HP StorageWorks XP12000 사용자 설명서 - 페이지 15

{카테고리_이름} HP StorageWorks XP12000에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. HP StorageWorks XP12000 30 페이지. Cache lun xp
HP StorageWorks XP12000에 대해서도 마찬가지입니다: 릴리스 노트 (13 페이지), 관리자 매뉴얼 (50 페이지), 구성 매뉴얼 (42 페이지), 구성 매뉴얼 (40 페이지), 구성 매뉴얼 (40 페이지), 구성 매뉴얼 (36 페이지), 구성 매뉴얼 (36 페이지), 구성 매뉴얼 (30 페이지), 구성 매뉴얼 (36 페이지), 릴리스 노트 (5 페이지), 시스템 구성 매뉴얼 (49 페이지), 시스템 구성 매뉴얼 (43 페이지), 시스템 구성 매뉴얼 (42 페이지), 시스템 구성 매뉴얼 (35 페이지), 구성 매뉴얼 (46 페이지), 구성 매뉴얼 (46 페이지), 구성 매뉴얼 (40 페이지), 구성 매뉴얼 (44 페이지), 구성 매뉴얼 (38 페이지), 구성 매뉴얼 (34 페이지), 구성 매뉴얼 (30 페이지), 구성 매뉴얼 (30 페이지), 구성 매뉴얼 (42 페이지), 구성 매뉴얼 (50 페이지)

페이지 인쇄

NOTE:

If a RAID-5 or RAID-6 volume area is changed from priority mode to bind mode and no cache is

added, only 33 percent of the user data fits into the area previously assigned for priority mode. The

remaining 67 percent is used to save read/write data. If a RAID-1 volume area is changed from priority

mode to bind mode and no cache is added, only 50 percent of the user data fits in the area previously

assigned for priority mode. The remaining 50 percent is used to save read/write data. Changing the

mode without cache extension requires Cache LUN XP reconfiguration.

Mainframe systems

To calculate the cache size for mainframe systems:

Calculate the converted values of the starting and ending addresses.

For specified LDEVs:

Setting value of ending address (CC) = (↓( (LDEV size × 15) - 1) ÷ 15↓)

Round down the calculated value between the two down arrows (↓) after the decimal point

Setting value of ending address (CC) is the value that is input to the operations box in the Cache

LUN pane)

Setting value of ending address (HH) = ( (LDEV size × 15) - 1) Mod15

Remainder is the setting value of ending address (HH)

Setting value of ending address (HH) is the value entered in the operations box on the Cache

LUN pane

Converted value of starting address = 0

Converted value of ending address = Setting value of ending address (CC) × 15 + Setting value of

ending address (HH)

Setting value of ending address (CC) and Setting value of ending address (HH) are the values

entered in the operations box on the Cache LUN pane

For specified volumes:

Converted value of starting address = Setting value of starting address (CC) × 15 + Setting value of

starting address (HH)

Setting value of ending address (CC) and Setting value of ending address (HH) are the values

entered in the operations box on the Cache LUN pane

Converted value of ending address = Setting value of ending address (CC) × 15 + Setting value of

ending address (HH)

Setting value of ending address (CC) and Setting value of ending address (HH) are the values

entered in the operations box on the Cache LUN pane

Calculate the number of addresses between the starting and ending addresses calculated in

Number of addresses = Converted value of ending address - Converted value of starting

address +1

Calculate the number of addresses of cache used by the user data

Calculate the required cache size according to the operation modes, or RAID levels, to use Cache

LUN XP.

a. Bind mode

RAID-1:

Required cache size = (Number of addresses × ( (128 × (512 + 16) ) × 2) ÷ 1,024

Units are KB

RAID types other than RAID-1:

Required cache size = (Number of addresses × (128 × (512 + 16) ) × 3) ÷ 1,024

Units are KB

Cache LUN XP user guide for the XP10000/XP12000

step