wie es genau läuft weiß ich nicht. in jedem fall steht es auch im handbuch
des ex8350 drin. man sollte beim einrichten des raids größere sektoren wählen.
hier die abschrift aus dem controller bios:
logical drive id: 1
logical drive name: RAID01BOOT1
raid level: 5
stripe size: 64kb
sector size: 512 bytes
cache policy: write back
ich suche gleich die passage aus dem handbuch, wo steht, dass man auf
1024 gehen soll um 4 TB mit xp nutzen zu können.
erstmal den ollen acrobat reader installieren.
"11. RAID only. Select a Sector Size.
Choose from 512, 1024, 2048,
Choosing Sector Size
A sector is the smallest addressable area on a physical disk drive. Sector Size
refers to the size of sector measured by the number of bytes of data it can hold.
The most common sector size is 512 bytes (512 B). A smaller sector size results
in a more efficient use of a disk drive’s capacity. 512 B is the default sector size
for logical drives on SuperTrak.
The number of usable sectors is limited by the addressing method of the
computer's operating system:
•
Windows 2000 and Windows XP (32-bit) support 10-bit logical bit addressing
(LBA), so with 512 B sectors, they can only support up to 2 terabytes (TB) of
data storage capacity. To increase the capacity, you must use larger
sectors. See “2 TB Limitation” on page 132.
• Windows XP (64-bit), Windows 2003 Server, and Windows Vista support 64-
bit LBA, so they are not affected by this limitation. For these OSes, always
choose the default 512 B sector size.
Advantages Disadvantages
High Read data transaction rate
Good write data transaction rate
Very good aggregate transfer rate
Most versatile RAID level
Disk failure has a moderate impact on
throughput
Advantages Disadvantages
Easy management of multiple
independent physical drives
No increase in performance, capacity or
fault tolerance.
SuperTrak EX8300, EX8350 User Manual
132
• Linux operating systems with the 2.4 kernel do not support variable sector
sizes. For these OSes, always choose the default 512 B sector size.
• Linux operating systems with the 2.6 kernel support 64-bit LBA. For these
OSes, always choose the default 512 B sector size.
2 TB Limitation
If your Host PC runs Windows 2000 or Windows XP (32-bit), and you want to
create logical drives larger than 2TB, you must choose a sector size larger than
512 B when you create the logical drive. The table below correlates sector size
with logical drive capacity.
Choosing Stripe Block Size
The stripe block size value can be set to 32 KB, 64 KB, and 128 KB.
64 KB is the default. This selection will directly affect performance. There are two
issues to consider when selecting the stripe block size.
• Choose a stripe block size equal to or smaller than the smallest cache buffer
found on any physical drive in your logical drive. A larger value slows the
logical drive down because physical drives with smaller cache buffers need
more time for multiple accesses to fill their buffers.
• If your data retrieval consists of fixed-size data blocks, such as some
database and video applications, choose that data block size as your stripe
block size.
Generally speaking, email, POS, and webservers prefer smaller stripe block
sizes. Video and database applications prefer larger stripe block sizes.
Gigabyte Boundary
The Gigabyte Boundary feature is designed for logical drives in which a drive has
failed and the user cannot replace the drive with the same capacity or larger.
Instead, the Gigabyte Boundary feature permits the installation of a replacement
drive that is slightly smaller (within 1 gigabyte) than the remaining working drive
(for example, an 80.5GB drive would be rounded down to 80GB). This can be
Logical Drive Size Sector Size
8 to 16 TB 4096 bytes (4 KB)
4 to 8 TB 2048 bytes (2 KB)
2 to 4 TB 1024 bytes (1 KB)
0 to 2 TB 512 bytes (512 B)
"
=======
aus diesem handbuch bezog ich mein wissen. und wenn mein englisch mich nicht täuscht,
habe ich doch genau das wiedergegeben, was im rot markierten bereich beschrieben wird.
dann bitte korrigiere mich an der stelle, wo ich etwas falsches wiedergegeben habe.
werde mein englisch dann entsprechend erweitern
Hinzugefügter Post:
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Die minimal logisch ansprechbare Einheit sind Blöcke und nicht Sektoren. (Deswegen heißt es auch LBA48 und nicht LSA48)
->Choosing Sector Size
->A sector is the smallest addressable area on a physical disk drive.
jetzt sag mir ob ich kein englisch kann, oder ob das handbuch lügt?
sector dürfte doch auf deutsch sektor heißen?
und LBA heißt: logical bit addressing, (deshalb auch nicht LSA48...
also garnix mit blocks. mit den bits werden die sektoren angefahren.
(wenn ich das richtig verstanden habe.aber ich lasse mich korrigieren)
((sektorgröße bytes) x (sektoren bits^2))=max adressierbare größe
habe die hdd's jetzt einfach an den anderen adapter gehängt (00-04 -00-07) und jetzt geht es...
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