Help *hyperDISK

> HyperDisk provides disk information, mainly on space usage, including a bar graph indicating used and free space. The graph normally represents used space with the colour green. For example, 37% would be represented:

> Should usage extend to or beyond 85% the colour becomes red, indicating the disk is overfull. For example, 89% would be represented:

> Below the usage graph is a table. This table contains data on space utilization in blocks and Mbytes, error count, etc. For volume sets the data for each member device is listed.

> Here is an example showing this server's system disk, or enter a device name of your choice here:

Usage

> The HyperDisk facility is used by simply specifying the path `/cgi-bin/hdisk`, adding any required disk to the path. For example, `/cgi-bin/hdisk/sys$sysdevice`. To specify more than one disk to be reported on at the same time separate them using colons, commas, or forward-slashes. For example `/cgi-bin/hdisk/sys$sysdevice:user$disk:applications$disk` or `/cgi-bin/hdisk/sys$sysdevice/user$disk/applications$disk`.

> Of course, the link does not have to be embedded in an HTML document. Simply click on the Location or URL text box of your browser and enter the path as above. Bookmark any disks of particular interest.

> As shown above, HyperDisk can also be used from a forms interface. The following HTML provides the example selection list shown here:

>       <FORM ACTION="/cgi-bin/hdisk">
>       <SELECT NAME=disk>
>       <OPTION SELECTED>SYS$SYSDEVICE
>       <OPTION>DKA0
>       <OPTION>DKA100
>       <OPTION>DUA0
>       <OPTION>DUA1
>       </SELECT>
>       </FORM>
>       <INPUT TYPE=submit VALUE="list disk">

> HyperDisk can also be used to embed the bar-graph representing disk space usage in any HTML document, using an IMG tag similar to the following example:

> [more]

>       <P><IMG SRC="/cgi-bin/hdisk/sys$sysdevice?graphiconly" ALIGN=middle ALT="[graph]">
>       [<A HREF="/cgi-bin/hdisk/sys$sysdevsk/?furtherinfo">more</A>]

Notes

> 1. Digital advises that FILES11 disks (the VMS file system) become significantly less efficient when exceeding 85% capacity. This is due to file and free-space fragmentation. It is not recommended to exceed this level of usage.

hyperDisk v1.3.0; October 1998