RAID
From Sigmon
RAID, RAID/md
Contents |
Summary
| Date Purchased | Date Decom | Generation | Disk Size/Count | Total Raw Capacity | Formatted Capacity | cost/gb | Notes |
|---|---|---|---|---|---|---|---|
| Mar 2005 ? | ? | 1st, grapefruit | 4x 250G IDE 7200RPM | 1TB | 691G | $0.52 | #Grapefruit |
| Apr 2007 ? | ? | 2nd, papaya | 5x 500GB SATA 7200RPM | 2.5TB | 1.8TB | $0.38 | #Papaya |
| Feb 2009 ? | ? | 3rd, watermelon | 5x 1TB SATA 7200RPM | 5TB | 3.6TB | $0.10 | #Watermelon |
| 4th, pineapple | 5x 2TB SATA | 10TB | $0.03 Sig 20:23, 22 May 2011 (UTC) | #Pineapple |
Theme
Next possible names..
- Clementine
- cantaloupe
- kiwi
- orange
- apricot
- watermelon
- grapefruit
- grape
- blueberry
- cranberry
- banana
- plum
- lemon
- apple
- avocado
- tomato
- apple
- fig
- pear
Space Calculations
ext2/3 file system overhead claims to be 10% of available raw capacity. ie, RAID5 Configuration for 3rd generation `watermelon` setup:
TOTAL_DRIVES=5 PARITY_DRIVES=1 DRIVE_SIZE=1000 # GB
RAW_CAPACITY = DRIVE_SIZE * (TOTAL_DRIVES-PARITY_DRIVES) FS_OVERHEAD = RAW_CAPACITY * 0.10 FORMATTED_SIZE = RAW_CAPACITY - FS_OVERHEAD
RAW_CAPACITY FS_OVERHEAD FORMATTED_SIZE
NOTE RAW_CAPACITY is available space w/o a file system (N-1)
History
Grapefruit
- RAID V1 - 4x 250GB, Maxtor drives IDE
Papaya
- RAID V2 - 5x 500GB, Seagate Barracuda 7200.10 ST3500630AS 500GB Serial ATA 7200RPM Hard Drive w/16MB Buffer
Watermelon
- RAID V3 - 5x 1TB, Seagate Barracuda 7200.11 ST31000333AS 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
Pineapple
- RAID V4 - TBD
XXX
Projections
Sigmonsays 06:00, 15 November 2010 (UTC)
history demonstrates it generally doubles every two years..
2011 2000 GB
2013 4000 GB
2015 8000 GB
...
Current Status
Enclosures
- iomega 35439 8TB StorCenter ix4-200d Network Storage, Cloud Edition 8TB
