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Forum Discussion
iSCSI LUN - Unable to use all available disk space
Hello, We have a ReadyNAS 316 Diskless Model that we purchased and added 6 x 6 TB Western Digital Red Hard Drives (compatible as per HCL). A new RAID 0 volume has been created providing us with ...
That's a very risky RAID configuration. If a disk fails all the data is lost.
It's important not to fill your volume too full so we restrict how much space can be used by iSCSI
Welcome to the Community!
Thank You for your quick response.
Regardless of the RAID configuration (X-RAID, RAID 5, RAID 0), you still only allow 90% of the available disk space for new iSCSI LUN's. I am unable to find any documentation that tells us why this is. Disappointed as it may be lead our company to look at other products.
If you fill the volume too full then you will run into performance problems or worse. This true with any filesystem.
We don't allow using more than 90% for iSCSI LUNs due to the unacceptable performance problems this would lead to.
We'd recommend keeping volume usage under 80% and scheduling regular volume maintenance.
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