Category Archives: Platforms

Will this tin can work with my raid card?

The world has gone more than a little crazy in the hard drive department these days. Unless you are a major OEM you are probably having difficulty getting hold of your preferred hard drives to build your server. Nearline Enterprise … Continue reading

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The dangers of performance testing …

I spend a lot of my time talking to people about RAID performance numbers. Almost everyone as their own bent on this subject, and many organisations have specific tests they run against hardware to “check” performance. The real problem is … Continue reading

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When the small things in life matter …

Quite some time ago Adaptec released a technology called “Hybrid RAID”. This is the combination of an SSD and a spinning disk in a RAID1 or RAID10 array. Initially it was a little unclear as to who would use this … Continue reading

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How to make things fast …

I recently returned from one of my overseas jaunts (country will remain unnamed to protect the innocent) … where I found a general attitude towards making things go fast. That was … use 15K SAS drives. Simple as that. Don’t … Continue reading

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5EE – is anyone actually using this RAID level? …

Several years ago Adaptec adopted the 5EE RAID level as a standard component of our hardware RAID cards. It seemed like a very good idea – making use of the idle drive that was traditionally a hot spare. However, as … Continue reading

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Measuring performance (in the modern server world) …

In days gone by measuring performance was easy – Mb/sec (megabytes per second) was all anyone was really interested in. However measuring performance this way is only suited to systems where you are pushing large amounts of data through the … Continue reading

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Changing the default task priority …

Have you ever wondered why rebuilds take so long. Maybe it’s because you have 24 x 3tb drives in a RAID6 with 2 failed drives, or maybe it’s because the default task priority is set to low. You can set … Continue reading

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You did what with a mirror?

In days gone by if someone mixed a SAS (fast) drive with a SATA (slow) drive in a mirror us tech guys would generally smile to ourselves, pat the customer comfortingly on the head and make for the nearest exit … Continue reading

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Which drive to use?

Question to the Storage Advisors: We are setting up a small RAID6 on a dedicated server with 5 drives initially (it may be expanded later). The array will store mostly video content and will serve a maximum of 2-3 clients … Continue reading

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What the spare?

Had a question the other day from a customer panicking about his hot spare situation. He was running a RAID 1E on 3 drives with a hot spare in a small database server – very sensible. As is the way … Continue reading

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