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Comment: Re: What's the point? (Score 1) 170

by rickb928 (#48939015) Attached to: Microsoft Launches Outlook For Android and iOS

The plan where I work is to roll out first IOS and then Android apps to securely run corporate email, calendar, etc (?) Over the VPN. Then kill the BES servers.

Security is a very big deal here. That's why the mobile apps are taking so long to be finished. BES is no longer worth the money, and we all want to use our own phone anyways.

Comment: Re:Service call? (Score 2) 253

Yes we have, if the array is installed in your backup corporate PKI server, in a shielded and locked cage with video, electrostatic, and laser monitoring and alarms. And the keys to the cage are in another state. And it requires EVP approval to deliver the keys to the authorized tech for a flight to the DR site to change a failed drive.

A real world example. You would recognize the name of this corporation in the first three letters. They take their corporate security very seriously, so much so that bumping into the cage earned you a visit from armed security, an escort out, and full debriefing until they were satisfied you would never take the cart with the stuck caster again...

Comment: Re:Ignores how disks often fail (Score 1) 253

This from an NEC white paper in 2008:

"A recent academic study [1] of 1.5 million HDDs in the NetApp database over a 32 month period found that 8.5% of SATA disks develop silent corruption. Some disk arrays run a background process to verify that the data and RAID parity match, a process which can catch these kinds of errors. However, the study also found that 13% of the errors are missed by the background verification process. When you put those statistics together, you find on average that 1 in 90 SATA drives will experience silent data corruption not caught by the background verification process. So when those data blocks are read, the data returned to the application would be corrupt, but nobody would know. For a RAID-5 (4+P) configuration at 930 GB usable per 1 TB SATA drive, that calculates to an undetected error for every 67 TB of data, or 15 errors for every petabyte of data. If a system were constantly reading all that data at 200 MB/sec, it would encounter an error in less than 100 hours."

Sometimes, I just want to weep.

Comment: Re:4 years??? (Score 1) 253

4 years was my recommendation for disk replacements from about 198 onwards. Some arrays had drives >8 years old, but if failure was not tolerated, 4 years was enough.

Mind you, if the customer specified IDE drives, I warned them that failure was inevitable. SCSI 10K drives, I would still swap but that was for five-nines.

And those stupid IDE RAID cards, well, that's too cheap. We are no longer talking reliable. Let someone else have that business.

Entropy requires no maintenance. -- Markoff Chaney

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