xdisk is a temporary storage allocation available to all PIs and offers up to 20 TB of usable space for their group for up to 300 days. PIs may only have one active xdisk at a time. A PI can request an allocation either via the command line or through our web portal (no paperwork necessary!). Only faculty members (PIs) may request, alter, or delete an allocation from the command line. Members of their research group may be delegated management rights allowing them to manage a group's xdisk on their PI's behalf through our web portal. Once an xdisk allocation is created, it is immediately available for use. Groups can find their allocations under /xdisk/pi_netid . By default, a subdirectory is created for each group member under /xdisk/pi_netid/netid . If a group member is added after the allocation is created, a directory is not automatically created for them. To add one, reach out to our consultants.
Because xdisk allocations are temporary, they will expire as soon as their time limit is reached. Warnings will be sent to every group member at their netid@arizona.edu addresses beginning one week before the expiration. It is the group's responsibility to renew xdisk allocations or copy files to an alternate storage location prior to the expiration date. Once an xdisk allocation expires, everything in it is permanently deleted. PIs may request a new xdisk allocation immediately after their previous one has expired. This ensures groups will always have access to increased storage on HPC on a rolling basis with the requirement that housekeeping be done once per academic year.
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startHidden | false |
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id | request-delete-modify |
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default | true |
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title-old | Requesting an xdisk Allocation |
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id | request |
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label | Requesting an Allocation |
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title | Requesting an Allocation |
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| Note |
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If a group has an active xdisk allocation, a new one cannot be created until the active allocation expires or is deleted. |
PIs or delegates can request an xdisk allocation at any time through the user portal. Under the Storage tab, select Manage XDISK
This will open a web form where you can enter your size and duration requirements. The maximum size that can be requested is 20000GB and the maximum duration is 300 days. If a PI has created multiple research groups, you can specify the desired group ownership for the allocation from the Group dropdown menu. Once you click Ok, your allocation should immediately be available.
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title-old | Modifying an xdisk Allocation |
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id | modify |
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label | Modifying an Allocation |
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title | Modifying an Allocation |
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| PIs or delegates may manage their xdisk allocation at any time through the user portal. Under the Storage tab, select Manage XDISK
This will open a form which will allow you to modify the size and duration of your xdisk. Xdisk allocations cannot be increased beyond 20000GB and the maximum duration of 300 days. Note: the Group field may only be modified at the time of the allocation's creation.
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title-old | Deleting an xdisk Allocation |
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id | delete |
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label | Deleting an Allocation |
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title | Deleting an Allocation |
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| PIs or delegates may delete their xdisk allocation at any time through the user portal. Under the Storage tab, select Delete XDISK.
Clicking this link will open a window with a prompt. Type confirm and then select Delete XDISK to complete the process.
If you would like to request a new xdisk, you may do so as soon as the request is processed. Note: sometimes processing the request can take a few minutes, depending on the number of files and the size of the allocation. |
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The xdisk CLI commands are usable by PIs only. Group delegates can manage allocations via the user portal. |
xdisk is a locally written utility for PI's to create, delete, resize, and expire (renew) xdisk allocations.
Xdisk Function | Information | Command | Examples |
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Display xdisk help | Commands given in brackets are optional. If left blank, you will get system defaults. |
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language | bash |
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theme | Midnight |
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| $ xdisk -c help |
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language | bash |
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theme | Midnight |
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| $ xdisk -c help
/usr/bin/xdisk -c [query|create|delete|expire|size] [-d days] [-m size] |
| View current information | Check current allocation size, location, and expiration date. |
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language | bash |
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theme | Midnight |
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| $ xdisk -c query |
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language | bash |
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theme | Midnight |
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| $ xdisk -c query
XDISK on host: ericidle.hpc.arizona.edu
Current xdisk allocation for <netid>:
Disk location: /xdisk/<netid>
Allocated size: 200GB
Creation date: 3/10/2020 Expiration date: 6/8/2020
Max days: 45 Max size: 1000GB |
| Create an xdisk | Grants an xdisk allocation. Max Size: 20000 GB Max Days: 300 |
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language | bash |
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theme | Midnight |
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| $ xdisk -c create -m [size in gb] -d [days] |
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language | bash |
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theme | Midnight |
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| $ xdisk -c create -m 300 -d 30
Your create request of 300 GB for 30 days was successful.
Your space is in /xdisk/<netid> |
| Extend the xdisk time | Prior to its expiration, if your xdisk's time is under the 300 days, you may increase it until the 300 day limit is reached. |
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language | bash |
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theme | Midnight |
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| $ xdisk -c expire -d [days] |
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language | bash |
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theme | Midnight |
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| $ xdisk -c expire -d 15
Your extension of 15 days was successfully processed |
| Resize an xdisk allocation | You may resize your allocation by specifying the increase/decrease in gb. To reduce the size, use a negative sign, "- " |
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language | bash |
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theme | Midnight |
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| $ xdisk -c size -m [size in gb] |
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language | bash |
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theme | Midnight |
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| $ # Assuming an initial xdisk allocation size of 200 gb
$ xdisk -c size -m 200
XDISK on host: ericidle.hpc.arizona.edu
Your resize to 400GB was successful
$ xdisk -c size -m -100
XDISK on host: ericidle.hpc.arizona.edu
Your resize to 300GB was successful |
| Delete an xdisk allocation | Permanently deletes your current xdisk allocation. Be sure to remove any important data before deleting. |
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language | bash |
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theme | Midnight |
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| $ xdisk -c delete |
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language | bash |
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theme | Midnight |
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| $ xdisk -c delete
Your delete request has been processed |
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