Re: one brick vs multiple brick on the same ZFS zpool.

[Dung Le <vic_le@xxxxxxxxxx>]

Hi,

How about hardware raid with XFS? I assuming it would be faster than ZFS raid since it has physical cache on raid controller for reads and writes.

Thanks,

On Mar 6, 2017, at 3:08 PM, Gandalf Corvotempesta <gandalf.corvotempesta@xxxxxxxxx> wrote:

Hardware raid with ZFS should avoided

ZFS needs direct access to disks and with hardware raid you have a controller in the middle

If you need ZFS, skip the hardware raid and use ZFS raid

Il 6 mar 2017 9:23 PM, "Dung Le" <vic_le@xxxxxxxxxx> ha scritto:

Hi,

Since I am new with Gluster, need your advices. I have 2 different Gluster configuration:

Purpose: Need to create 5 Gluster volumes. I am running the gluster version is 3.9.0.

Config #1: 5 bricks from one zpool

• 3 storage nodes.
• Using hardware raid to create one array with raid5 (9+1) per storage node 
• Create a zpool on top of the array per storage node
• Create 5 ZFS shares (each share is a brick) per storage node
• Create 5 volumes with replica of 3 using 5 different bricks.

Config #2: 1 brick from one zpool

• 3 storage nodes.
• Using hardware raid to create one array with raid5 (9+1) per storage node
• Create a zpool on top of the array per storage node
• Create 1 ZFS shares per storage node. Using the share as brick.
• Create 5 volumes with replica of 3 with same share.

1) Is there any different on the performance on both config? 

2) Will the single brick be handling parallel writing vs multiple brick?

3) Since I am using hardware raid controller, any option that I need to enable or disable for the gluster volume?

Best Regards,

~ Vic Le

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