LimeCrusher
Explorer
- Joined
- Nov 25, 2018
- Messages
- 87
A relative of mine recently became aware of the advantages of ZFS over the RAID arrays he has been using for the last twenty years. After reading about ZFS and checking the user interface and features, he decides to build a 24 disks array in those massive 4U Supermicro chassis. While I am not sure of the exact application he has in mind (backing up some VMs through iSCSI?), here is the hardware list he is considering:
I find it weird that the chassis is being advertised for X10 mobos while he goes for a X11 but I guess it does not matter. The capacity of the mirrored boot drives seems overkill to me but what do I know? I understand he does not want to buy a terabyte of RAM as this is pricey and would prefer to use L2ARC (yes I know you still need RAM just a little less).
Without knowing the exact application, I can't really think of a pool layout that would make sense though. Should he mirror his SLOG or his L2ARC though?
I believe I remember that mirroring one of the two is recommended. If so, he could probably go with a single pool made of three 6-wide RAIDZ2 vdevs with a spare each ( (6+1)*3 + 2 + 1 = 24)?
What are you thoughts?
- Supermicro 4U SuperChassis 846BE1C-R1K28B with a Drive Kit MCP-220-84610-0N,
- Supermicro X11SPL-F motherboard,
- Intel Xeon Bronze 3204 Processor cooled by a Supermicro 2U Active CPU Heat Sink Socket LGA3647-0 (SNK-P0068APS4),
- 2 x 32 Go DDR4-2666 ECC REG from Samsung,
- 2 x SSD 2.5" 480GB SATA SAMSUNG SM883 3DWPD as mirrored boot drives,
- Supermicro Add-on Card AOC-S3008L-L8e as HBA,
- 4 x SSD 2.5" 960GB SATA MICRON 5300 MAX 5DWPD as... mirrored SLOG and L2ARC? Along with their Supermicro MCP-220-00043-0N.
- Either some Western Digital Ultrastar HC310 4TB or 6TB SATA3 7200T, or some HGST HDD 10TB SATA 6Gb/s 7.2K RPM 256M 4Kn ISE Helium (hasn't decided yet).
- a bunch of ugly Mini-SAS SFF8643 to Mini-SAS SFF8643 HD and SFF-8643 to 4x SATA cables...
- a solid UPS used at only 30% capacity of course because come on!
I find it weird that the chassis is being advertised for X10 mobos while he goes for a X11 but I guess it does not matter. The capacity of the mirrored boot drives seems overkill to me but what do I know? I understand he does not want to buy a terabyte of RAM as this is pricey and would prefer to use L2ARC (yes I know you still need RAM just a little less).
Without knowing the exact application, I can't really think of a pool layout that would make sense though. Should he mirror his SLOG or his L2ARC though?
I believe I remember that mirroring one of the two is recommended. If so, he could probably go with a single pool made of three 6-wide RAIDZ2 vdevs with a spare each ( (6+1)*3 + 2 + 1 = 24)?
What are you thoughts?