http://assetform.dellhpcsolutions.com/download/L2ltYWdlc3ZyX2NlLzIwNzAvZGVsbC0wMDgwLURlbGwgSFBDIE5GUyBTdG9yYWdlIFNvbHV0aW9uLnBkZg==
http://www.dell.com/learn/us/en/04/hpcc/storage-dell-nss
http://i.dell.com/sites/doccontent/shared-content/data-sheets/en/Documents/PowerVault_MD_specsheet.pdf
Dell Fluid Cache for DAS:
http://i.dell.com/sites/doccontent/shared-content/data-sheets/en/Documents/Improving.pdf
http://www.dellstorage.com/WorkArea/DownloadAsset.aspx?id=3441
http://www.storagereview.com/dell_fluid_cache_overview
http://www.theregister.co.uk/2013/03/05/dell_fluid_cache_server_acceleration/
Solution:
- Two commodity Intel servers running Red Hat Linux (active/passive) with NFS
- Shared SAS Storage
- Red Hat Clustering
Low cost Dell MD3260 with 240TB, 60 x 4TB 7.2K SAS drives is $64,514.70:
The Dell MD3260 can be expanded with up to two MD3260e expansion drawers, each with 240TB, 60 x 4TB 7.2K SAS drives at $51,091.50:
Performance on a MD3260 with one MD3060e expansion array is reasonable for a low cost, high capacity storage array, but could be further improved by using SLC based SSDs:
In case of failure of one NFS server, the clustering software will activate NFS on the the failover server in 30-60 seconds. This should be fine with vSphere parameters: NFS.HeartbeatFrequency, NFS.HeartbeatDelta, NFS.HeartbeatTimeout and NFS.HeartbeatMaxFailures can be tuned:
http://cormachogan.com/2012/11/27/nfs-best-practices-part-2-advanced-settings/
Above is great for high availability at one site, but how would you would you achieve DR to another geographical site? Here are some good vSphere alternatives:
- vSphere replications (introduced in vSphere 5.1):
- Zerto:
- Veeam Backup/Replication
Update 19/10/2013:
Dell also sell this as completely integrated solution as their NAS NX3610
http://www.dell.com/us/business/p/powervault-nx3600
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