB3 as boot device
1) 3x 3TB in RaidZ1
2) 2x 500GB in RAID 1 - weekly backup of selected data from 1)
3) 1x 1TB external USB HDD - used for offsite backup of 2)
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raulfg3
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Re: zfs cache

Post by raulfg3 »

not tested, but googling a bit:
http://forums.freebsd.org/showthread.php?t=25430

http://forums.freenas.org/archive/index.php/t-7189.html

take your own conclusion and if test it, please share your result.
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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BeNooL
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Re: zfs cache

Post by BeNooL »

I use the USB key as ZFS cache but set it to be only a metadata cache. This already speeds up directory access when browsing or performing searches.
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