Preface
xi
Hitachi VSP User and Reference Guide
Convention for storage capacity values
Physical and logical storage capacities of disk drives in Hitachi Data Systems
storage products are calculated based on the following values:
Logical storage capacity values (logical device capacity) are calculated
based on the following values:
Accessing product documentation
The VSP user documentation is available on the Hitachi Data Systems
Support Portal: https://Portal.HDS.com. Check this site for the most current
documentation, including important updates that may have been made
after the release of the product.
Getting help
The Hitachi Data Systems customer support staff is available 24 hours a
day, seven days a week. If you need technical support, log on to the Hitachi
Data Systems support portal for contact information: https://
Portal.HDS.com
Comments
Please send us your comments on this document:
doc.comments@hds.com. Include the document title, number, and revision.
Please refer to specific sections and paragraphs whenever possible.
Thank you! (All comments become the property of Hitachi Data Systems.)
Logical Units: Block Size - 512 Bytes (Logical Disk Capacity)
1 KB (kilobyte) = 1,024 bytes (2
10
) 1 TB (terabyte) = 1,024
4
bytes
1 MB (megabyte) = 1,024
2
bytes 1 PB (petabyte) = 1,024
5
bytes
1 GB (gigabyte) = 1,024
3
bytes 1 EB (exabyte) = 1,024
6
bytes
Hard Disk Drives (HDDs) (Physical Disk Capacity)
1 KB = 1,000 bytes
1 TB = 1,000
4
bytes
1 MB = 1,000
2
bytes 1 PB = 1,000
5
bytes
1 GB = 1,000
3
bytes 1 EB = 1,000
6
bytes
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