I'm building out a box with a good deal of storage for use as the iSCSI backend to a VMware cluster ... I did this once before and the guidance I got from here was extremely beneficial - unfortunately, the last system I built has been outgrown.
Basic build here is big but straight forward:
The disks will be configured in 3-way mirrors yielding a final usable pool of 36TB, and an iSCSI volume of 18TB (all rough numbers). The main question is, will the 6TB disk mirrors kill the performance? Last time I went with 2TB disks to improve the performance, but there would be so many disks involved here, that the smallest disks I could really consider are 4TB.
I also considered an SSD backed RAIDz scenario ... but, I wasn't sure the performance would be there, plus, I don't think it could be extended as easily. Feel free to correct me.
Also, feel free to tell me I'm going about this all wrong and asking for trouble, I'm open to suggestions from the resident experts. Nothing is bought yet, so I can go a completely different direction.
Thanks
Basic build here is big but straight forward:
- At least 8 cores in the CPU
- 128GB Memory
- (2) 10GB SFP+ uplinks
- (2) 240GB 6GB/s SATA SSD for OS
- (2) 1.92TB PCIe M.2 NVMe SSD L2ARC
- (2) 480GB 6GB/s SATA SSD ZIL
- (18) 6TB 12GB/s SAS Spindles for the ZFS pool
The disks will be configured in 3-way mirrors yielding a final usable pool of 36TB, and an iSCSI volume of 18TB (all rough numbers). The main question is, will the 6TB disk mirrors kill the performance? Last time I went with 2TB disks to improve the performance, but there would be so many disks involved here, that the smallest disks I could really consider are 4TB.
I also considered an SSD backed RAIDz scenario ... but, I wasn't sure the performance would be there, plus, I don't think it could be extended as easily. Feel free to correct me.
Also, feel free to tell me I'm going about this all wrong and asking for trouble, I'm open to suggestions from the resident experts. Nothing is bought yet, so I can go a completely different direction.
Thanks