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Suggestions For Reeldisk, my hard drive went. I need some info |
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Sat 18 Jun 2005, 19:38
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Moderator
Group: Team
Posts: 370
Joined: 19-Mar 03
From: Umeå - SE
Member No.: 14,645
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Costs: Seagate & Maxtor make good drives - the prices between various comparable models are not very great.
For a some kind of raid array you'll need at least two drives minimum. 3 if you you go raid level 5.
If you go to raid level 5 or above you'll need a raid controller card for either parallel ata or serial ata.
If you choose to go SCSI (very expensive) you'll get very good durable drives with less storage area. Also SCSI raid controllers are more expensive than serial or parallell ata raid controllers.
Raid Level 0 == striped array means two 120Gbyte drives gives 240Gbyte storage very good performance writing and reading data. However if one drive goes down the whole array is hosed - and your data is gone gone.
Raid level 1 == mirrored array all is data written/read duplicated on two drives. Two 120 Gbyte drives equals 120Gbyte storage. Very slight performance enhancement reading & writing data. But if one drive goes down the array is still functional - your data is still ok for a while.
Raid level 5 means three drives + generally a separate raid controller card. Three 120Gbyte drives give you 240 Gbyte storage & very good safety. If one drive goes down you just swap the faulty one and data is reconstructed back to the new drive. Very good reading performance medium write performance. Write performance is generally enhanced through smart cache-schemes and saundry algorithms in the raid controller.
Cheers: Dixiechicken
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