Storage Tiering is nothing new. We use fast 15K RPM disks for high performance applications, slower 10K RPM disks for less demanding applications, and 7.2K RPM SATA disks for archive storage. Recently, solid state disks (SSDs) have also become more common for really high performance needs. The trick is managing it all. Two or…

While the data sheet claims support for Solaris, there are several caveats which I have run into.

1. There is no mention of ZFS support in the data sheet and apparently, there is no support in the software either. One would expect this to be a non-question since ZFS has been part…

When discussing availability of a service, it is common to hear the term “Five Nines” referring to a service being available 99.999% of the time but “Five Nines” are relative.
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In reality, none of those calculations are relevant because no one cares if a service is unavailable for 10 hours, as long as they…

The following table shows the difference between 146GB RAID 5 IOPS/TB and 300GB RAID 10 IOPS/TB.
Each column represents a different Read percentage (the Write percentage is the inverse).
Negative numbers mean that for this Read percentage and IOPS requirement, RAID 10 gives more IOPS/TB of disk. Positive numbers mean that RAID 5 gives better…