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3.4
Reliability
• 1,600,000 hour MTBF (Annualized Failure Rate (AFR) of 0.55%)
• Incorporates industry-standard Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)
• 5-year warranty
3.5
Formatted capacities
Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and
must be one of the supported sizes listed in the table below.
Seagate designs specify capacity points at certain block sizes that Seagate guarantees current and future
products will meet. We recommend customers use this capacity in their project planning, as it ensures a stable
operating point with backward and forward compatibility from generation to generation. The current guaranteed
operating points for this product are:
Capacity (Blocks)
ST3450856SS
Sector Size
Decimal
512 879,097,968
520 860,480,771
528 836,812,167
3.6
Programmable drive capacity
Using the Mode Select command, the drive can change its capacity to something less than maximum. See the
Mode Select (6) parameter list table in the SAS Interface Manual, part number 100293071. A value of zero in
the Number of Blocks field indicates that the drive will not change the capacity it is currently formatted to have.
A number other than zero and less than the maximum number of LBAs in the Number of Blocks field changes
the total drive capacity to the value in the Number of Blocks field. A value greater than the maximum number of
LBAs is rounded down to the maximum capacity.
3.7
Factory-installed accessories
OEM standard drives are shipped with the Cheetah 15K.6 SAS Installation Guide, part number 100384785,
and the Safety and Regulatory Agency Specifications, part number 75789512 (unless otherwise specified).
3.8
Options (factory installed)
You may order the following items which are incorporated at the manufacturing facility during production or
packaged before shipping. Some of the options available are (not an exhaustive list of possible options):
• Other capacities can be ordered depending on sparing scheme and sector size requested.
• Single-unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection
against transit damage. Units shipped individually require additional protection as provided by the single unit
shipping pack. Users planning single unit distribution should specify this option.
• The Safety and Regulatory Agency Specifications, part number 75789512, may be included with each stan-
dard OEM drive shipped.
Cheetah 15K.6 SAS Product Manual, Rev. A
ST3300656SS
Hex
Decimal
3465F870
585,937,500
3349E503
573,653,848
31E0BD87
557,874,778
ST3146356SS
Hex
Decimal
22ECB25C
286,749,488
22314358
280,790,185
21407E5A
272,662,935
Hex
11177330
10BC84A9
10408197
9
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