----- "Ian D" <rewar...@hotmail.com> skrev:
Hi! We're building our first dedicated ZFS-based NAS/SAN (probably using Nexenta) and I'd like to run the specs by you all to see if you have any recommendations. All of it is already bought, but it's not too late to add to it. Dell PowerEdge R910 2x Intel X7550 2GHz, 8 cores each plus HyperThreading 256GB RAM 2x 4GB DDRDrive X1 (PCIe) in mirror for the ZIL 8x 100GB Samsung SS805 SSDs for the L2ARC (on an onboard PERC H700 controller) 2x PERC H800 and 2x PERC6 controllers for the JBODs below 11x Dell MD1000 JBODs with: 45x 750GB SATA HDDs 30x 1000GB SATA HDDs 60X 300GB SAS 15K HDDs 30x 600GB SAS 15K HDDs 2x 10GbE ports We plan to connect about 30 servers to it. About 8 will be currently I/O-bound MySQL databases with a 60/40 read bias, the rest will have much lighter usage. Most connections will be through iSCSI. Is there anything that seems out of proportion? Where do you think the bottleneck will be? If I'm going to use the SAS 15K drives for databases and the SATA drives for NFS/backups, how should I setup the pools? For the DB pools, I'd say use RAID10. For the backup areas, RAIDz2 groups with something like 8-10 drives in each should be ok. For high write, 4GB ZIL might be a little low, and you have probably way too much CPU for just NAS/SAN. Remember to leave a few disks for spares (1-2 of each size?). Apart from that, it looks like you may save some rack space by getting new (consumer) 2TB drives, but that's your choice :) Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med fremmed opprinnelse. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk.
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