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Forum Discussion
Veem with ReadyNAS 4220
I am about to change our backup storation solution for our virtualized environmnet. I have a few options but one that seems more suited for us is to marry the veem backup with a ReadyNAS 4220. I ha...
Shocked that no one has done this and can shed some light on this subject.
Hi. I have lots of experience running Veeam against ReadyNAS OS 6.
My recommendation is create a thick iSCSI LUN no larger than 80% of the total volume space. Turn off bit rot protection, turn off snapshots, turn off sync writes. Mount the iSCSI LUN to your machine running Veeam.
Only use the NAS for Veeam and not other backups.
Schedule volume maintenance: defrag for Saturday mornings and balance for Sunday mornings to keep the file system healthy. Make sure these run when the unit is not doing backups.
Thanks much for your reply. I was under the impression that altought the new appliances don't have LUN size limiations, the local OS will not allow larger sizes then 8T. The one I am looking is the 3220S series readynas. I plan on using the readyNAS just for DR. However, I have a fileserver that i need to keep several weeks of backup. I know Veem does granulary backup but will it sync correctly? And finally, sounds like a full time job to maintain the appliance for a DR solution. Can you provide more information as to why I should warry about the volume maintenance and system health? I do it anyway with my vcenter but I was hoping for more of a "set it an forget it" option.
Thanks much for your help on this.
From our Release notes: ReadyNAS 102, 104, and 2120 only support creating iSCSI LUNs 8TB and smaller.
ReadyNAS 3220 supports creating larger than 8 TB iSCSI LUNs. NTFS supports 256 TB total FS size. Pick 64KB block size when formatting.
When you buy yours, upgrade to the latest firmware and factory default again on the latest to make sure you take advantage of all the latest benefits of a fresh filesystem.
Can you help me understand what "sync correctly" means?
Disaster Recovery is a fulltime job :P You should always test backups regularly to ensure they're of good quality and even have backups of backups. (Putting all your backups on one system is not a backup).
The underlying file system in ReadyNAS OS 6 is btrfs, which is a copy on write file system. The write patterns are important for continued success. The file system can accumulate a large number of extents on your iSCSI LUN. The volume maintenance helps keeps these extent numbers small (good number is between 1 and 10). Realistically, your iSCSI LUN could get as large as 1,000,000 extents, which would not only consume more than a terabyte of fragmentation but could leave your backup server crippled and operating extremely slow, something you don't want your backup server.
Volume maintence is schedulable from the UI, which is like a set it and forget it option you use in vCenter.Thanks again for your quick reply. Agreed with most. My biggest fear is having to marry two items that perhaps were not meant for each other. Much like my marriage:)
For example, Veem uses vss to stop temporary services to take a quick vm snapshot. This snapshot is than transferred to the storage (more or less). That is nice when all you want is vm backup. However, I have a 1 ½ T fileserver that veem will do granularly backup. This means I will have to do dedupping inside the vm. I know veem recommends such large blocks to be backed up on the local disk. However replication has to take place to move data from production storage to readyNAS. (Perhaps I shouldn’t have but here is where I was referring to sync). I am not convinced that veem will do this with readyNAS effectively. It takes serious horse power to perform this task. After all the 3220S is a JBOD. Since you mentioned I should use the readyNAS just for the vm backups, should I put the fileserver backup elsewhere?
Glad to know that the 3220S will support larger block LUNs.
In the old days DR was. But if it becomes a full time job now, then something is wrong. I don’t know how often others are doing DR recovery. Obviously depends on the business critical, systems mission critical but more so on the budget.
The underlying file system in ReadyNAS OS 6 is btrfs, which is a copy on write file system. You mean butterface:)!!! Any chance for some white paper on Veem and readynas I could get my hands on? Spending serious cash on something that might work, it is not my idea of picking up a DR solution. On paper, yah all seems possible but hardly every works in practice. Are you currently maintaining such marriage? Would Netgear support it?
Thanks again kohdee. Your help is most appreciated.
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