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> While this is true, it also may dramatically lower the mean time to |
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> failure for your disk, due to increased ware and tear - consumer ATA |
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> drives are designed to operate with the write cache on. |
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> |
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> If you cannot afford to lose data due to poweroff corruption, then the |
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> only viable solution is a RAID card that includes battery backup (e.g. |
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> 3Ware and Areca sell these). |
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> |
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Mark, |
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Thank you for clarifying. My comments were obscure and poorly |
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worded. You are correct. If one requires supreme data-safety with an |
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ATA drive, one must do things that will ultimately be |
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counter-productive for the longevity of your disks. Furthermore, (I |
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can fully attest) that they will be a significant hit on performance. |
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|
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If you need high safety, speed, and retention, then the 3ware + |
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Battery backup is a low-cast solution. There are tons of higher cost |
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ones. most of me servers run with battery-backed RAID cards. |
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I also like to make scripts to remount the FSs with -o sync in the |
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case of power outage. That way, just in case the UPS actually fails |
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early (which happens at times), I don't lose data. I have had that |
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preference no matter what FS i use. |
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|
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sincerely, |
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Joshua |
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-- |
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