Rack mounted RAID5 for ~ 1 TB storage

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Discussion Overview

The discussion centers around setting up a rack-mounted RAID5 system for approximately 1 TB of storage. Participants explore various hardware options, configurations, and considerations for achieving this setup, including the use of different types of hard drives and RAID management strategies.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Exploratory

Main Points Raised

  • One participant suggests using a rack-mounted computer case with gigabit ethernet and proposes a configuration of 5x300GB hard drives in RAID5 to achieve around 1.2 TB of usable storage.
  • Another participant mentions options like Ultra320 SCSI, Ultra160 SCSI, and Fibre Channel, and suggests a Sun A5200 with an Emulex Fibre card as a cost-effective solution under $1.5k.
  • There is a question about the price range for the setup and whether the participant prefers software or hardware volume management.
  • A suggestion is made to consider larger SATA drives to reduce the number of disks in the array, citing the lower mean time between failures (MTBF) for SATA and IDE drives compared to SCSI or Fibre drives.
  • Another participant emphasizes that having more disks in an array can decrease the overall MTBF due to increased heat and vibration, potentially leading to more frequent drive failures.

Areas of Agreement / Disagreement

Participants express various viewpoints on the types of drives and configurations to use, indicating that multiple competing views remain regarding the best approach for setting up the RAID5 system.

Contextual Notes

Participants discuss the implications of drive type on reliability and performance, highlighting the importance of MTBF in the context of RAID configurations. There are unresolved considerations regarding the trade-offs between speed, reliability, and cost.

aychamo
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Hey guys

What do you think would be the best solution for setting up a rack mounted RAID5 for ~ 1 TB of storage

What I'm thinking is a rack mounted computer case with a precent decent computer in it with gigabit ethernet. I'd like to have the computer with it's storage as a stand alone entity so that I could just hook it up as a network share.

Hot-swappable would be great. Perhaps 5x300gig HD, set up in RAID5 to give 4x300 = 1.2 TB. Does anyone have any suggestions for gear, etc?

Thank you kindlyl
 
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aychamo said:
Hey guys

What do you think would be the best solution for setting up a rack mounted RAID5 for ~ 1 TB of storage

What I'm thinking is a rack mounted computer case with a precent decent computer in it with gigabit ethernet. I'd like to have the computer with it's storage as a stand alone entity so that I could just hook it up as a network share.

Hot-swappable would be great. Perhaps 5x300gig HD, set up in RAID5 to give 4x300 = 1.2 TB. Does anyone have any suggestions for gear, etc?

Thank you kindlyl

Well, there's lots of options.

Ultra320 SCSI, Ultra160 SCSI (if you want to save some cash), and Fibre Channel if your in between. You can pick up a Sun A5200 loaded with drives (1 TB total) and an Emulex Fibre card to hook up to a system that will be doing the file serving and RAID 5 for a relatively cheap amount, definitely under $1.5k.

Can you give some sort of price range?

Also, are you willing to go for software or hardware volume management?

SATA is always an option, too, if you're willing to sacrifice speed and reliability.
 
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For a R-mounted system like you suggested, I'd generally agree with what graphic7 said. Of course, if you really want to go budget, you can always just pick up some of either the Maxtor 300GB or Seagate's 400GB SATA drives and do it that way.
 
If you do plan on going the SATA route, buy larger disks so that the array will have less disks. The reason for this is that the MTBF (mean time between failures) is much less on SATA and IDE drives than their SCSI or fibre counterparts. The reason the MTBF is important is because it tells you how long it takes the drive to fail on average, of course. On a side note, the more disks you typically have in an array, the MTBF (because of heat and vibration) tends to drop. A drive might qualify for 700,000 hours; however, if you create an array with 1000 of those drives, you might be expecting 1 drive failure every month or so.
 
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