32 Getting started
About size representations
In SMU panels, parameters such as names of users and volumes have a maximum length in bytes. ASCII
characters are 1 byte; most Latin (Western European) characters with diacritics are 2 bytes; most Asian
characters are 3 bytes.
Operating systems usually show volume size in base 2. Disk drives usually show size in base 10. Memory
(RAM and ROM) size is always shown in base 2. In SMU, the base for entry and display of storage-space
sizes can be set per user or per session. When entering storage-space sizes only, either base-2 or base-10
units can be specified.
The locale setting determines the character used for the decimal (radix) point, as shown below.
Related topics
• About user accounts on page 20
Table 6 Vdisk expansion by RAID level
RAID level Expansion capability Maximum disks
NRAID Cannot expand. 1
0, 3, 5, 6 You can add 1–4 disks at a time. 16
1 Cannot expand. 2
10 You can add 2 or 4 disks at a time. 16
50 You can add one sub-vdisk at a time. The added sub-vdisk must contain the same
number of disks as each of the existing sub-vdisks.
32
Table 7 Size representations in base 2 and base 10
Base 2 Base 10
Unit Size in bytes Unit Size in bytes
KiB (kibibyte) 1,024 KB (kilobyte) 1,000
MiB (mebibyte) 1,024
2
MB (megabyte) 1,000
2
GiB (gibibyte) 1,024
3
GB (gigabyte) 1,000
3
TiB (tebibyte) 1,024
4
TB (terabyte) 1,000
4
PiB (pebibyte) 1,024
5
PB (petabyte) 1,000
5
EiB (exbibyte) 1,024
6
EB (exabyte) 1,000
6
Table 8 Decimal (radix) point character by locale
Language Character Examples
English, Chinese, Japanese, Korean Period (.) 146.81 GB
3.0 Gb/s
Dutch, French, German, Italian, Spanish Comma (,) 146,81 GB
3,0 Gb/s
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