Difference between revisions of "Hard Drive Sorting"

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[[Category: Prebuild]]
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{{migrated}}
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Hard drive sorting is done in [[System Evaluation]]. There should already be a tub for keepers and a bucket for recyclers.
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[https://docs.google.com/document/d/1E1HKNPjF-dtto-Nm2VroGKd5-mO-5FtmNP9N5tC1YRY/edit?usp=sharing link]
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Hard drive sorting is done in [[System Evaluation]].
  
 
== Sort ==
 
== Sort ==
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There should be a bucket filled with drives to be tossed and a tub filled with drives to be kept. These need to be checked for mistakes. (If the tub or bucket is not there, use your best judgement to figure out which is which and go from there.)
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<graphviz>
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digraph D {
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    node [fontname="Helvetica", fontsize="11"]
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    edge [fontname="Helvetica"]
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start        [label="START HERE",  shape="box", style="bold"]
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ask          [label="ASK",  shape="box", style="bold"]
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ask2        [label="ASK",  shape="box", style="bold"]
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keep        [label="KEEP",  shape="box", style="bold"]
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recycle      [label="RECYCLE",  shape="box", style="bold"]
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recycle2    [label="RECYCLE",  shape="box", style="bold"]
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fiftypinscsi [label="Is it 50 pin SCSI?"]
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scsi        [label="Is it SCSI?"]
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reg_size    [label="Is it 3.5in?\n(regular sized)"]
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big_size    [label="Is it 5.25in?\n(bigfoot sized)"]
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lap_size    [label="Is it 2.5in?\n(laptop sized)"]
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sata        [label="Is it SATA?"]
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ide        [label="Is it IDE?"]
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scsi_cutoff  [label="Is it 140 GB or greater?"]
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ide_cutoff  [label="Is it 40 GB or greater?"]
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lap_cutoff  [label="Is it 6 GB or greater?"]
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start -> sata
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sata -> keep [label="YES"]
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sata -> ide [ label="NO" ]
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fiftypinscsi -> scsi_cutoff [ label="NO" ]
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fiftypinscsi -> recycle [label="YES"]
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ide -> big_size [ label="YES" ]
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ide -> scsi [label="NO"]
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 +
big_size -> reg_size [label="NO"]
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big_size -> recycle [label="YES"]
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 +
scsi -> fiftypinscsi [ label="YES" ]
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scsi -> ask2 [ label="NO" ]
 +
 
 +
lap_size -> lap_cutoff [label="YES"]
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lap_size -> ask [label="NO"]
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 +
reg_size -> lap_size  [label="NO"]
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reg_size -> ide_cutoff  [label="YES"]
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 +
scsi_cutoff -> recycle [label="NO"]
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scsi_cutoff -> keep [label="YES"]
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 +
ide_cutoff -> recycle [label="NO"]
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ide_cutoff -> keep [label="YES"]
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 +
lap_cutoff -> recycle2 [label="NO"]
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lap_cutoff -> keep [label="YES"]
  
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First, check the '''toss bucket''' for ones that should be kept:
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}
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</graphviz>
  
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Put the drives marked 8 GB or bigger keep tub:
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; List of drives to recycle:
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* 3 1/2 inch IDE hard drives marked less than '''40 GB'''
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* 2 1/2 inch IDE hard drives marked less than '''6 GB'''
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* 5 1/4 inch IDE hard drives, regardless of capacity ''(these are known as "Bigfoot" drives)''
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* SCSI drives marked less than '''72 GB'''
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* 50 pin SCSI drives
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* MFM hard drives ''(very old, see example)''
  
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Next, check the '''keep tub''' for ones that should be recycled:
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; List of drives to keep:
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* 3 1/2 inch IDE hard drives marked '''40 GB or bigger'''
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* SCSI drives marked '''140 GB or bigger'''
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* 2 1/2 inch IDE hard drives marked '''6 GB or bigger'''  
  
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Create a temporary place for a recycle pile and put hard drives marked under 8 GB in it.
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; When in doubt keep the drive.
  
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Put all the recyclers in the bucket and all the keepers in the tub.
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; Steps when Sorting
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# First, check the '''recycle''' crate for drives that should be '''kept''':
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# Then check the '''incoming'''  crate for drives that should be '''kept or recycled''':
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# Put any keepers in the TARDIS in the incoming drive area (near the door).
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# Destroy any recyclers using the '''hard drive crank'''.
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#* Ask someone in charge to check them before destroying the "recyclers" (even if you think you know how), and ask about the ones you think you want to keep.
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# Stack recyclers in the crates. When crates are 75% full, put them on the cart to go to the warehouse.
  
