Seagate ST200FM0002 Pulsar.2 SAS Product Manual - Page 16

4.5 Formatted capacities Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and must be a multiple of 4 bytes. Users having the necessary equipment may modify the data block size before issuing a FORMAT UNIT command and obtain different formatted capacities than those listed. To provide a stable target capacity environment and at the same time provide users with flexibility if they choose, Seagate recommends product planning in one of two modes: 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 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 shown below. The Capacity stated is identical when the drive is formatted with or without PI enabled. Table 1: Formatted Capacity LBA Count Capacity (LBAs) LBA Size 512 520 524 528 4096 4160 4192 4224 800GB Decimal 1,562,824,368 1,529,743,600 1,509,354,136 1,487,666,080 195,353,046 192,307,693 190,839,695 189,393,940 400GB Hex Decimal 781,422,768 764,871,800 754,677,072 743,833,040 97,677,846 96,153,847 95,419,848 94,696,970 200GB Hex Decimal 390,721,968 382,435,904 377,338,536 371,916,520 48,840,246 48,076,924 47,709,924 47,348,485 100GB Hex Decimal 195,371,568 191,217,952 188,669,272 185,958,264 24,421,446 24,038,462 23,854,962 23,674,243 Hex BA52230h B65C120h B3EDD58h B157F78h 174A446h 16ECC3Eh 16BFF72h 1693D83h 5D26CEB0h 5B2E08F0h 59F6EA98h 58ABFBA0h BA4D9D6h B7661EDh B5FFB8Fh B49EC14h 2E9390B0h 2D970478h 2CFB7550h 2C55FDD0h 5D27216h 5BB30F7h 5AFFDC8h 5A4F60Ah 1749F1B0h 16CB8240h 167DBAA8h 162AFEE8h 2E93E36h 2DD987Ch 2D7FEE4h 2D27B05h 4.6 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. 4.7 Factory-installed options OEMs 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 LBA 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, is usually included with each standard OEM drive shipped, but extra copies may be ordered. 8 Pulsar.2 SAS Product Manual, Rev. B