Comprehensive data protection for all workloads
Post Reply
JamesieA
Influencer
Posts: 13
Liked: never
Joined: Oct 09, 2019 10:54 am
Full Name: james Allcock
Contact:

iSCSI on QNAP Devices

Post by JamesieA »

Has anyone configured a ReFS drive on a Windows server from an iSCSI target on a QNAP NAS?

We're currently backing up to QNAP devices using SMB shares, but are looking to move to iSCSI to take advantage of ReFS. Reading Veeam's best practices, I've had no problems in formatting it with 64KB block size, but I'm not sure about configuring a 256KB block size on the LUN.

The only thing I can find ont he QNAP is the sector size, which can be 512 ​bytes or 4K. Would one be better than the other? Any issues with this setting?
HannesK
Product Manager
Posts: 15564
Liked: 3434 times
Joined: Sep 01, 2014 11:46 am
Full Name: Hannes Kasparick
Location: Austria
Contact:

Re: iSCSI on QNAP Devices

Post by HannesK » 1 person likes this post

Hello,
the block size of the LUN has very little impact on the overall speed. If the option is not available, the defaults are fine (no need to tune / search for that setting).


Best regards,
Hannes
pbxman88
Lurker
Posts: 1
Liked: never
Joined: Sep 15, 2025 6:27 pm
Full Name: David James Eckert
Contact:

Re: iSCSI on QNAP Devices

Post by pbxman88 »

JamesieA did you ever get an answer to this as I am trying to do the same thing.
NXMAG
Service Provider
Posts: 15
Liked: never
Joined: Mar 24, 2021 1:31 am
Full Name: Michael Grocott
Contact:

Re: iSCSI on QNAP Devices

Post by NXMAG »

works fine.

we use a dedicated directly connected 10gb port (9000 MTU) to mount the iscsi target on a windows server. Format the disk with REFS with 64kb block size.

On the qnap, only run the iscsi service on the dedicated network adapter (if you go that way). otherwise make sure you secure it with CHAP.
JamesieA
Influencer
Posts: 13
Liked: never
Joined: Oct 09, 2019 10:54 am
Full Name: james Allcock
Contact:

Re: iSCSI on QNAP Devices

Post by JamesieA »

I didn't get any other info other than the reply from Hannes, so left the LUN with a 4KB sector size and formatted in Windows with 64KB block size. We've seen no issues with that.
Post Reply

Who is online

Users browsing this forum: Bing [Bot] and 39 guests