 
== How to tell a hard drive's capacity ==
 
== How to tell a hard drive's capacity ==
 
Many hard drives are marked with their capacity. The words might be very small, but they're usually there. Look carefully for them. If that doesn't work:
 
Many hard drives are marked with their capacity. The words might be very small, but they're usually there. Look carefully for them. If that doesn't work:
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;Multiply the clyinders, heads and sectors
 
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:Check the drive geometry (cylinders, heads, sectors) information. The forumula is (CxHxS)/2000.  If heads and sectors are 16 and 63, 16x63=1008, which is :about 1000, so Cx1000/2000=C/2.  In other words, half the number of clyinders is usually the approximate size (some newer drives can fit more data in the :same geometry, you can check the model number described below to find those drives but they will be big enough to be kept even if you use the smaller size :you get using this trick).
 
  
 
; Look for double labeled drives
 
; Look for double labeled drives
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: Try [http://google.com/ googling] the model number and see if anything turns up.
 
: Try [http://google.com/ googling] the model number and see if anything turns up.
  
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== Where to put them ==
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* Hard drives in the Recycle bucket go straight to Recycling after they are signed off by the Eval instructor and suitably '''whacked, drilled or squished'''.
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* Good Hard Drives go into the TARDIS
  
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== Jumpering the Hard Drives ==
 
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Keepers should be jumpered to "single" or "stand alone" if such a setting is available. Otherwise, they should be jumpered to "master".
 
  
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Western digital drives (and some others) differentiate between single (or standalone) and master. On most western digitals, no jumpers (or the jumper in the parking position) is the single setting and is what is preferred at Free Geek.
 
  
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== Where to put them ==
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[[Category: System Evaluation]]
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* Hard drives in the Recycle bucket go straight to Recycling after they are signed off by the Eval instructor. There is no need to receive or label them.
 
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* Good Hard Drives go into the TARDIS (Build Office).
 

Latest revision as of 16:48, 5 July 2014

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Information remaining behind may no longer be relevant.

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link

Hard drive sorting is done in System Evaluation.

Sort

This is a graph with borders and nodes. Maybe there is an Imagemap used so the nodes may be linking to some Pages.

List of drives to recycle
  • 3 1/2 inch IDE hard drives marked less than 40 GB
  • 2 1/2 inch IDE hard drives marked less than 6 GB
  • 5 1/4 inch IDE hard drives, regardless of capacity (these are known as "Bigfoot" drives)
  • SCSI drives marked less than 72 GB
  • 50 pin SCSI drives
  • MFM hard drives (very old, see example)
List of drives to keep
  • 3 1/2 inch IDE hard drives marked 40 GB or bigger
  • SCSI drives marked 140 GB or bigger
  • 2 1/2 inch IDE hard drives marked 6 GB or bigger
When in doubt keep the drive.
Steps when Sorting
  1. First, check the recycle crate for drives that should be kept:
  2. Then check the incoming crate for drives that should be kept or recycled:
  3. Put any keepers in the TARDIS in the incoming drive area (near the door).
  4. Destroy any recyclers using the hard drive crank.
    • Ask someone in charge to check them before destroying the "recyclers" (even if you think you know how), and ask about the ones you think you want to keep.
  5. Stack recyclers in the crates. When crates are 75% full, put them on the cart to go to the warehouse.

How to tell a hard drive's capacity

Many hard drives are marked with their capacity. The words might be very small, but they're usually there. Look carefully for them. If that doesn't work:

Look for double labeled drives
Some drives have two labels. One generic label lists several different capacities and/or disk geometry. The other label is model specific and lists the model number. For instance one label might say:
MPC3032AT (3.24GB)
MPC3043AT (4.32GB)
MPC3064AT (6.48GB)
MPC3084AT (8.45GB)
MPC3096AT (9.74GB)
The other label says:
Model MPC3032AT
The drive is a 3.24 GB drive
Look for model number schemes
Some model numbers contain a hint as to the capacity of the drive. For instance, the western digital drives can usually be deduced by dropping the first digit in the model number. In the example above MPC3032AT is approximately a 3.2 GB drive and MPC3043AT is approximately a 4.3. Thus we can determine that the third and fourth digit in the four digit number is the drive size. By comparing similar models, you might be able to determine the probable sizes.
Google is your friend.
Try googling the model number and see if anything turns up.

Where to put them

  • Hard drives in the Recycle bucket go straight to Recycling after they are signed off by the Eval instructor and suitably whacked, drilled or squished.
  • Good Hard Drives go into the TARDIS
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